Ultrahigh pressures

Jayaraman, Aiyasami (1986) Ultrahigh pressures Review of Scientific Instruments, 57 (6). pp. 1013-1031. ISSN 0034-6748

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Official URL: http://rsi.aip.org/resource/1/rsinak/v57/i6/p1013_...

Related URL: http://dx.doi.org/10.1063/1.1138654


This article reviews mainly the use of the diamond anvil cell (DAC) for ultrahigh-pressure generation (a few hundred GPa) and the various techniques employed in studying the high-pressure behavior of solids. A brief historical introduction to devices used in the prediamond-anvil era is presented in Sec. I. The basic principles of the modern DAC, ultrahigh-pressure generation, and pressure calibration are presented. Among the techniques used, x-ray diffraction, optical spectroscopy including Raman and Brillouin spectroscopy, microscopy, electrical resistance,and Mossbauer measurements, and positron annihilation studies with the DAC are reviewed. High-temperature-high-pressure (HT-HP) and low-temperature-high-pressure (LT-HP) generation in the DAC, and the problems associated with pressure calibration under these conditions are discussed. A brief section is devoted to the sintered diamond-tipped anvil apparatus, for it offers a very convenient way of studying resistance changes and superconductivity to 50-GPa pressure at normal and at liquid-He temperatures. In Sec. IV, Raman studies on solid H2 and solid N2 to about 150 GPa, p-v studies on Xe, CsI to 50 GPa, the metallization of CsI, and superconductivity of Si high-pressure polymorphs are presented. Present trends and future possibilities for ultrahigh-pressure research are briefly set out in Sec. V.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:very High Pressure; Pressure Effects; Reviews; Diagnostic Techniques; Calibration; Production; Diamonds; Pressurizing; Pressure Control; Solids
ID Code:13271
Deposited On:11 Nov 2010 08:16
Last Modified:11 Nov 2010 08:16

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