EHPRG

Welcome to the official website of the European High Pressure Research Group (EHPRG).

EHPRG is non-profitable academic association established in 1963 which is devoted to science and technology of matter under high pressure. It organizes an annual meeting which brings together hundreds of scientists of various fields, mainly physics, chemistry, Earth and planetary sciences, bio- and food science and technology.

The reasonable size of the group, low conference fees, and a friendly relationship between the attendants have made EHPRG meetings a major event in the European high-pressure community for more than half a century.

Selection of high-pressure related titles from top scientific journals.

Bulk hexagonal diamond
by Shoulong Lai


Nature, Published online: 04 March 2026; doi:10.1038/s41586-026-10212-4

The synthesis of millimetre-sized phase-pure hexagonal diamond, a polymorph of cubic diamond, by compressing highly oriented pyrolytic graphite under high pressures and temperatures is reported, providing new insight into the graphite-to-diamond transformation pathway.
4 Mar 2026 at 12:00am
Under pressure: the reality of Mexico’s research system
by Oscar Xavier Guerrero Gutiérrez


Nature, Published online: 04 March 2026; doi:10.1038/d41586-026-00442-x

Researcher Oscar Xavier Guerrero Gutiérrez speaks out about the unstable conditions that Mexican scientists face — and what can be done to help.
4 Mar 2026 at 12:00am
Overlooked and overexploited: Extensive conversion of grasslands and wetlands driven by global food, feed, and bioenergy demand
by Siyi KanSamuel A. LevyElise MazurLeah SambergU. Martin PerssonLindsey SloatAna L. Reboredo SegoviaLeandro ParenteThomas KastneraSenckenberg Biodiversity and Climate Research Centre, Senckenberg – Leibniz Institution for Biodiversity and Earth System Research, Frankfurt am Main 60325, GermanybAccountability Framework initiative, Rainforest Alliance, New York, NY 10001cLand and Carbon Lab, World Resources Institute, Washington, DC 20002dDepartment of Space, Earth and Environment, Chalmers University of Technology, Gothenburg 41296, SwedeneGothenburg Global Biodiversity Centre, Gothenburg 40530, SwedenfOpenGeoHub Foundation, Doorwerth 6865HK, Netherlands
Proceedings of the National Academy of Sciences, Volume 123, Issue 9, March 2026.
SignificanceVast natural ecosystems are being cleared for agriculture to meet rising domestic and international demand. While forests have received significant policy and research attention, land-use pressure is increasingly shifting to grasslands and ...
23 Feb 2026 at 9:00am

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Pressure-Induced 18 K Superconductivity and Two Superconducting Phases in ${\text{CuIr}}_{2}{\mathrm{S}}_{4}$
by Bijuan Chen, Yuhao Gu, Dong Wang, Dexi Shao, Wen Deng, Xin Han, Meiling Jin, Jing Song, Yu Zeng, Hirofumi Ishii, Yen-Fa Liao, Dongzhou Zhang, Jianbo Zhang, Youwen Long, Jinlong Zhu, Liuxiang Yang, Hong Xiao, Jia-cai Nie, Youguo Shi, Changqing Jin, Jiangping Hu, Ho-kwang Mao, and Yang Ding
Author(s): Bijuan Chen, Yuhao Gu, Dong Wang, Dexi Shao, Wen Deng, Xin Han, Meiling Jin, Jing Song, Yu Zeng, Hirofumi Ishii, Yen-Fa Liao, Dongzhou Zhang, Jianbo Zhang, Youwen Long, Jinlong Zhu, Liuxiang Yang, Hong Xiao, Jia-cai Nie, Youguo Shi, Changqing Jin, Jiangping Hu, Ho-kwang Mao, and Yang Ding


CuIr2S4 becomes a bulk superconductor with Tc of 18.2 K under pressure, a new record for spinels, and splits into two distinct superconducting phases that coexist over a broad window.


[Phys. Rev. Lett. 136, 096505] Published Wed Mar 04, 2026
4 Mar 2026 at 11:00am
Colloquium: Room temperature superconductivity: The roles of theory and materials design
by Warren E. Pickett
Author(s): Warren E. Pickett


Superconductivity, discovered in 1911 and first theoretically understood in 1957, remains a fascinating phenomenon for reasons both fundamental and applied. Reliably calculating the critical temperature of a given material, and even more so predicting it, turned out to be a considerable challenge. This Colloquium explains how theoretical developments have led to increasingly reliable predictions that have culminated in the discovery of the hydride materials that display superconductivity under high pressure at temperatures just shy of room temperature.


