158. On the Creation of Thermal Equations of State for Use in Dioptas
J.D. McHardy, C.V. Storm, M.J. Duff, S.G. Macleod, and M.I. McMahon
High Pressure Research (2023)
157. Experimental Observation of Open Structures in Elemental Magnesium at Terapascal Pressures
M.G. Gorman et al
Nature Physics 18, 1307 (2022).
156. High-pressure Structure of Praseodymium Revisited: In Search of a Uniform Structural Phase Sequence for the Lanthanide Elements
S.E. Finnegan, M.G. Stevenson, E.J. Pace, C.V. Storm, J.D. McHardy, M.I. McMahon, S.G. MacLeod, E. Plekhanov, N. Bonini, and C. Weber
Phys. Rev. B 105, 174104 (2022).
155. Structural Complexity in Ramp-Compressed Sodium to 480 GPa
D.N. Polsin, A. Lazicki, X. Gong, S.J. Burns, F. Coppari, L.E. Hansen, B.J. Henderson, M.F. Huff, M.I. McMahon, M. Millot, R. Paul, R.F. Smith, J.H. Eggert, G.W. Collins and J.R. Rygg
Nature Communications 13, 2534 (2022).
154. Nonexistence of the s-f volume-collapse transition in solid gadolinium at pressure
Q. Li, H. Ehteshami, K. Munro, M. Marqués, M.I. McMahon, S.G. MacLeod, and G.J. Ackland
Phys. Rev. B 104, 144108 (2021).
153. Behavior of rubidium at over eightfold static compression
C. Storm, J.D. McHardy, S.E. Finnegan, E.J. Pace, M.G. Stevenson, M.J. Duff, S.G. MacLeod and M.I. McMahon
Phys. Rev. B 103, 224103 (2021).
152. X-ray free electron laser heating of water and gold at high static pressure
R.J. Husband et al
Nature Communications Materials 2, 61 (2021).
151. Novel Experimental Setup for Megahertz X-ray Diffraction in a Diamond Anvil Cell at the High Energy Density (HED) Instrument of the European X-ray Free-Electron Laser (EuXFEL)
H.P. Liermann et al
J. Synchrotron Rad. 28, 688 (2021).
150. High-Pressure Structural Systematics in Neodymium to 302 GPa
S.E. Finnegan, C.V. Storm, E.J. Pace, M.I. McMahon, S.G. MacLeod, E. Plekhanov, N. Bonini, and C. Weber
Phys. Rev. B 103, 134117 (2021).
149. Pressure-induced bcc-rhombohedral Phase Transition in Vanadium Metal
M.G. Stevenson, E.J. Pace, C.V. Storm, S.E. Finnegan, G. Garbarino, C.W. Wilson, D. McGonegle, S.G. MacLeod, and M.I. McMahon
Phys. Rev. B 103, 134103 (2021).
148. Probing Extreme States of Matter using Ultra-Intense X-ray Radiation
M.I. McMahon,
J. Phys.: Condens. Matter 34, 043001 (2022).
147. X‑ray Free Electron Laser-Induced Synthesis of ε‑Iron Nitride at High Pressures
H. Hwang et al
J. Phys. Chem. Lett. 12, 3246 (2021).
146. The Phase Diagram of Ti-6Al-4V at High-Pressures and High-Temperature
S.G. MacLeod, D. Errandonea, G.A. Cox, H. Cynn, D. Daisenberger, S.E. Finnegan, M.I. McMahon, K.A. Munro, C. Popescu and C.V. Storm
J. Phys.: Condens. Matter 33, 154001 (2021)
145. Structural Phase Transitions in Yttrium up to 183 GPa
E.J. Pace , S.E. Finnegan, C.V. Storm , M. Stevenson, M.I. McMahon, S.G. MacLeod, E. Plekhanov , N. Bonini, and C. Weber
Phys. Rev. B 102, 094104 (2020).
144. Experimental and Theoretical Confirmation of an Orthorhombic Phase Transition in Niobium at High Pressure and Temperature
D. Errandonea, L. Burakovsky, D.L. Preston, S.G. MacLeod, D. Santamaría-Perez, S. Chen, H. Cynn, S.I. Simak, M.I. McMahon, J.E. Proctor, M. Mezouar
Nature Communications Materials 1, Article number: 60 (2020).
143. High-Pressure Structural Systematics in Samarium up to 222 GPa
S.E. Finnegan, E.J. Pace , C.V. Storm, M. I. McMahon, S.G. MacLeod, H.-P. Liermann and K. Glazyrin
Phys. Rev. B 101, 174109 (2020).
142. Thermo-mechanical Response of Thickly Tamped Targets and Diamond Anvil Cells under Pulsed Hard X-ray irradiation
J. Meza-Galvez, N. Gomez-Perez, A.S. Marshall, A.L. Coleman, K. Appel, H.P. Liermann, M.I. McMahon, Z. Konôpková, and R.S. McWilliams
Journal of Applied Physics 127, 195902 (2020).
