The Coesite‐Stishovite Transition in a laser‐heated diamond cell | Zendy

Serghiou G. | Zendy; Zerr A. | Zendy; Chudinovskikh L. | Zendy; Boehler R. | Zendy

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The Coesite‐Stishovite Transition in a laser‐heated diamond cell

Author(s) -

Serghiou G.,

Zerr A.,

Chudinovskikh L.,

Boehler R.

Publication year - 1995

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/94gl02692

Subject(s) - stishovite , coesite , raman spectroscopy , phase transition , materials science , diamond anvil cell , phase boundary , diamond , atmospheric temperature range , phase (matter) , analytical chemistry (journal) , mineralogy , argon , thermodynamics , geology , high pressure , chemistry , atomic physics , quartz , optics , physics , composite material , eclogite , paleontology , organic chemistry , chromatography , subduction , tectonics

The coesite‐stishovite phase boundary in the temperature range 2300–2630°C was examined in a CO 2 ‐laser heated diamond anvil cell using argon as a pressure medium. Phase identification was provided by Raman spectroscopy of the temperature quenched samples at pressure. Our results suggest a coesite‐stishovite phase boundary curve described by P(GPa) = 8.1 + 0.001T(°C) in good agreement with Yagi and Akimoto's (1976) estimate at lower temperatures. The slope of this curve is less than one half that determined recently by Zhang et al. [1993, 1994] in a multi‐anvil press.

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