[Rev. Mod. Phys. 95, 021001] Published Fri Apr 07, 2023
7 Apr 2023 at 12:00pm
Cooperation of oxygen doping and nitrogen vacancies in graphitic carbon nitride via high-pressure and high-temperature strategy for enhanced photocatalytic ${\mathrm{H}}_{2}$ evolution
by Tingcha Wei, Yonglei Feng, Jiaying Liao, Xinyu He, Xiu Cao, Jianing Xu, Si Zhou, and Jijun Zhao
Author(s): Tingcha Wei, Yonglei Feng, Jiaying Liao, Xinyu He, Xiu Cao, Jianing Xu, Si Zhou, and Jijun Zhao


The efficacy of single-site defect engineering in graphitic carbon nitride ($\mathrm{g}−{\mathrm{C}}_{3}{\mathrm{N}}_{4}$) is often compromised by the inevitable creation of charge recombination centers. To overcome this limitation, we propose a synergistic dual-site defect strategy and develop a hi…


[Phys. Rev. Materials 10, 035401] Published Thu Mar 05, 2026
5 Mar 2026 at 11:00am
Structural evolution of the Fe-Si binary system under extreme pressure
by Bingxin Wu, Zepeng Wu, Peng Chen, Nan Huang, Tie-Yu Lü, Xinrui Cao, Yang Sun, Zi-Zhong Zhu, and Shunqing Wu
Author(s): Bingxin Wu, Zepeng Wu, Peng Chen, Nan Huang, Tie-Yu Lü, Xinrui Cao, Yang Sun, Zi-Zhong Zhu, and Shunqing Wu


The stability of Fe-Si compounds under extreme pressure is critical for understanding the composition and evolution of Earth's core and terrestrial planetary interiors. Using first-principles calculations and adaptive genetic algorithm crystal structure prediction method, we systematically investiga…


[Phys. Rev. Materials 10, 033603] Published Mon Mar 02, 2026
2 Mar 2026 at 11:00am
Deep learning potential for accurate shock response simulations in tin
by Yixin Chen, Xiaoyang Wang, Wanghui Li, Mohan Chen, and Han Wang
Author(s): Yixin Chen, Xiaoyang Wang, Wanghui Li, Mohan Chen, and Han Wang


The shock loading responses of Sn have attracted significant interest. Although atomistic simulations have been useful for uncovering nano-scale mechanisms behind experimental observations, exiting potentials of Sn lack sufficient accuracy especially for predicting its complex high-pressure phase transitions. To overcome this challenge, the authors construct DP-SCAN-S, an machine learning potential trained on comprehensive DFT data spanning an extensive thermodynamic range from 0–100 GPa pressure and 0–5000 K temperature. It accurately reproduces DFT-derived basic properties, experimental melting curves, solid-solid phase boundaries, and shock Hugoniot results. This demonstrates the model’s potential to bridge ab initio precision with large-scale dynamic simulations.


[Phys. Rev. Materials 10, 023605] Published Wed Feb 25, 2026
25 Feb 2026 at 11:00am
High-pressure synthesis of quantum magnet $M\text{−}{\mathrm{YbTaO}}_{4}$ with a stretched diamond lattice
by Nicola D. Kelly, Xuan Liang, Siân E. Dutton, Kazunari Yamaura, and Yoshihiro Tsujimoto
Author(s): Nicola D. Kelly, Xuan Liang, Siân E. Dutton, Kazunari Yamaura, and Yoshihiro Tsujimoto


We report bulk magnetic properties of ytterbium tantalate in its monoclinic fergusonite modification, $M\text{−}{\mathrm{YbTaO}}_{4}$. The spin-$\frac{1}{2} {\mathrm{Yb}}^{3+}$ ions in this phase are arranged on a geometrically frustrated “stretched diamond” lattice. $M\text{−}{\mathrm{YbTaO}}_{4}$ …


[Phys. Rev. Materials 10, 024411] Published Wed Feb 25, 2026
25 Feb 2026 at 11:00am
Thermally activated epitaxy of NbO
by Sandra Glotzer, Jeong Rae Kim, and Joseph Falson
Author(s): Sandra Glotzer, Jeong Rae Kim, and Joseph Falson


Refractory metal compounds are difficult to synthesize due to the extreme thermodynamic windows required, and therefore deconvoluting intrinsic properties from extrinsic effects can be challenging. This work dives into the synthesis and electronic properties of thin films of the refractory metal oxide NbO utilizing ultrahigh growth temperatures. The highlight is the ability to access a “thermally activated epitaxy” growth regime at very high temperatures (T > 1000 °C), which enables reproducible synthesis across a wide range of oxygen partial pressures. Using samples grown in this regime, the authors propose the prototypical electrical properties of NbO, for which a consensus has not yet been made in the literature.