141. The High-pressure, High-temperature Phase Diagram of Cerium
K.A. Munro, D. Daisenberger, S.G. MacLeod, S. McGuire, I. Loa, C. Popescu, P. Botella, D. Errandonea and M.I. McMahon
J. Phys.: Condens. Matter 32, 335401 (2020).
140. Intense Reactivity in Sulfur–Hydrogen Mixtures at High Pressure under X-ray Irradiation
E.J. Pace, A.L. Coleman, R.J. Husband, H. Hwang, J. Choi, T. Kim, G. Hwang, S.H. Chun, D. Nam, S. Kim, O.B. Ball, H.P. Liermann, M.I.McMahon, Y. Lee, R.S. McWilliams
J. Phys. Chem. Lett. 11, 1828–1834 (2020).
139. Coordination Changes in Liquid Tin Under Shock Compression Determined Using In Situ Femtosecond X-ray Diffraction
R. Briggs, M.G. Gorman, S. Zhang, D. McGonegle, A.L. Coleman, F. Coppari, M.A. Morales-Silva, R.F. Smith, J.K. Wicks, C.A. Bolme, A.E. Gleason, E. Cunningham, H.J. Lee, B. Nagler, M.I. McMahon, J.H. Eggert, and D.E. Fratanduono
Appl. Phys. Lett. 115, 264101 (2019).
138. Structure and Magnetism of Collapsed Lanthanide Elements
M.I. McMahon, S. Finnegan, R.J. Husband, K.A. Munro, E. Plekhanov, N. Bonini, C. Weber, M. Hanfland, U. Schwarz, and S. G. Macleod
Phys. Rev. B 100, 024107 (2019).
137. Identification of Phase Transitions and Metastability in Dynamically Compressed Antimony Using Ultrafast X-Ray Diffraction
A.L. Coleman, M.G. Gorman, R. Briggs, R.S. McWilliams, D. McGonegle, C.A. Bolme, A.E. Gleason, D.E. Fratanduono, R.F. Smith, E. Galtier, H.J. Lee, B. Nagler, E. Granados, G.W. Collins, J.H. Eggert, J.S. Wark, and M.I. McMahon
Phys. Rev. Lett. 122, 255704 (2019).
136. Recovery of Metastable Dense Bi Synthesized by Shock Compression
M.G. Gorman, A.L. Coleman, R. Briggs, R.S. McWilliams, A. Hermann, D. McGonegle, C.A. Bolme, A.E. Gleason, E. Galtier, H.J. Lee, E. Granados, E.E. McBride, S. Rothman, D.E. Fratanduono, R.F. Smith, G.W. Collins, J.H. Eggert, J.S. Wark, and M.I. McMahon
Appl. Phys. Lett. 114, 120601 (2019).
135. Distortions in the Cubic Primitive High-pressure Phases of Calcium
U. Schwarz, D. Kasinathan, C. Bergner, J. Hunger, K. Meier-Kircher, L. Akselrud, M. Hanfland, M. Mezouar, K. Glazyrin, G.W. Stinton, R. Husband, H. Rosner and M.I. McMahon
J. Phys.: Condens. Matter 31 065401 (2019).
134. Femtosecond Diffraction Studies of Solid and Liquid Phase Changes in Shock-Compressed Bismuth
M.G. Gorman, A.L. Coleman, R. Briggs, R.S. McWilliams, D. McGonegle, C.A. Bolme, A.E. Gleason, E. Galtier, H.J. Lee, E. Granados, M. Śliwa, C. Sanloup, S. Rothman, D.E. Fratanduono, R.F. Smith, G.W. Collins, J.H. Eggert, J.S. Wark & M.I. McMahon
Scientific Reports 8, Article number: 16927 (2018).
133. Diamond Sculpting Pushes Extremes
M.I. McMahon
Nature Materials 17, 858 (2018).
132. Phase Diagram of Calcium at High Pressure and High Temperature
S. Anzellini, D. Errandonea, S.G. MacLeod, P. Botella, D. Daisenberger, J.M. De’Ath, J. Gonzalez-Platas, J. Ibáñez, M.I. McMahon, K.A. Munro, C. Popescu, J. Ruiz-Fuertes, and C.W. Wilson
Phys. Rev. Mat. 2, 083608 (2018).
131. High-Pressure/High-Temperature Phase Diagram of Zinc
D. Errandonea, S.G. MacLeod, J. Ruiz-Fuertes, L. Burakovsky, M.I. McMahon, C.W. Wilson, J. Ibañez, D. Daisenberger and C. Popescu
J. Phys. Cond. Matt. 30, 295402 (2018).
130. Phase Diagram of Antimony up to 31 GPa and 835 K
A.L. Coleman, M. Stevenson, M.I. McMahon, and S.G. Macleod
Phys. Rev. B 97, 144107 (2018).
129. Implementation of Hydrodynamic Simulation Code in Shock Experiment Design for Alkali Metals
A.L. Coleman, R. Briggs, M.G. Gorman, S. Ali, A. Lazicki, D.C. Swift, P.G. Stubley, E.E. McBride, G. Collins, J.S. Wark and M.I. McMahon
IOP Conf. Series: Journal of Physics: Conf. Series 950, 042037 (2017).
128. Phase transitions in shock compressed bismuth identified using single photon energy dispersive X-ray diffraction (SPEDX)
R. Briggs, M.J. Suggit, M.G. Gorman, A. Coleman, R. Heathcote, A. Higginbotham, S. Patel, J.S. Wark and M.I. McMahon
IOP Conf. Series: Journal of Physics: Conf. Series 950, 042038 (2017)
127. Ultrafast X-Ray Diffraction Studies of the Phase Transitions and Equation of State of Scandium Shock Compressed to 82 GPa
R. Briggs, M.G. Gorman, A.L. Coleman, R.S. McWilliams, E.E. McBride, D. McGonegle, L. Peacock, S. Rothman, S.G. Macleod, C.A. Bolme, A.E. Gleason, G.W. Collins, J.H. Eggert, D.E. Fratanduono, R.F. Smith, E. Galtier, E. Granados, H.J. Lee, B. Nagler, I. Nam, Z. Xing, J.S. Wark, and M.I. McMahon
Phys. Rev. Lett. 118, 025501 (2017).
