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Title: Integrated-fin gasket for palm cubic-anvil high pressure apparatus

We described an integrated-fin gasket technique for the palm cubic-anvil apparatus specialized for the high-pressure and low-temperature measurements. By using such a gasket made from the semi-sintered MgO ceramics and the tungsten-carbide anvils of 2.5 mm square top, we successfully generate pressures over 16 GPa at both room and cryogenic temperatures down to 0.5 K. We observed a pressure self-increment for this specific configuration and further characterized the thermally induced pressure variation by monitoring the antiferromagnetic transition temperature of chromium up to 12 GPa. In addition to enlarge the pressure capacity, such a modified gasket also improves greatly the surviving rate of electrical leads hanging the sample inside a Teflon capsule filled with the liquid pressure-transmitting medium. These improvements should be attributed to the reduced extrusion of gasket materials during the initial compression.
Authors:
 [1] ;  [2] ; ; ; ; ;  [1] ;  [3] ;  [4]
  1. Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581 (Japan)
  2. (China)
  3. Faculty of Science, University of Ryukyus, Senbaru, Nishihara, Okinawa 903-0213 (Japan)
  4. Graduate School of Science, University of Tokyo, 7-3-1, Hongo Bunkyo-Ku, Tokyo 113-0033 (Japan)
Publication Date:
OSTI Identifier:
22314280
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; CAPSULES; CERAMICS; CHROMIUM; COMPRESSION; EXTRUSION; GASKETS; MAGNESIUM OXIDES; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; PRESSURE RANGE MEGA PA 10-100; TEFLON; TEMPERATURE RANGE 0065-0273 K; TRANSITION TEMPERATURE; TUNGSTEN CARBIDES