[Phys. Rev. Materials 10, 023402] Published Thu Feb 19, 2026
19 Feb 2026 at 11:00am
Polar-nonpolar phase competition of ferroelectric materials under coupled shock pressure and self-generated electric field
by Qiu Feng, Zhengwei Xiong, Anwei Sun, Mengqi Liu, Minjiang Dan, Xiaoru Liu, and Zhipeng Gao
Author(s): Qiu Feng, Zhengwei Xiong, Anwei Sun, Mengqi Liu, Minjiang Dan, Xiaoru Liu, and Zhipeng Gao


Ferroelectric materials have attracted significant attention due to their excellent piezoelectric, pyroelectric, and ferroelectric properties. In applications where ferroelectric ceramics are subjected to coupled shock pressure-self-generated electric field environments, their phase structures criti…


[Phys. Rev. Materials 10, 024401] Published Mon Feb 02, 2026
2 Feb 2026 at 11:00am
Machine learning-based interatomic potential development and phase transition analysis of ferroelectric hafnium dioxide
by Yasantha Hetti Kankanamalage, Yufeng Xi, Shuai Zhang, Sobhit Singh, and Niaz Abdolrahim
Author(s): Yasantha Hetti Kankanamalage, Yufeng Xi, Shuai Zhang, Sobhit Singh, and Niaz Abdolrahim


The ferroelectric phase ($Pca{2}_{1}$, which is in orthorhombic symmetry) of hafnium dioxide $({\mathrm{HfO}}_{2})$ has gained much attention due to its potential applications in nanoelectronics and advanced memory devices. However, its complex phase behavior under external stimuli, such as pressure…


[Phys. Rev. Materials 10, 014414] Published Thu Jan 29, 2026
29 Jan 2026 at 11:00am
Potential high-${T}_{\mathrm{c}}$ superconductors in the ternary Ce/Th-Sc-H system under pressure
by Guanlin Li, Zihao Huo, Guiyan Dong, Tiancheng Ma, Hao Ma, Qiwen Jiang, Fubo Tian, and Defang Duan
Author(s): Guanlin Li, Zihao Huo, Guiyan Dong, Tiancheng Ma, Hao Ma, Qiwen Jiang, Fubo Tian, and Defang Duan


The recent discovery of high-pressure hydrides has revealed superconducting critical temperatures (${T}_{\mathrm{c}}$) surpassing 200 K above 150 GPa, advancing the pursuit of room-temperature superconductivity. Although ongoing research aims to elevate the ${T}_{\mathrm{c}}$ in these systems furthe…


[Phys. Rev. B 113, 104504] Published Thu Mar 05, 2026
5 Mar 2026 at 11:00am
Knight shift measurements probing Fermi surface changes under pressure in ${\mathrm{CeRhIn}}_{5}$
by Y.-H. Nian, C. Chaffey, P. Sherpa, L. Santillan, K. Nagashima, P. Klavins, V. Taufour, and N. J. Curro
Author(s): Y.-H. Nian, C. Chaffey, P. Sherpa, L. Santillan, K. Nagashima, P. Klavins, V. Taufour, and N. J. Curro


Here, the authors report nuclear magnetic resonance Knight shift measurements as a function of pressure in the archetype heavy fermion superconductor CeRhIn5, revealing a suppression of the hyperfine coupling between the nuclear and electron spins. The result can be understood as a change of 4f electron content at the Fermi surface as the system approaches a quantum critical point.


[Phys. Rev. B 113, 115108] Published Thu Mar 05, 2026
5 Mar 2026 at 11:00am
Incorporating Gibbs free energy into interatomic potential fitting
by Liangrui Wei and Yang Sun
Author(s): Liangrui Wei and Yang Sun


The Gibbs free energy is one of the most fundamental quantities governing the thermodynamics of materials, particularly under extreme conditions. Here, the authors introduce a framework that incorporates the Gibbs free energy into interatomic potential development. The method is rooted in Hamiltonian thermodynamic integration and is integrated with conventional fitting procedures, providing systematic control over both structural and thermodynamic properties. Applications to nickel and iron oxide systems demonstrate improved thermodynamic accuracy in molecular dynamics simulations at high pressures and temperatures.