126. Thallium Under Extreme Compression
C. Cazorla, S.G. MacLeod, D. Errandonea, K.A. Munro, M.I. McMahon and C. Popescu
J. Phys.: Condens. Matter 28, 445401 (2016).
125. Pressure Dependence of the Structure and Electronic Properties of Sr3Ir2O7
C. Donnerer, Z. Feng, J. G. Vale, S. N. Andreev, I. V. Solovyev, E. C. Hunter, M. Hanfland, R. S. Perry, H. M. Rønnow, M. I. McMahon, V. V. Mazurenko, and D. F. McMorrow
Phys. Rev. B 93, 174118 (2016).
124. Direct Observation of Melting in Shock-Compressed Bismuth With Femtosecond X-ray Diffraction
M.G. Gorman, R. Briggs, E.E. McBride, A. Higginbotham, B. Arnold, J. H. Eggert, D. E. Fratanduono, E. Galtier, A.E. Lazicki, H. J. Lee, H. P. Liermann, B. Nagler, A. Rothkirch, R.F. Smith, D.C. Swift, G.W. Collins, J.S. Wark, and M.I. McMahon
Phys. Rev. Lett. 115, 095701 (2015).
123. One-Dimensional Chain Melting in Incommensurate Potassium
E.E. McBride, K.A. Munro, G.W. Stinton, R.J. Husband, R. Briggs, H.-P. Liermann, and M.I. McMahon
Phys. Rev. B 91, 144111 (2015).
122. Diamonds on Diamond: Structural Studies at Extreme Conditions on the Diamond Light Source
M.I. McMahon
Philosophical Transactions A 373, 20130158 (2015).
121. The Crystal Structure of Methane B at 8 GPa — An α-Mn Arrangement of Molecules
H.E. Maynard-Casely, L.F. Lundegaard, I. Loa, M.I. McMahon, E. Gregoryanz, R.J. Nelmes and J.S. Loveday
J. Chem. Phys. 141, 234313 (2014).
120. Incommensurate-to-Incommensurate Phase Transition in Eu Metal at High Pressures
R. J. Husband, I. Loa, K. A. Munro, E. E. McBride, S. R. Evans, H.-P. Liermann, and M. I. McMahon
Phys. Rev. B 90, 214105 (2014).
119. In Situ Synchrotron X-ray Diffraction in the Laser-Heated Diamond Anvil Cell: Melting Phenomena and Synthesis of New Materials
A. Salamat, R.A. Fischer, R. Briggs, M.I. McMahon, and S. Petitgirard
Coordination Chemistry Reviews, 277–278, 15-30 (2014).
118.Equation of State and High-Pressure/High-Temperature Phase Diagram of Magnesium
G.W. Stinton, S.G. MacLeod, H. Cynn, D. Errandonea, W.J. Evans, J.E. Proctor, Y. Meng, and M.I. McMahon
Phys. Rev. B 90, 134105 (2014).
117. High-Pressure X-ray Science on the Ultimate Storage Ring
M.I. McMahon
J. Synchrotron Rad. 21, 1077-1083 (2014).
116. Investigations into Rapid Uniaxial Compression of Polycrystalline Targets Using Femtosecond X-ray Diffraction
D. McGonegle, A. Higginbotham, E. Galtier, E.E. McBride, M.I. McMahon, D. Milathianaki, H.J. Lee, B. Nagler, S.M. Vinko & J.S. Wark
Journal of Physics: Conference Series 500 112063 (2014).
115. The Distorted-fcc Phase of Samarium
R.J. Husband, I. Loa, K. Munro & M.I. McMahon
Journal of Physics: Conference Series 500, 032009 (2014).
114. Determining Complex Crystal Structures from High Pressure Single-Crystal Diffraction Data Collected on Synchrotron Sources
M.I. McMahon, I. Loa, G.W. Stinton & L.F. Lundegaard
High Pressure Research 33, 485-500 (2013)
113. Observation of a Reentrant Phase Transition in Incommensurate Potassium
L.F. Lundegaard, G.W. Stinton, M. Zelazny, C.L. Guillaume, J.E. Proctor, I. Loa, E. Gregoryanz, R.J. Nelmes, & M.I. McMahon
Phys. Rev. B 88, 054106 (2013).
112. Phase Transitions in Europium at High Pressures
R.J. Husband, I. Loa, G.W. Stinton, G.J. Ackland & M.I. McMahon
High Pressure Research 33, 158-164 (2013).
111. High-Pressure, High-Temperature Single-Crystal Study of Bi-IV
W. Chaimayo, L.F. Lundegaard, I. Loa, G.W. Stinton, A.R. Lennie and M.I. McMahon
High Pressure Research 32, 442–449 (2012).
110. Europium-IV: An Incommensurately Modulated Crystal Structure in the Lanthanides
R.J. Husband, I. Loa, G.W. Stinton, S.R. Evans, G.J. Ackland, and M.I. McMahon
Phys. Rev. Lett. 109, 095503 (2012).
