Article
Chemistry, Physical
Jing Gao, Fei Chen, Wen Su
Summary: This study investigates the high-pressure infrared spectra of carbonophosphates Na3Mn(PO4)(CO3) and Na3Mg(PO4)(CO3). It is found that Na3Mn(PO4)(CO3) undergoes structural modification under high pressure, while Na3Mg(PO4)(CO3) maintains its structural stability. The [PO4] and [CO3] units in carbonophosphates experience less compression or deformation compared to phosphates and carbonates under the same pressure. This research provides new insights into the role of carbonophosphates in both material sciences and Earth sciences.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Congyan Zhang, Binbin Yue, Uttam Bhandari, Oleg N. Starovoytov, Yan Yang, David P. Young, Jinyuan Yan, Fang Hong, Shizhong Yang
Summary: High-entropy alloys (HEAs) have excellent mechanical properties, but the mechanism of their plastic deformation is not well understood. In this study, in situ experiments were conducted to investigate the compression deformation behavior of the HEA MoNbTaVW under high pressure, revealing a unique plastic behavior mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Crystallography
Maria Mora, Andriy Durygin, Vadym Drozd, Shanece Esdaille, Jiuhua Chen, Surendra Saxena, Xue Liang, Leonid Vasylechko
Summary: In this study, gadolinium aluminate perovskite (GdAlO3) was investigated at high pressures up to 23 GPa using monochromatic synchrotron X-ray powder diffraction. A pressure-induced phase transformation from orthorhombic to rhombohedral structure was observed at 21 GPa and confirmed by DFT calculations. The study also revealed a decrease in structural distortion due to the pressure-induced phase transition.
Article
Chemistry, Physical
Willian R. de Oliveira, Rafael F. Chuproski, Guilherme M. Valadao, Osvaldo M. Cintho, Eder Carlos F. de Souza, Francisco C. Serbena, Gelson B. de Souza
Summary: The study investigated the strong anisotropic expansion of nitrogen-expanded austenite in materials such as stainless steel, Ni-based superalloys, and CoCr alloys. Through plasma nitriding on stainless steel powder grains, the anisotropic nitrogen redistribution in the lattice was found to follow a linear relation during compression and nitriding processes. The transition from low nitrogen content austenite to the S-phase was characterized by inversion of relative magnitudes of elastic moduli and Poisson's ratios, dependent on crystal orientation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Instruments & Instrumentation
Yoshiyuki Okuda, Seiji Kimura, Kenji Ohta, Yohan Park, Tatsuya Wakamatsu, Izumi Mashino, Kei Hirose
Summary: The semiconductor-based heater introduced for diamond anvil cells offers advantages in terms of stability and accuracy under high temperature and pressure conditions. It is easy to install with minimal modifications required and is cost-effective, making it a versatile option for various experimental measurements.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Geosciences, Multidisciplinary
Shijie Huang, Jingui Xu, Daorong Liu, Bo Li, Zhilin Ye, Wei Chen, Yunqian Kuang, Fangli Chi, Dawei Fan, Maining Ma, Wenge Zhou
Summary: The study investigated the thermoelasticity and stability of diaspore under high pressure and high temperature conditions, demonstrating its linear vibration mode and slight compression and thermal expansion anisotropy. Diaspore was found to be stable up to approximately 10.9 GPa and 700 K, making it a potential candidate for transporting water to the deep Earth.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Farhang Nabiei, James Badro, Charles-edouard Boukare, Cecile Hebert, Marco Cantoni, Stephan Borensztajn, Nicolas Wehr, Philippe Gillet
Summary: The study indicates that in a pyrolitic magma ocean, the first mineral to crystallize in the deep mantle is iron-depleted calcium-bearing bridgmanite. The substantial calcium solubility in bridgmanite significantly delays the crystallization of the calcium silicate perovskite phase during magma ocean solidification.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Linmao Qian, Zhuoyuan Liu, Shixue Guan, Jinxuan Bai
Summary: The high pressure structural transformation of 95W-3.5Ni-1.5Fe alloy was investigated using in-situ high pressure synchrotron radiate-on X-ray diffraction technique. The extreme compressive stress led to reversible structural evolution, with changes in grain size, atomic positions, bond distance, and unit cell volume. The study also revealed the structure responses of tungsten heavy alloy under high pressure and high temperature, as well as the formation and evolution of screw dislocations under various hydrostatic pressures.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Physics, Multidisciplinary
