Welcome
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.
Upcoming EHPRG Meeting
The 62nd EHPRG Meeting will take place in Manchester, UK, at the Lowry, in the period August 31-September 5, 2025.
The conference will be chaired by John Proctor, Salford University, UK.
For more information, please visit the official webpage of EHPRG-62.
Immediate past EHPRG Meetings
The 61st EHPRG Meeting has taken place in Thessaloniki, Greece, at the Porto Palace Hotel, in the period September 1-6, 2024.
The conference has been chaired by John Arvanitidis and Dimitris Christofilos, Aristotle University of Thessaloniki.
For more information, please visit the official webpage of EHPRG-61.
The Joint 28th AIRAPT and 60th EHPRG International Conference on High Pressure Science and Technology (AIRAPT-2023) took place in Edinburgh, UK, at the Edinburgh International Conference Centre (EICC), from July 23-28, 2023.
Immediately prior to AIRAPT/EHPRG, from the 19th to 23rd of July 2023, a Summer School had taken place, also based in Edinburgh, with accommodation provided in University Halls of Residence. The School was aimed at young researchers, and experimentalists wanting a grounding in theory and vice versa.
A photo album is available on the AIRAPT website.
For more information, please visit the official webpage of AIRAPT-23.
High-pressure in the headlines
Selection of high-pressure related titles from top scientific journals.
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Magnetic order sets the stage
by Michael Smidman
Nature Physics, Published online: 17 February 2025; doi:10.1038/s41567-024-02772-x
High-temperature superconductivity has been found in a nickelate material under pressure, but the underlying state is unclear. Muons now show that the material hosts distinct phases that evolve differently with increasing pressure.17 Feb 2025 at 12:00am
Pressure-enhanced splitting of density wave transitions in La3Ni2O7–δ
by Rustem Khasanov
Nature Physics, Published online: 17 February 2025; doi:10.1038/s41567-024-02754-z
The density wave transition in a superconducting nickelate is shown to split when hydrostatic pressure is applied, indicating that it is composed of both a spin density wave and another form of ordered state.17 Feb 2025 at 12:00am

Drylands are the backbone of global agriculture, supporting 44% of the world’s farming. Yet, they are under siege. Climate change, land degradation, and water scarcity are transforming these essential regions into barren landscapes, threatening the ...
13 Feb 2025 at 3:01pm
Creation, stabilization, and investigation at ambient pressure of pressure-induced superconductivity in Bi0.5Sb1.5Te3
by Liangzi DengBusheng WangClayton HalbertDaniel J. SchulzeMelissa GoochTrevor BontkeTing-Wei KuoXin ShiShaowei SongNilesh SalkeHung-Duen YangZhifeng RenRussell J. HemleyEva ZurekRohit P. PrasankumarChing-Wu ChuaDepartment of Physics and Texas Center for Superconductivity at the University of Houston, Houston, TX 77204bDepartment of Chemistry, University at Buffalo, Buffalo, NY 14260cDepartment of Chemistry, University of Illinois Chicago, Chicago, IL 60607dDepartment of Physics, National Sun Yet-Sen University, Kaohsiung 80424, TaiwaneDepartment of Physics, University of Illinois Chicago, Chicago, IL 60607fDepartment of Earth and Environmental Sciences, University of Illinois Chicago, Chicago, IL 60607gEnterprise Science Fund, Intellectual Ventures, Bellevue, WA 98005
Proceedings of the National Academy of Sciences, Volume 122, Issue 6, February 2025.
SignificanceAs noted by the renowned material scientist Pol Duwez, almost all solids important to industry are in their metastable states. For example, since 1993, all record high superconducting transition temperatures have been achieved in materials ...