109. The Structure of Eu-III
R.J. Husband, I. Loa, G.W. Stinton, S.R. Evans, G.J. Ackland and M.I. McMahon
Journal of Physics: Conference Series 377, 012030 (2012).
108. Melting of Potassium to 22 GPa
E.E. McBride, O. Narygina, G.W. Stinton and M.I. McMahon
Journal of Physics: Conference Series 377, 012040 (2012).
107. Extraordinarily Complex Crystal Structure with Mesoscopic Patterning in Barium at High Pressure
I. Loa, R.J. Nelmes, L.F. Lundegaard and M.I. McMahon
Nature Materials 11, 627 (2012).
106. Experimental and Theoretical Study of Ti-6Al-4V to 220 GPa
S.G. MacLeod, B.E. Tegner, H. Cynn, W.J. Evans, J.E. Proctor, M.I. McMahon, and G.J. Ackland
Phys. Rev. B 85, 224202 (2012).
105. Lattice Dynamics and Superconductivity in Cerium at High Pressure
I. Loa, E.I. Isaev, M.I. McMahon, D.Y. Kim, B. Johansson, A. Bosak, and M. Krisch
Phys. Rev. Lett. 108, 045502 (2012).
104. High-Pressure Crystallography
M.I. McMahon
Topics Curr. Chem. 315, 69–110 (2012).
103. Melting Curve of Potassium to 22 GPa
O. Narygina, E.E. McBride, G.W. Stinton and M.I. McMahon
Phys Rev B 84, Art. No. 054111 (2011).
102. Cold Melting and Solid Structures of Dense Lithium
C.L. Guillaume, E. Gregoryanz, O. Degtyareva, M.I. McMahon, M. Hanfland, S. Evans, M. Guthrie, S.V. Sinogeikin, and H.K.Mao
Nature Physics 7, 211 (2011).
101. Crystal Structures of Dense Lithium: A Metal-Semiconductor-Metal Transition
M. Marques, M.I. McMahon, E. Gregoryanz, M. Hanfland, C.L. Guillaume, C.J. Pickard, G.J. Ackland, and R.J. Nelmes
Phys. Rev. Lett. 106, Art. No: 095502 (2011).
100. The Distorted Close-Packed Crystal Structure of Methane A
H.E. Maynard-Casely, C.L. Bull, M. Guthrie, I. Loa, M.I. McMahon, E. Gregoryanz, R. J. Nelmes, and J.S. Loveday
J. Chem Phys. 133, Art. No: 064504 (2010).
99. Phase Transitions in Praseodymium up to 23 GPa: An X-ray Powder Diffraction Study
S.R. Evans, I. Loa, L.F. Lundegaard and M.I. McMahon
Phys. Rev. B 80, Art. No. 134105 (2009).
98. Potassium under Pressure: A Pseudobinary Ionic Compound
M. Marques, G.J. Ackland, L.F. Lundegaard, G. Stinton, R.J. Nelmes, M.I. McMahon, and J. Contreras-Garcia
Phys. Rev. Lett. 103, Art. No. 15501 (2009).
97. The Crystal Structures of δ and δ* Nitrogen
G.W. Stinton, I. Loa, L.F. Lundegaard, and M.I. McMahon
J. Chem. Phys. 131, 104511 (2009).
96. Observation of the oP8 Crystal Structure in Potassium at High Pressure
L.F. Lundegaard, M. Marques, G. Stinton, G.J. Ackland, R.J. Nelmes, and M.I. McMahon
Phys. Rev. B 80, Art. No. 020101 (2009).
95. On the Structure of High-Pressure High-Temperature η-O2
L.F. Lundegaard , C. Guillaume, M.I. McMahon, E. Gregoryanz and M. Merlini
J. Chem. Phys. 130, 164516 (2009).
94. Single-crystal Studies of Incommensurate Na to 1.5 Mbar
L.F. Lundegaard, E. Gregoryanz, M.I. McMahon, C. Guillaume, I. Loa, and R.J. Nelmes
Phys. Rev. B 79, Art. No. 064105 (2009).
93. Origin of the Incommensurate Modulation in Te-III and Fermi-Surface Nesting in a Simple Metal
I. Loa. M.I. McMahon and A. Bosak
Phys. Rev. Lett. 102, Art. No. 035501 (2009).
92. Two Million Hours of Science
G.N. Greaves, R.A. Catlow, G.E. Derbyshire, M.I. McMahon, R.J. Nelmes, and G. van der Laan
Nature Materials 7, 827 (2008).
91. Origin of Incommensurate Modulations in the High-pressure Phosphorus IV phase
M Marques, G.J. Ackland, L.F. Lundegaard, S. Falconi, C. Hejny, M.I. McMahon, J. Contreras-Garcia, and M. Hanfland
Phys. Rev. B 78, Art. No. 054120 (2008).
90. Structural Diversity of Sodium
E. Gregoryanz, L.F. Lundegaard, M.I. McMahon. C. Guillaume, R.J. Nelmes, and M. Mezouar
Science 320, 1054 (2008).
89. Structure of Sodium above 100 GPa by Single-crystal X-ray Diffraction
M.I. McMahon, E. Gregoryanz, L.F. Lundegaard, I. Loa, C. Guillaume, R.J. Nelmes, A.K. Kleppe, M. Amboage, H. Wilhelm, and A.P. Jephcoat
Proc. Nat. Acad. Sci. 104, 17297 (2007).
