[HTML][HTML] A breakthrough in pressure generation by a Kawai-type multi-anvil apparatus with tungsten carbide anvils

T Ishii, Z Liu, T Katsura - Engineering, 2019 - Elsevier
Expansion of the pressure range of Kawai-type multi-anvil presses (KMAPs) with tungsten
carbide (WC) anvils is called for, especially in the field of Earth science. However, no …

[PDF][PDF] Extreme conditions research using the large-volume press at the P61B endstation, PETRA III

R Farla, S Bhat, S Sonntag, A Chanyshev… - Journal of …, 2022 - journals.iucr.org
Penetrating, high-energy synchrotron X-rays are in strong demand, particularly for high-
pressure research in physics, chemistry and geosciences, and for materials engineering …

High pressure-temperature phase relations of basaltic crust up to mid-mantle conditions

T Ishii, N Miyajima, G Criniti, Q Hu, K Glazyrin… - Earth and Planetary …, 2022 - Elsevier
A substantial amount of subducted basaltic crusts may exist in the lower mantle. It features
distinct chemical composition from the peridotitic mantle and plays important roles in the …

Post-spinel-type AB2O4 high-pressure phases in geochemistry and materials science

M Akaogi, T Ishii, K Yamaura - Communications Chemistry, 2024 - nature.com
Post-spinel-type AB 2O4 compounds are stable at higher pressures than spinel phases.
These compounds have garnered much interest in geo-and materials science for their …

Sharp 660-km discontinuity controlled by extremely narrow binary post-spinel transition

T Ishii, R Huang, R Myhill, H Fei, I Koemets, Z Liu… - Nature …, 2019 - nature.com
The Earth's mantle is characterized by a sharp seismic discontinuity at a depth of 660 km
that can provide insights into deep mantle processes. The discontinuity occurs over only 2 …

[HTML][HTML] Ultrahigh Pressure Generation at High Temperatures in a Walker-Type Large-Volume Press and Multiple Applications

X Hou, Y Shang, L Chen, B Feng, Y Zhao, X Zhao… - Engineering, 2024 - Elsevier
Ultrahigh pressure generation at high temperatures is technologically challenging for large
sample volumes. In this study, we successfully generated pressures of 37.3–40.4 GPa at …

[HTML][HTML] High-pressure generation in the Kawai-type multianvil apparatus equipped with tungsten-carbide anvils and sintered-diamond anvils, and X-ray observation on CaSnO3 …

D Yamazaki, E Ito, T Yoshino… - Comptes …, 2019 - comptes-rendus.academie-sciences …
Résumé We extended the attainable pressure of the Kawai-type multianvil apparatus to 71.3
GPa and 120.3 GPa at room temperature by equip** it with tungsten carbide (WC) and …

Complete agreement of the post-spinel transition with the 660-km seismic discontinuity

T Ishii, R Huang, H Fei, I Koemets, Z Liu, F Maeda… - Scientific reports, 2018 - nature.com
The 660-km seismic discontinuity, which is a significant structure in the Earth's mantle, is
generally interpreted as the post-spinel transition, as indicated by the decomposition of …

[HTML][HTML] A new approach determining a phase transition boundary strictly following a definition of phase equilibrium: an example of the post-spinel transition in …

T Ishii, A Chanyshev, T Katsura - Minerals, 2022 - mdpi.com
The Clapeyron slope is the slope of a phase boundary in P–T space and is essential for
understanding mantle dynamics and evolution. The phase boundary is delineating instead …

Pressure Generation above 35GPa in a Walker-Type Large-Volume Press

YC Shang, FR Shen, XY Hou, LY Chen… - Chinese Physics …, 2020 - iopscience.iop.org
Pressure generation to a higher pressure range in a large-volume press (LVP) denotes our
ability to explore more functional materials and deeper Earth's interior. Pressure generated …