Results 81 to 90 of about 2,542 (183)

High‐pressure and high‐temperature polymorphism of Na2CO3 up to 10 GPa

Acta Crystallographica Section B, Volume 82, Issue 4, Page 410-415, August 2026.
Two new high‐pressure phases, ϵ and ϵ‐II, observed during in situ experiments, complete the high‐pressure phase diagram of Na2CO3 and show that both the incommensurate γ phase and the ϵ phase are stable over a wider pressure–temperature range under mantle‐relevant conditions.We report two new high‐pressure polymorphs of sodium carbonate, ϵ and ϵ‐II ...
Benedetta Chrappan Soldavini, Marco Merlini, Chiara Mangano, Davide Comboni, Wilson Crichton, Michael Hanfland   +5 more
wiley   +1 more source

Mapping structure–property relationships in a 6‐oxo‐verdazyl radical by variable pressure crystallography and density functional theory

Acta Crystallographica Section B, Volume 82, Issue 4, Page 416-432, August 2026.
For the first time, the structural response to pressure of a verdazyl radical crystal has been studied. Computational modelling revealed changes in electronic and magnetic properties as a result of a structural phase transition.The response of the 1,5‐tolyl‐3‐phenyl‐6‐oxo‐verdazyl radical (pTolOV) to pressure in the crystalline state has been ...
James R. Brookes, Varshini J. Kumar, Isabelle M. Jones, Aston M. Summers, Stephanie A. Bird, Paul J. Low, Stephen A. Moggach, Dino Spagnoli   +7 more
wiley   +1 more source

Calcium Solubility of Bridgmanite in Subducted Basalt in Earth's Lower Mantle

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The calcium solubility in bridgmanite and the resulting abundance of davemaoite under lower‐mantle pressure‐temperature conditions have been under debate following a recent report of extensive calcium dissolution in bridgmanite. We experimentally investigated the calcium solubility in bridgmanite in a basaltic composition at pressures up to ...
Chengwei Zhang, Takashi Yoshino, Elias El Ghazaoui, Stella Chariton, Vitali B. Prakapenka, Luo Li, Yanyao Zhang, Jung‐Fu Lin   +7 more
wiley   +1 more source

Light Element Exsolution in Fe‐Si‐C‐(H) System: A Mechanism for Powering Mercury's Early Core Dynamo

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Mercury is one of the few terrestrial planets in the solar system with a magnetic field, yet the energy source to power its core dynamo remains unclear to date. Si, C, and possibly H are the top candidate light elements for its liquid core. Here, we showed experimentally that Si, C, and H in Fe‐Si‐C and Fe‐Si‐C‐H liquids share a simultaneous ...
Yuanjing Li, Liangliang Zhang, Fabin Pan, Xiaojing Lai, Xiang Wu, Feng Zhu   +5 more
wiley   +1 more source

A novel method for determining the resistivity of compressed superconducting materials

Matter and Radiation at Extremes
The measurement of resistivity in a compressed material within a diamond anvil cell presents significant challenges. The high-pressure experimental setup makes it difficult to directly measure the size changes induced by pressure in the three ...
Liling Sun, Qi Wu, Shu Cai, Yang Ding, Ho-kwang Mao   +4 more
doaj   +1 more source

Nitro-sonium nitrate (NO⁺NO₃ ^-) structure solution using in situ single-crystal X-ray diffraction in a diamond anvil cell. [PDF]

IUCrJ, 2021
Laniel D, Winkler B, Koemets E, Fedotenko T, Chariton S, Milman V, Glazyrin K, Prakapenka V, Dubrovinsky L, Dubrovinskaia N.   +9 more
europepmc   +1 more source

Synthesis and crystal structure of γ-SrNCN at 38 GPa

Acta Crystallographica Section E: Crystallographic Communications
γ-Strontium carbodiimide, γ-SrNCN, was synthesized from a mixture of strontium subnitride (Sr2N) and tetracyanoethylene (C6N4) at 38 (3) GPa in a laser-heated diamond anvil cell.
Lukas Brüning, Georg Krach, Pascal Lennert Jurzick, Wolfgang Schnick, Maxim Bykov   +4 more
doaj   +1 more source

Pressure-induced metallization and semiconductor PN transition in InAs

AIP Advances
Employing a diamond anvil cell, we measured resistivity and the Hall effect of InAs under pressures of 25 GPa, identifying key structural and electronic phase transitions at 3.8, 7.2, 10.3, and 14.7 GPa.
Yang Gao, Yushi Gu, Teng Zhuang, Lianhua Tian, Guangrui Gu, Hongguang Piao, Baojia Wu, Yonghao Han   +7 more
doaj   +1 more source

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). [PDF]

J Synchrotron Radiat, 2021
Liermann HP, Konôpková Z, Appel K, Prescher C, Schropp A, Cerantola V, Husband RJ, McHardy JD, McMahon MI, McWilliams RS, Pépin CM, Mainberger J, Roeper M, Berghäuser A, Damker H, Talkovski P, Foese M, Kujala N, Ball OB, Baron MA, Briggs R, Bykov M, Bykova E, Chantel J, Coleman AL, Cynn H, Dattelbaum D, Dresselhaus-Marais LE, Eggert JH, Ehm L, Evans WJ, Fiquet G, Frost M, Glazyrin K, Goncharov AF, Hwang H, Jenei Z, Kim JY, Langenhorst F, Lee Y, Makita M, Marquardt H, McBride EE, Merkel S, Morard G, O'Bannon EF, Otzen C, Pace EJ, Pelka A, Pigott JS, Prakapenka VB, Redmer R, Sanchez-Valle C, Schoelmerich M, Speziale S, Spiekermann G, Sturtevant BT, Toleikis S, Velisavljevic N, Wilke M, Yoo CS, Baehtz C, Zastrau U, Strohm C.   +63 more
europepmc   +1 more source

Mechanochemical synthesis of glycine oligomers in a virtual rotational diamond anvil cell. [PDF]

Chem Sci, 2020
Steele BA, Goldman N, Kuo IW, Kroonblawd MP.   +3 more
europepmc   +1 more source