88. Competition of Charge-density Waves and Superconductivity in Sulfur
O. Degtyareva, M.V. Magnitskaya, J. Kohanoff, G. Profeta, S. Scandolo, M. Hanfland, M.I. McMahon, and E. Gregoryanz
Phys. Rev. Lett. 99, Art. No. 155505 (2007).
87. Lattice Dynamics of Incommensurate Composite Rb-IV and a Realization of the Monatomic Linear Chain Model
I. Loa, L.F. Lundegaard, M.I. McMahon, S.R. Evans, A. Bosak, and M. Krisch
Phys. Rev. Lett. 99, Art. No. 035501 (2007).
86. Incommensurate Modulations of Bi-III and Sb-II
M.I. McMahon, O. Degtyareva and R.J. Nelmes
Phys. Rev. B 75, Art. No. 184114 (2007).
85. Phase Transitions in Tellurium at High Pressure and Temperature
C. Hejny, S. Falconi, L.F. Lundegaard and M.I. McMahon
Phys. Rev. B 74, Art. No. 174119 (7 pages) (2006).
84. Observation of an O8 Molecular Lattice in the Epsilon Phase of Solid Oxygen
L.F. Lundegaard, G. Weck, M.I. McMahon, S. Desgreniers and P. Loubeyre
Nature, 443 201-204 (2006).
83. Composite Incommensurate K-III and a Commensurate Form
M.I. McMahon, R.J. Nelmes, U. Schwarz and K. Syassen
Phys. Rev. B 74, Art. No. 140102(R) (5 pages) (2006).
82. X-ray Diffraction Study of Diffuse Scattering in Incommensurate Rubidium-IV
S. Falconi, M.I. McMahon, L.F. Lundegaard, C. Hejny, R.J. Nelmes and M Hanfland
Phys. Rev. B 73, Art. No. 214102 (9 pages) (2006).
81. Different Incommensurate Composite Crystal Structure for Sc-II
M.I. McMahon, L.F. Lundegaard, C. Hejny, S. Falconi and R.J. Nelmes
Phys. Rev. B 73, Art. No. 134102 (4 pages) (2006).
80. Complex Monoclinic Superstructure in Sr-IV
T. Bovornratanaraks, D.R. Allan, S.A. Belmonte, M.I. McMahon and R.J. Nelmes
Phys. Rev. B 73, Art. No. 144112 (5 pages) (2006).
79. Observation of a Wurtzite form of Gallium Arsenide
M.I. McMahon and R.J. Nelmes
Phys. Rev. Lett. 95, Art. No. 215505 (4 pages) (2005).
78. Structure of the Intermediate Phase of PbTe at High Pressure
G. Rousse, S. Klotz, A.M. Saitta, J. Rodriguez-Carvajal, M.I. McMahon, B. Couzinet and M. Mezouar
Phys. Rev. B 71, Art. No. 224116 (6 pages) (2005).
77. X-ray Diffraction Study of Liquid Cs up to 9.8GPa
S. Falconi, L.F. Lundegaard, C. Hejny and M.I. McMahon
Phys. Rev. Lett. 94, Art. No. 125507 (4 pages) (2005).
76. Incommensurate Sulfur above 100GPa
C. Hejny, L.F. Lundegaard, S. Falconi, M.I. McMahon and M. Hanfland
Phys. Rev B 71, Art. No. 020101 (4 pages) (2005).
75. High-pressure Structural Studies of Group-15 Elements
O. Degtyareva, M.I. McMahon and R.J. Nelmes
High Pressure Res. 24, 319-356 (2004).
74. Pressure-Induced Incommensurate-to-Incommensurate Phase Transition in Antimony
O. Degtyareva, M.I. McMahon and R.J. Nelmes
Phys. Rev. B 70, Art. No. 184119 (5 pages) (2004).
73. Structural Complexity in Gallium under High Pressure: Relation to Alkali Elements
O. Degtyareva, M.I. McMahon, D.R. Allan and R.J. Nelmes
Phys. Rev. Lett. 93, Art. No. 205502 (4 pages) (2004).
72. Complex Crystal Structures of Te-II and Se-III at High Pressure
C. Hejny and M.I. McMahon
Phys. Rev. B 70, Art. No. 184109 (5 pages) (2004).
71. Confirmation of the Incommensurate Nature of Se-IV at Pressures Below 70 GPa
M.I. McMahon, C. Hejny, J.S. Loveday, L.F. Lundegaard and M. Hanfland
Phys. Rev B 70, Art. No. 054101 (4 pages) (2004).
70. Chain “Melting” in the Composite Rb-IV Structure
M.I. McMahon and R.J. Nelmes
Phys. Rev. Lett. 93, Art. No. 055501 (4 pages) (2004).
69. Bi1-xSbx Under High Pressure: Effect of Alloying on the Incommensurate Bi-III type Composite Structure
U. Haussermann, O. Degtyareva, A.S. Mikhaylushkin, K. Soderberg, S.I. Simak, M.I. McMahon, R.J. Nelmes and R. Norrestam
Phys. Rev. B 69, Art. No. 134203 (10 pages) (2004).
68. Large Structural Modulations in Incommensurate Te-III and Se-IV
C. Hejny and M.I. McMahon
Phys. Rev. Lett. 91, Art. No. 215502 (4 pages) (2003).
67. New Results on Old Problems: The Use of Single-Crystals in High-Pressure Structural Studies
M.I. McMahon, O. Degtyareva, C. Hejny and R.J. Nelmes
High Pressure Research 23, 289-299 (2003).