[Phys. Rev. B 113, 094103] Published Mon Mar 02, 2026
2 Mar 2026 at 11:00am
Structural, elastic and thermodynamic characteristics of trigonal-type Zintl phases CaZn2X2 (X = P or As) under hydrostatic pressure: prospects for advanced materials in high pressure and thermoelectric devices
by Missoum Radjai Abdelmadjid Bouhemadou Saber Saad Essaoud Djamel Allali Rabah Khenata Yarub Al-Douri a Laboratory of Physics of Experimental Techniques and Their Applications (LPTEAM), University of Yahia Fares, Medea, Algeriab Laboratory for Developing New Materials and their Characterizations, Department of Physics, Faculty of Science, Ferhat Abbas University – Setif 1, Setif, Algeriac Department of Physics, Faculty of Sciences, University of M'sila, M'sila, Algeriad Laboratory of materials and renewable energy, Faculty of science, University of M'sila, M'sila, Algeriae Physics and Chemistry of Materials Lab, Department of Physics, University of M'sila, M'sila, Algeriaf Laboratoire de Physique Quantique de la Matière et de Modélisation Mathématique (LPQ3M), Université de Mascara, Mascara, Algeriag College of Health and Medical Techniques, Al-Bayan University, Baghdad, Iraqh Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, Kuala Lumpur, Malaysiai Department of Mechanical Engineering, Faculty of Engineering, Piri Reis University, Istanbul, Turkey
Volume 45, Issue 4, December 2025, Page 314-332
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31 Oct 2025 at 10:07am
First-principles study of the superconducting transition temperature Tc in compressed barium: structural identification based on the pressure dependence of Tc
by Masaaki Geshi Hiroki Funashima Gayan P. Hettiarachchi a R3Institute for Newly-Emerging Science Design, The University of Osaka, Toyonaka, Japanb Department of Comprehensive Engineering, Kindai University Technical College, Nabari, Japan
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16 Jan 2026 at 4:11am
Pressure-induced Mott transition and signatures of superconductivity in β′-(BEDT-TTF)2RCF2SO3 (R = CF3, SF5)
by T. Kobayashi R. Jogo Y. Uwatoko T. Siegrist J. A. Schlueter H. Taniguchi a Graduate School of Science and Engineering, Saitama University, Saitama, Japanb Research and Development Bureau, Saitama University, Saitama, Japanc Institute for Solid State Physics, University of Tokyo, Chiba, Japand Faculty of Science and Engineering, Tokyo City University, Setagaya, Tokyo, Japane Center for Rare Earths, Critical Minerals, and Industrial Byproducts, National High Magnetic Field Laboratory, Tallahassee, Florida, USAf Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida, USAg Materials Science Division, Argonne National Laboratory, Argonne, Illinois, USAh Division of Materials Research, National Science Foundation, Alexandria, Virginia, USA
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22 Jan 2026 at 9:06am
High pressure H-type electrochemical cell enabling gas collection: application to CO₂ electrolysis
by Hoshi Ohnaru Yosuke Ishii Shinji Kawasaki Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
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2 Feb 2026 at 1:13pm
Development of an ultrafast pump-probe spectroscopy system and its application to pressure-tuned organic superconductors
by S. Tsuchiya K. Inomata A. Shinozaki H. Taniguchi Y. Toda a Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japanb Faculty of Science, Hokkaido University, Sapporo, Hokkaido, Japanc Faculty of Science, Saitama University, Saitama, Japan
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3 Feb 2026 at 3:18am
Pressure dependence of Yb mean valence in intermediate-valence quasicrystal Au–Al–Yb
by Keiichiro Imura Kazushi Sakamoto Shinjiro Yokota Kazuhiko Deguchi Nozomu Hiraoka Hirofumi Ishii Noriaki K. Sato a Institute of Liberal Arts and Sciences, Nagoya University, Nagoya, Japanb Graduate School of Science, Nagoya University, Nagoya, Japanc SPring-8 Taiwan Beamline Office, National Synchrotron Radiation Research Center, Hsinchu, Taiwand Center for General Education, Aichi Institute of Technology, Toyota, Japan
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18 Feb 2026 at 2:42am
