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High Pressure Research
An International Journal
Volume 6, 1991 - Issue 5
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Original Articles

Hysteresis of ruby fluorescent line by pressure and annealing effect

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Pages 301-307 | Received 05 Feb 1991, Accepted 01 Apr 1991, Published online: 19 Aug 2006
 

Abstract

Accuracy of hydrostatic pressure measurement in a diamond-anvil cell (DAC) depends on the reproducibility of ruby RI fluorescent measurement. The larger scatter in R, fluorescent wavelength shift than the reproducibility of spectroscopic measurement was observed among appropriately mirror-finished ruby plates before setting up in DAC. The characteristics of the scatter changed after loading DAC up to pressure over hydrostatic limit. They vanished by annealing the ruby plates. These phenomena are presumably due to the appearance and disappearance of the residual stress in the ruby crystal. Such hysteresis of ruby fluorescent wavelength shift by pressure and its annealing effect are discussed.

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