66. Structure of Rb-III: Novel Modulated Stacking Structures in Alkali Metals
R.J. Nelmes, M.I. McMahon, J.S. Loveday and S. Rehki
Phys. Rev. Lett. 88, Art. No. 155503 (4 pages) (2002).
65. New High-pressure Phase of GaSb
C.B. Vanpeteghem, R.J. Nelmes, D.R. Allan and M.I. McMahon
Phys. Rev. B 65, Art. No. 012105 (3 pages) (2002).
64. Complex Crystal Structure of Cesium-III
M.I. McMahon, R.J. Nelmes and S. Rekhi
Phys. Rev. Lett. 87, Art. No. 255502 (4 pages) (2001).
63. Crystal Structure of the High Pressure Phase of Bismuth Bi-III
O. Degtyareva, M.I. McMahon and R.J. Nelmes
Mater. Sci. Forum 378-3, 469-474 (2001).
62. Pressure Dependent Incommensuration in Rb-IV
M.I. McMahon, S. Rekhi and R.J. Nelmes
Phys. Rev. Lett. 87, Art. No. 055501 (4 pages) (2001).
61. High-Pressure High-Temperature Studies of Structural Ordering in GaSb
C.B. Vanpeteghem, R.J. Nelmes, D.R. Allan, M.I. McMahon, A.V. Sapelkin and S.C. Bayliss
Phys. Stat. Sol. B 223, 405-409 (2001).
60. Ba-IV-type Incommensurate Crystal Structure in Group-V Metals
M.I. McMahon, O. Degtyareva and R.J. Nelmes
Phys. Rev. Lett. 85, 4896-4899 (2000).
59. Observation of the Incommensurate Barium-IV Structure in Strontium phase V
M.I. McMahon, T. Bovornratanaraks, D.R. Allan, S.A. Belmonte and R.J. Nelmes
Phys. Rev. B 61, 3135-3138 (2000).
58. Incommensurate Structures of Ba-IV and Sr-V
R.J. Nelmes, M.I. McMahon, D.R. Allan, S.A. Belmonte and T. Bovornratanaraks
Science and Technology of High Pressure, Proceedings of AIRAPT-17, edited by M.H. Manghnani, W.J. Nellis and M.F. Nicol, p475-478, Universities Press, Hyderabad, India (2000).
57. Self-hosting Incommensurate Structure of Barium-IV
R.J. Nelmes, D.R. Allan, M.I. McMahon and S.A. Belmonte
Phys. Rev. Lett. 83, 4081-4084 (1999).
56. A New Approach for Indexing Powder Diffraction Data Based on Whole-profile Fitting and Global Optimisation Using a Genetic Algorithm
B.M. Kariuki, S.A. Belmonte, M.I. McMahon, R.L. Johnston, K.D.M. Harris and R.J. Nelmes
Journal of Synchrotron Radiation 6, 87-92 (1999).
55. Structure of the High Pressure Phase III of Iron Sulphide
R.J. Nelmes, M.I. McMahon, S.A. Belmonte and J.B. Parise
Phys. Rev. B 59, 9048-9052 (1999).
54. Observation of a Simple Cubic Phase of GaAs with a 16 Atom Basis (SC16)
M.I. McMahon, R.J. Nelmes, D.R. Allan, S.A. Belmonte and T. Bovornratanaraks
Phys. Rev. Lett. 80, 5564-5567 (1998).
53. Structures and Transitions in Strontium
D.R. Allan, R.J. Nelmes, M.I. McMahon, S.A. Belmonte andT. Bovornratanaraks
Rev. High Pressure Sci. Technol. 7, 236-238 (1998).
52. Measuring and Modelling Preferred Orientation in High-Pressure Powder Patterns
S.A. Belmonte, R.J. Nelmes, D.R. Allan and M.I. McMahon
Rev. High Pressure Sci. Technol. 7, 298-300 (1998).
51. The High-Pressure Phases of GaAs and ZnTe
M.I. McMahon and R.J. Nelmes
Rev. High Pressure Sci. Technol. 7, 304 -306 (1998).
50. Complex Structures of Cerium
M.I. McMahon and R.J. Nelmes
Rev. High Pressure Sci. Technol. 7, 313-315 (1998).
49. Non-Existence of the Diatomic β-tin Structure
R.J. Nelmes, M.I. McMahon and S.A. Belmonte
Phys. Rev. Lett. 79, 3668-3671 (1997).
48. Observation of a Cinnabar Phase in GaAs at High Pressure
M.I. McMahon and R.J. Nelmes
Phys. Rev. Lett. 78, 3697-3700 (1997).
47. Different Results for the Equilibrium Phases of Cerium above 5GPa.
M.I. McMahon and R.J. Nelmes
Phys. Rev. Lett. 78, 3884-3887 (1997).
46. ‘Hidden’ High-to-Low Cristobalite Type Transition in HgSe and HgTe at High Pressures
M.I. McMahon, R.J. Nelmes, H. Liu and S.A. Belmonte
Phys. Rev. Lett. 77, 1781-1784 (1996).
45. Observation and Modeling of Preferred Orientation in 2-Dimensional Powder Patterns
N.G. Wright, R.J. Nelmes, S.A. Belmonte and M.I. McMahon
Journal of Synchrotron Radiation 3, 112-119 (1996).