AC Magnetization measurements of a Hg-based cuprate superconductor at high pressure using various pressure transmitting media
by Masaki Mito Sin-nosuke Maeda Kazuhira Shoji Kazuma Tsutsumi Kazuma Ogata Nao Takeshita Ayako Yamamoto a Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu, Japanb National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japanc College of Engineering, Shibaura Institute of Technology, Saitama, Japan
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20 Feb 2026 at 2:53am
High pressure synthesis and magnetic properties of heavy-rare-earth filled skutterudite compounds ROs4P12 (R =Gd, Tb, Dy and Ho)
by Chihiro Sekine Rikuto Watanabe Satoshi Terasaka Yukihiro Kawamura Jun-ichi Hayashi Hirotada Gotou a Graduate School of Engineering, Muroran Institute of Technology, Muroran, Japanb Institute for Solid State Physics, University of Tokyo, Kashiwa, Japan
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26 Feb 2026 at 8:15am
High-pressure thermally detected electron spin resonance measurements of spin-gap compound Cu2(C5H12N2)2Cl4
by Takahiro Sakurai Makoto Saga Kazuyuki Takahashi Susumu Okubo Hitoshi Ohta a Core Facility Center, The University of Osaka, Suita, Osaka, Japanb Research Facility Center for Science and Technology, Kobe University, Kobe, Japanc Graduate School of Science, Kobe University, Kobe, Japand Molecular Photoscience Research Center, Kobe University, Kobe, Japan
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5 Mar 2026 at 3:15am
Pressure-driven evolution of structural, mechanical and thermodynamic properties of Zr2GeN and Zr2GeF: a first-principles investigation
by Sofiane Blilita Kamel Kassali Abdelmadjid Bouhemadou Samira Foudi a Optoelectronic and Components Laboratory, Department of Physics, Faculty of Science, Ferhat Abbas University – Setif 1, Setif, Algeriab Quantum Physics and Dynamic Systems Laboratory, Department of Physics, Faculty of Science, Ferhat Abbas University – Setif 1, Setif, Algeriac Laboratory for Developing New Materials and Their Characterizations, Department of Physics, Faculty of Science, Ferhat Abbas University – Setif 1, Setif, Algeriad Department of Physics, Faculty of Science, Ferhat Abbas University – Setif 1, Setif, Algeria
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30 Dec 2025 at 6:47am
PIPS-2025: an updated practical pressure scale for the large-volume presses
by Yanbin Wang Guoyin Shen Kurt Leinenweber Agnès Dewaele Tomoo Katsura Yu Nishihara Takayuki Ishii Jon Eggert Kamil Dziubek a GeoSoilEnviroCARS, Center to Advanced Radiation Sources, The University of Chicago, Chicago, IL, USAb HPCAT, X-ray Science Division, Argonne National Laboratory, Lemont, IL, USAc FORCE, Arizona State University, Tempe, AZ, USAd CEA, DIF, Arpajon, Francee Laboratoire Matière en Conditions Extrêmes, Université Paris-Saclay, CEA Bruyères-le-Châtel, Francef Bavarian Geo-Institute for Experimental Geochemistry and Geophysics, University of Bayreuth, Bayreuth, Germanyg Geodynamics Research Center, PIAS, Ehime University, Matsuyama, Japanh Institute for Planetary Materials, Okayama University, Misasa, Japani Lawrence Livermore National Laboratory, Livermore, CA, USAj Department of Mineralogy and Crystallography, University of Vienna, Vienna, Austria
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23 Jan 2026 at 2:49am
Two distinct pressure-induced phase transitions in 1-butyl-2,3-dimethylimidazolium tetrafluoroborate
by Hiroki Wakatsuki Koji Nishi Takahiro Takekiyo Yukihiro Yoshimura Department of Applied Chemistry, National Defense Academy, Kanagawa, Japan
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27 Feb 2026 at 10:55am
A closer look under extreme pressure: sub-micron diffraction mapping in a diamond anvil cell
by Cameron M. Lonsdale James D. McHardy Christian V. Storm Konstantin Glazyrin Mohamed Mezouar Malcolm I. McMahon a SUPA, School of Physics and Astronomy, and Centre for Science at Extreme Conditions, The University of Edinburgh, Edinburgh, United Kingdomb Photon Science, Deutsches Elektronen-Synchrotron DESY, Hamburg, Germanyc Matter at Extremes, Experiments Division, European Synchrotron Radiation Facility, Grenoble, France
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17 Feb 2026 at 6:51am