4 Feb 2025 at 9:00am
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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
Pressure-induced topological changes in the Fermi surface of a two-dimensional molecular conductor
by T. Kobayashi, K. Yoshimi, H. Ma, S. Sekine, H. Taniguchi, N. Matsunaga, A. Kawamoto, and Y. Uwatoko
Author(s): T. Kobayashi, K. Yoshimi, H. Ma, S. Sekine, H. Taniguchi, N. Matsunaga, A. Kawamoto, and Y. Uwatoko
We demonstrated x-ray structural analysis of the pressure-induced superconductor ${β}^{′}\text{−}{\mathrm{ET}}_{2}{\mathrm{ICl}}_{2}$ under extremely high pressure conditions, where ET denotes bis(ethylenedithio)tetrathiafulvalene. This material has been known as the highest transition temperature (…
[Phys. Rev. Materials 9, L021801] Published Fri Feb 07, 2025
7 Feb 2025 at 11:00am
Pressure driven iso-structural phase transition and its implication on the Néel skyrmion host hexagonal PtMnGa
by K. K. Dubey, S. Rastogi, Ajit K. Jena, Gaurav K. Shukla, Parul Devi, Seung-Cheol Lee, Satadeep Bhattacharjee, R. Rawat, Boby Joseph, and Sanjay Singh
Author(s): K. K. Dubey, S. Rastogi, Ajit K. Jena, Gaurav K. Shukla, Parul Devi, Seung-Cheol Lee, Satadeep Bhattacharjee, R. Rawat, Boby Joseph, and Sanjay Singh
Magnetic skyrmions are nanometer-sized whirling spin textures in the magnetic material, which have the potential to revolutionize the field of spintronics. This study explores the influence of pressure on the structural properties of the PtMnGa hexagonal system, recognized for hosting Néel skyrmions…
[Phys. Rev. Materials 8, 125404] Published Fri Dec 27, 2024
27 Dec 2024 at 11:00am
Growth and characterization of the ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7−δ}$ thin films: Dominant contribution of the ${d}_{{x}^{2}−{y}^{2}}$ orbital at ambient pressure
by Yuecong Liu, Mengjun Ou, Haifeng Chu, Huan Yang, Qing Li, Ying-Jie Zhang, and Hai-Hu Wen
Author(s): Yuecong Liu, Mengjun Ou, Haifeng Chu, Huan Yang, Qing Li, Ying-Jie Zhang, and Hai-Hu Wen
Using the pulsed-laser-ablation technique, we successfully grew ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{\mathrm{O}}_{7−δ}$ thin films with $c$-axis orientation perpendicular to the film surface. X-ray diffraction showed that the (00l) peaks can be well-indexed to the ${\mathrm{La}}_{3}{\mathrm{Ni}}_{2}{…
[Phys. Rev. Materials 8, 124801] Published Mon Dec 16, 2024
16 Dec 2024 at 11:00am
Breakdown of electron lone pair and insulator-to-metal transition in $\mathrm{Ti}{\mathrm{S}}_{3}$ under high pressure
by A. R. Atique Ulla, P. Modak, and Ashok K. Verma
Author(s): A. R. Atique Ulla, P. Modak, and Ashok K. Verma
Solid titanium trisulfide ($\mathrm{Ti}{\mathrm{S}}_{3}$), a layered semiconducting material, has attracted considerable attention in recent times because of its robust anisotropic optical and electronic properties, which opened tremendous application possibilities. In a recent experiment, it was ob…
[Phys. Rev. Materials 8, 124601] Published Fri Dec 13, 2024
13 Dec 2024 at 11:00am
Hydrostatic pressure effect on structural and transport properties of co-existing layered and disordered rock-salt phase of ${\mathrm{Li}}_{\mathrm{x}}{\mathrm{CoO}}_{2}$
by Thiagarajan Maran, Anil Jain, Muthukumaran Sundaramoorthy, Aditya Prasad Roy, Boby Joseph, Govindaraj Lingannan, Ashwin Mohan, Dipanshu Bansal, S. M. Yusuf, and Arumugam Sonachalam
Author(s): Thiagarajan Maran, Anil Jain, Muthukumaran Sundaramoorthy, Aditya Prasad Roy, Boby Joseph, Govindaraj Lingannan, Ashwin Mohan, Dipanshu Bansal, S. M. Yusuf, and Arumugam Sonachalam