Johannes M. Kaa, Christian Sternemann, Karen Appel, Valerio Cerantola, Thomas R. Preston, Christian Albers, Mirko Elbers, Lelia Libon, Mikako Makita, Alexander Pelka, Sylvain Petitgirard, Christian Plueckthun, Vladimir Roddatis, Christoph J. Sahle, Georg Spiekermann, Christian Schmidt, Anja Schreiber, Robin Sakrowski, Metin Tolan, Max Wilke, Ulf Zastrau, Zuzana Konopkova
Summary: Investigating the spin state and structural changes of iron-bearing compounds at high pressure and temperature is crucial for understanding the properties of the Earth's deep interior. In this study, we used a unique X-ray laser beam to heat and probe an FeCO3 sample, simultaneously measuring its fluorescence spectra and diffraction patterns. Our findings provide valuable insights into the structure and dynamics of planetary and exoplanetary interiors.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Chemistry, Inorganic & Nuclear
A. N. Arpita Aparajita, N. R. Sanjay Kumar, Sharat Chandra, N. V. Chandra Shekar, S. Kalavathi
Summary: A new phase of chromium carbide was successfully synthesized under high pressure-high temperature conditions using laser heated diamond anvil cell (LHDAC). The phase was characterized as an off-stoichiometric CrC crystallizing in a hexagonal lattice, showing metallic properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Andrey Aslandukov, Pascal L. Jurzick, Maxim Bykov, Alena Aslandukova, Artem Chanyshev, Dominique Laniel, Yuqing Yin, Fariia I. Akbar, Saiana Khandarkhaeva, Timofey Fedotenko, Konstantin Glazyrin, Stella Chariton, Vitali Prakapenka, Fabrice Wilhelm, Andrei Rogalev, Davide Comboni, Michael Hanfland, Natalia Dubrovinskaia, Leonid Dubrovinsky
Summary: A series of isostructural Ln(3)O(2)(CN3) compounds were successfully synthesized under high-pressure high-temperature conditions. The crystal structure of these compounds was determined and confirmed using SCXRD, XANES measurements, and DFT calculations. It was also found that the unit cell volumes and compressibility of the compounds were influenced by the lanthanide contraction phenomenon. Additionally, the stabilization of the CN35- guanidinate anion at ambient conditions provides new opportunities in inorganic and organic synthetic chemistry.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Instruments & Instrumentation
Christian Childs, Dean Smith, G. Alexander Smith, Paul Ellison, Daniel Sneed, Jasmine Hinton, Emily Siska, Jeffrey S. S. Pigott, Eric Rod, William O'Donnell, Ran Salem, Blake Sturtevant, R. Jason Scharff, Nenad Velisavljevic, Changyong Park, Ashkan Salamat
Summary: In this paper, we present a portable CO2 laser heating system for in situ x-ray absorption spectroscopy (XAS) studies. Back scattering optical measurements are enabled by implementing a Ge beamsplitter and temperature measurements are free of chromatic aberration due to the implementation of the peak-scaling method and mode scrambling of the input signal. Laser power stabilization is achieved using electronic feedback, providing a steady power crucial for longer XAS collections.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2022)
Article
Instruments & Instrumentation
Sophia Li, Christopher Alcorn, Chelsea Neil
Summary: In-situ Raman spectroscopy is a powerful technique for monitoring geochemical reactions in real time. This article presents the development and testing of an in-situ Raman spectroscopic cell, validated by measuring the temperature-dependent conversion of gypsum to calcite. The cell can be an important tool for quantifying carbon mineralization rates relevant to geologic carbon sequestration.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Materials Science, Multidisciplinary
Andrew C. Strzelecki, Stella Chariton, Cody B. Cockreham, Michael T. Pettes, Vitali Prakapenka, Bethany A. Chidester, Di Wu, Chris R. Bradley, Garrett G. Euler, Xiaofeng Guo, Hakim Boukhalfa, Hongwu Xu
Summary: This study characterized the high-pressure behavior of a clinoptilolite zeolite by conducting in situ high-pressure experiments and analyzing the crystal structure. The results showed that the Si/Al ratio and pressure-transmitting media influenced the compressional behavior of the zeolite. These findings are important for understanding the high-pressure behavior of microporous materials and developing geophysical signatures for underground nuclear monitoring.