44. Identity of InSb-II and InSb-III
R.J. Nelmes and M.I. McMahon
Phys. Rev. Lett. 77, 663-666 (1996).
43. 2-D Data-Collection in High-Pressure Powder Diffraction Studies: Application to Semiconductors
M.I. McMahon, R.J. Nelmes, H. Liu and S.A. Belmonte
High Pressure Research 14, 277-286 (1996).
42. Pressure-Dependence of the Electron-Density in Solid Iodine by Maximum-Entropy Method
H. Fujihisa, Y. Fujii, K. Takemura, O. Shimomura, R.J. Nelmes and M.I. McMahon
High Pressure Research, 14, 335-340 (1996).
41. High-Pressure Crystal-Structure of HgTe-IV
M.I. McMahon, N.G. Wright, D.R. Allan and R.J. Nelmes
Phys. Rev. B 53, 2163-2166 (1996).
40. Imma Phase of Germanium at ~80 GPa
R.J. Nelmes, H. Liu, S.A. Belmonte, J.S. Loveday, M.I. McMahon, D.R. Allan, D. Hausermann and M. Hanfland
Phys. Rev. B 53, R2907-2909 (1996).
39. New Structural Systematics in the II-VI, III-V, and Group-IV Semiconductors at High Pressure
M.I. McMahon and R.J. Nelmes
Physica Status Solidi B 198, 389-402 (1996).
38. Pressure-Dependence of the Electron Density in Solid Iodine by the Maximum-Entropy Method
H. Fujihisa, Y. Fujii, K. Takemura, O. Shimomura, R.J. Nelmes and M.I. McMahon
High Pressure Research 14, 335-340 (1996).
37. Ordered-Superstructure of InSb-IV
R.J. Nelmes and M.I. McMahon
Phys. Rev. Lett. 74, 106-109 (1995).
36. Pressure Evolution of the Cinnabar Phase of HgTe
San-Miguel, N.G. Wright, M.I. McMahon and R.J. Nelmes
Phys. Rev. B 51, 8731-8736 (1995).
35. Phase Transitions in CdTe to 28GPa
R.J. Nelmes, M.I. McMahon, N.G. Wright and D.R. Allan
Phys. Rev. B 51, 15723-15731 (1995).
Pressure Dependence of the Imma Phase of Silicon
34. M.I. McMahon, R.J. Nelmes, N.G. Wright and D.R. Allan
Phys. Rev. B 50, 739-743 (1994).
33. Structural Studies Of Tetrahedrally-Coordinated Semiconductors At High-Pressure – New Systematics
M.I. McMahon and R.J. Nelmes
J. Phys. Chem. Solids. 56, 485-490 (1995).
32. Structural Studies of III-V and Group IV Semiconductors at High Pressure
R.J. Nelmes, M.I. McMahon, N.G. Wright, D.R. Allan and J.S. Loveday
J. Phys. Chem. Solids. 56, 539-543 (1995).
31. Structural Studies of II-VI Semiconductors at High Pressure
R.J. Nelmes, M.I. McMahon, N.G. Wright and D.R. Allan
J. Phys. Chem. Solids.56, 545-549 (1995).
30. Crystal Structure of ZnTe-III
R.J. Nelmes, M.I. McMahon, N.G. Wright and D.R. Allan
Phys. Rev. Lett. 73, 1805-1808 (1994).
29. High-Pressure Powder Diffraction on Synchrotron Sources
R.J. Nelmes and M.I. McMahon
Journal of Synchrotron Radiation, 1, 69-73 (1994).
28. On the Structure of GaSb to 35GPa
M.I. McMahon, R.J. Nelmes, N.G. Wright and D.R. Allan
Phys. Rev. B 50, 13047-13050 (1994).
27. Observation of a Cinnabar Structure in CdTe
R.J. Nelmes, M.I. McMahon, N.G. Wright and D.R. Allan
Phys. Rev. B 48, 1314-1317 (1993).
26. Stability and Crystal Structure of BC8 Germanium
R.J. Nelmes, M.I. McMahon, N.G. Wright, D.R. Allan and J.S. Loveday
Phys. Rev. B 48, 9883-9886 (1993).
25. Crystal Structure of the Cinnabar Phase of HgTe
N.G. Wright, M.I. McMahon, R.J. Nelmes and A. San-Miguel
Phys. Rev. B 48, 13111-13114 (1993).
24. Phase transitions in CdTe to 5GPa
M.I. McMahon, R.J. Nelmes, N.G. Wright and D.R. Allan
Phys. Rev. B 48, 16246-16251 (1993).
23. The Phase Transitions in InSb to 5GPa
R.J. Nelmes, M.I. McMahon, P.D. Hatton, J. Crain and R.O. Piltz.
Phys. Rev. B 47, 35-54 (1993).
22. New High-Pressure Phase of Silicon
M.I. McMahon and R.J. Nelmes
Phys. Rev. B 47, 8337-8340 (1993).
21. Crystal-Structure Studies of III-V and Group IV Semiconductors using Angle-dispersive Diffraction Techniques with an Image-plate Detector
M.I. McMahon, R.J. Nelmes, N.G. Wright and D.R. Allan
Proceedings of the Joint AIRAPT/APS Topical Conference on High Pressure Science and Technology, Colorado Springs 1993, edited by S. Schmidt (American Institute of Physics, New York) p629-631.