It is widely believed that the origin of a significant cause of voltage and capacity fading observed in lithium (Li)-ion batteries is related to structural modifications occurring in the cathode material during the Li-ion insertion/deinsertion process. The Li-ion insertion/deinsertion mechanism and …
[Phys. Rev. Materials 8, 125401] Published Mon Dec 02, 2024
2 Dec 2024 at 11:00am
Pressure-induced structural and superconducting transitions in black arsenic
by Y. Y. Wu, L. Mu, Y. L. Zhang, D. Z. Dai, K. Meng, S. Y. Huang, X. Zhang, S. C. Huang, J. Chen, H. G. Yan, and S. Y. Li
Author(s): Y. Y. Wu, L. Mu, Y. L. Zhang, D. Z. Dai, K. Meng, S. Y. Huang, X. Zhang, S. C. Huang, J. Chen, H. G. Yan, and S. Y. Li
We report high-pressure Raman spectra and resistance measurements of black arsenic (b-As) up to 58 GPa, along with phonon density of states and enthalpy calculations for four reported arsenic phases up to 50 GPa. It is found that metastable b-As transforms into gray arsenic (g-As) phase at a critica…
[Phys. Rev. B 111, 064507] Published Wed Feb 12, 2025
12 Feb 2025 at 11:00am
In situ electrical conductivity measurement of saturated rocks at shallow crustal temperatures and pressures in an autoclave
by Chaoyi Xiao Shuangming Shan Heping Li Sen Lin Shengbin Li a Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People’s Republic of Chinab University of Chinese Academy of Sciences, Beijing, People’s Republic of China
Volume 45, Issue 1, March 2025, Page 57-66
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24 Dec 2024 at 7:38am
Temperature gradients in high pressure multi-anvil cell
by Takuya Moriguti Akira Yoneda Eiji Ito a Institute for Planetary Materials, Okayama University, Misasa, Tottori, Japanb Department of Earth and Space Science, Osaka University, Toyonaka, Osaka, Japan
Volume 45, Issue 1, March 2025, Page 1-16
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19 Dec 2024 at 1:29pm
Pressure-sensitive germanate glass-Li2GeO3, a multifunctional energy material: a theoretical study
by R. Zosiamliana L. Celestine Lalhriat Zuala B. Chettri Zodin Mawia G. Abdurakhmanov A. Laref Shalika R. Bhandari D. P. Rai a Physical Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl, Indiab Department of Physics, Mizoram University, Aizawl, Indiac Department of Physics, North-Eastern Hill University, Shillong, Indiad National University of Uzbekistan, Tashkent, Uzbekistane Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, Saudi Arabiaf Department of Physics, Bhairahawa Multiple Campus, Tribhuvan University, Rupandehi, Nepal
Volume 45, Issue 1, March 2025, Page 29-56
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25 Dec 2024 at 7:29am
High pressure behavior of incommensurately modulated nyerereite structure
by N. Bogdanov S. Rashchenko P. Gavryushkin V. Thomas D. Fursenko Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, Russia
Volume 45, Issue 1, March 2025, Page 67-78
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27 Dec 2024 at 8:15am
Crystalline state in a pressure region of proceeding amorphization of SnI4
by Kazuhiro Fuchizaki Hiroki Naruta Fumiya Sato Tomohiro Ohuchi Akio Suzuki a Department of Physics, Ehime University, Matsuyama, Japanb Graduate School of Science and Engineering, Ehime University, Matsuyama, Japanc Geodynamics Research Center, Ehime University, Matsuyama, Japand Department of Earth Science, Tohoku University, Sendai, Japan
Volume 45, Issue 1, March 2025, Page 90-107
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13 Jan 2025 at 12:09pm
High pressure Raman spectroscopy of boron-rich boron carbides up to 50 GPa
by Raimundas Sereika Seth Iwan Paul A. Baker Yogesh K. Vohra Department of Physics, University of Alabama at Birmingham, Birmingham, AL, USA
Volume 45, Issue 1, March 2025, Page 79-89
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6 Jan 2025 at 8:55am