PHYSICS AND CHEMISTRY OF MINERALS
(2022)
Article
Chemistry, Multidisciplinary
Lukas Bruening, Nityasagar Jena, Elena Bykova, Pascal L. Jurzick, Niko T. Flosbach, Mohamed Mezouar, Michael Hanfland, Nico Giordano, Timofey Fedotenko, Bjoern Winkler, Igor A. Abrikosov, Maxim Bykov
Summary: This study successfully synthesized antimony guanidinate under high pressure conditions and determined its crystal structure and properties. The discovery of the guanidinate anion marks a significant milestone in carbonitride chemistry and paves the way for the development of new inorganic nitridocarbonates.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Guoyin Shen, Jesse S. Smith, Curtis Kenney-Benson, Richard A. Ferry
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Geochemistry & Geophysics
Tony Yu, Clemens Prescher, Young Jay Ryu, Feng Shi, Eran Greenberg, Vitali Prakapenka, Peter Eng, Joanne Stubbs, Yoshio Kono, Guoyin Shen, Heather Watson, Mark L. Rivers, Stephen R. Sutton, Yanbin Wang
Article
Geosciences, Multidisciplinary
Yong-Hyun Kim, Yoo Soo Yi, Hyo-Im Kim, Paul Chow, Yuming Xiao, Guoyin Shen, Sung Keun Lee
GEOPHYSICAL RESEARCH LETTERS
(2019)
Article
Chemistry, Physical
Yu Shu, Yoshio Kono, Itaru Ohira, Quanjun Li, Rostislav Hrubiak, Changyong Park, Curtis Kenney-Benson, Yanbin Wang, Guoyin Shen
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Physics, Multidisciplinary
Sung Keun Lee, Yong-Hyun Kim, Yoo Soo Yi, Paul Chow, Yuming Xiao, Cheng Ji, Guoyin Shen
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
Guoyin Shen, Yanbin Wang, Agnes Dewaele, Christine Wu, Dayne E. Fratanduono, Jon Eggert, Stefan Klotz, Kamil F. Dziubek, Paul Loubeyre, Oleg Fat'yanov, Paul D. Asimow, Tsutomu Mashimo, Renata M. M. Wentzcovitch, Jay Bass, Yan Bi, Duanwei He, Konstantin Khishchenko, Kurt Leinenweber, Baosheng Li, Takeshi Sakai, Taku Tsuchiya, Katsuya Shimizu, Daisuke Yamazaki, Mohamed Mezouar
HIGH PRESSURE RESEARCH
(2020)
Article
Chemistry, Physical
Yu Shu, Yoshio Kono, Itaru Ohira, Rostislav Hrubiak, Curtis Kenney-Benson, Maddury Somayazulu, Nenad Velisavljevic, Guoyin Shen
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Chemistry, Multidisciplinary
Larissa Q. Huston, Alois Lugstein, Guoyin Shen, David A. Cullen, Bianca Haberl, Jim S. Williams, Jodie E. Bradby
Summary: High-pressure synthesis can create promising silicon allotropes, some of which have direct band gaps under tensile strain while others have narrow band gaps and good absorption properties. This study has discovered a new pressure-temperature pathway for producing silicon nanowires with transformative properties, opening up new possibilities for nanomaterial synthesis.