20. Crystal-Structure Studies of II-VI Semiconductors using Angle-dispersive Diffraction Techniques with an Image-plate Detector
M.I. McMahon, R.J. Nelmes, N.G. Wright and D.R. Allan
Proceedings of the Joint AIRAPT/APS Topical Conference on High Pressure Science and Technology, Colorado Springs 1993, edited by S. Schmidt (American Institute of Physics, New York) p633-636.
19. Microstructural Aspects of Reconstructive Phase Transitions under Pressure
N.G. Wright, M.I. McMahon, and R.J. Nelmes
Proceedings of the Joint AIRAPT/APS Topical Conference on High Pressure Science and Technology, Colorado Springs 1993, edited by S. Schmidt (American Institute of Physics, New York) p449-452.
18. The Development of Synchrotron X-ray Area Detectors for Studying High-Pressure Phase Transitions
R.J. Cernik, S.M. Clark, A.M. Deacon, C.J. Hall, P. Pattison, R.J. Nelmes, P.D. Hatton and M.I. McMahon.
Phase Transitions 39, 187-198 (1992).
17. High-Pressure Neutron-Diffraction Studies of KH2PO4-Type Phase Transitions as Tc tends to 0K
R.J. Nelmes, M.I. McMahon, R.O. Piltz and N.G. Wright
Ferroelectrics 124, 355-360 (1992).
16. Neutron-Diffraction Studies of the Heavy-Atom Structure in H-Ordering Materials
M.I. McMahon, R.J. Nelmes, R.O. Piltz, W.F. Kuhs and N.G. Wright
Ferroelectrics 124, 351-354 (1992).
15. Angle-Dispersive Powder-Diffraction Techniques for Crystal Structure Refinement at High Pressures
P.D. Hatton, M.I. McMahon, R.O. Piltz, J. Crain and R.J. Nelmes.
High Pressure Research 9, 194 (1992).
14. Angle-Dispersive Powder-Diffraction Techniques for Crystal Structure Refinement at High Pressures
R.J. Nelmes, P.D. Hatton, M.I. McMahon, R.O. Piltz and J. Crain.
in ‘Recent Trends in High-Pressure Research’ ed. A.K. Singh, Oxford and IBH Publishing, p735-740 (1992).
13. An Imaging Plate System for High-Pressure Powder Diffraction: The Data Processing Side
R.O. Piltz, M.I. McMahon, J. Crain, P.D. Hatton, R.J. Nelmes, R.J. Cernik and G. Bushnell-Wye.
Rev. Sci. Instrum. 63, 700-704 (1992).
12. Angle-Dispersive Powder-Diffraction Techniques for Crystal Structure Refinement at High Pressure
R.J. Nelmes, P.D. Hatton, M.I. McMahon, R.O. Piltz, J. Crain, R.J. Cernik and G. Bushnell-Wye.
Rev. Sci. Instrum. 63, 1039-1042 (1992).
11. The Effect of Deuteration on the Crystal Structure of Squaric Acid (H2C4O4) in its Ordered Phase
M.I. McMahon, R.J. Nelmes, W.F. Kuhs and D. Semmingsen
Zeit. für Krist. 195, 231-239 (1991).
10. Deuteration and Pressure Effects on the Crystal Structure of Paraelectric NH4H2PO4
R.O. Piltz, M.I. McMahon and R.J. Nelmes
Zeit. für Krist. 195, 241-249 (1991).
9. High-Resolution X-ray Diffraction Studies at High Pressure
J.S. Loveday, M.I. McMahon and R.J. Nelmes
High Pressure Research 4, 402-405 (1990).
8. High-Pressure Neutron-Diffraction Studies of KH2PO4-Type Phase Transitions
M.I. McMahon, R.O. Piltz and R.J. Nelmes
High Pressure Research 4, 444-447 (1990).
7. The Application of Neutron Powder Diffraction Techniques for Crystallographic Studies at High Pressure
P.D. Hatton, C.J. Howard, M.I. McMahon, R.J. Nelmes and N.B. Wilding
High Pressure Research 4, 450-453 (1990).
6. Neutron-Diffraction Studies of the Geometric Isotope Effect in H-Ordering Transitions
R.O. Piltz , M.I. McMahon and R.J. Nelmes
Ferroelectrics 108, 271-274 (1990).
5. Neutron-Diffraction Studies of the Relationship Between Tc and H-Bond Dimensions in H-Ordering Transitions
M.I. McMahon , R.O. Piltz and R.J. Nelmes
Ferroelectrics 108, 277-280 (1990).
4. Possible Disorder of the P Atom in KD2PO4
M.I. McMahon, R.J. Nelmes, W.F. Kuhs and R.O. Piltz
Europhysics Letters 13, 143-148 (1990).
3. Geometric Effects of Deuteration on Hydrogen-Ordering Phase Transitions
M.I. McMahon, R.J. Nelmes, W.F. Kuhs, R. Dorwarth, R.O. Piltz and Z. Tun.
Nature 348, 317-319 (1990).
2. The Effect of Diffraction by the Diamonds of a Diamond-Anvil Cell on Single-Crystal Sample Intensities
J.S. Loveday, M.I. McMahon and R.J. Nelmes
J. Appl. Cryst. 23, 392-396 (1990).
1. Pressure Dependence of the Structure of La-Sr-Cu-O
R.J. Nelmes, N.B. Wilding, P.D. Hatton, V. Caignaert, B. Raveau, M.I. McMahon and R.O. Piltz
Physica C 166, 329-333 (1990).
Malcolm I. McMahon 