Article
Chemistry, Multidisciplinary
Yong-Hyun Kim, Yoo Soo Yi, Hyo-Im Kim, Paul Chow, Yuming Xiao, Guoyin Shen, Sung Keun Lee
Summary: This study reports the pressure-driven changes in the electronic configurations and their delocalization around oxygen in glasses using inelastic X-ray scattering spectroscopy. The results reveal that the densification of the glass is a result of an increase in oxygen proximity and the formation of topologically disordered oxygen configurations. The findings suggest the electronic origins of densification in heavy-metal-bearing oxide glasses and shed light on the direct probing of the electronic density of states in high-Z oxides under compression.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Seth Iwan, Chia-Min Lin, Christopher Perreault, Kallol Chakrabarty, Cheng-Chien Chen, Yogesh Vohra, Rostislav Hrubiak, Guoyin Shen, Nenad Velisavljevic
Summary: High-entropy transition metal borides offer novel opportunities for designing materials with crystalline phase stability, high strength, and thermal oxidation resistance under extreme conditions. The comprehensive theoretical and experimental investigation of prototypical high-entropy boride materials showed excellent performance in terms of compressive strength and phase stability, making them suitable for structural applications in nuclear and aerospace fields.
Article
Physics, Multidisciplinary
Matthew R. Diamond, Guoyin Shen, Dmitry Y. Popov, Changyong Park, Steven D. Jacobsen, Raymond Jeanloz
Summary: High-pressure single-crystal x-ray diffraction is used to experimentally map the electron-density distribution changes in (Fe,Mg)O as ferrous iron undergoes a pressure-induced transition from high- to low-spin states. Our results have applications to geophysics as well as to validating first-principles calculations, as this electronic transition affects the bulk density and elasticity of magnesiow??stite, one of the dominant mineral phases of Earth's mantle. The observed changes in diffraction intensities indicate a spin-transition-induced change in orbital occupancies of the Fe ion, in line with crystal-field theory.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Zhou Lu, Cynthia M. Archambault, Shan Li, Umar Syed, Sicheng Wang, Abinaya Kumar, Guoyin Shen, Zhenxian Liu, Mohammad A. Omary, Hao Yan
Summary: Metallophilicity in multinuclear systems exhibits intrinsic anisotropy under isotropic compression, resulting in anomalous anisotropies in (supra)molecular structures, vibrations, and interaction energies. Mechanical pressure modulation also enhances piezochromic luminescence with similar to 103 modulation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Sung Keun Lee, Yoosoo Yi, Yong-Hyun Kim, Hyo-im Kim, Paul Chow, Yuming Xiao, Peter Eng, Guoyin Shen
Summary: Diamond's unprecedented hardness is due to its electronic bonding nature under extreme pressure, which has been experimentally observed through inelastic x-ray scattering spectra measurements up to 2 million atmospheres. The observed changes in electronic structure reveal the ability of diamond to withstand deformation and internal stress, shedding light on the origin of its hardness.
Article
Physics, Multidisciplinary
Guoyin Shen, Jesse S. Smith, Curtis Kenney-Benson, Stefan Klotz
Summary: The study measured and determined the luminescence shifts of ruby and Sm2+:SrFCl and their relationship with pressure, providing important data for the use of pressure gauges.
HIGH PRESSURE RESEARCH
(2021)
Article
Physics, Multidisciplinary
Yoshio Kono, Yu Shu, Curtis Kenney-Benson, Yanbin Wang, Guoyin Shen
PHYSICAL REVIEW LETTERS
(2020)
