Properties of SiO2 in a high‐pressure fluorite structure phase

A. E. Carlsson; N. W. Ashcroft; A. R. Williams

doi:10.1029/GL011i006p00617

Properties of SiO₂ in a high‐pressure fluorite structure phase

A. E. Carlsson
, N. W. Ashcroft
, A. R. Williams

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The equation of state and volume‐dependent band gap are calculated for SiO₂ in the fluorite crystal structure. The equation of state is in considerable disagreement with recent shock magnetic compression results. Its form also suggests that if SiO₂ is present in the earth's core in uncombined form it can only be so in relatively small amounts. The band‐overlap transition occurs at a density four times that of quartz at zero pressure.

Original language	English
Pages (from-to)	617-619
Number of pages	3
Journal	Geophysical Research Letters
Volume	11
Issue number	6
DOIs	https://doi.org/10.1029/GL011i006p00617
State	Published - Jun 1984

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title = "Properties of SiO2 in a high‐pressure fluorite structure phase",

abstract = "The equation of state and volume‐dependent band gap are calculated for SiO2 in the fluorite crystal structure. The equation of state is in considerable disagreement with recent shock magnetic compression results. Its form also suggests that if SiO2 is present in the earth's core in uncombined form it can only be so in relatively small amounts. The band‐overlap transition occurs at a density four times that of quartz at zero pressure.",

author = "Carlsson, \{A. E.\} and Ashcroft, \{N. W.\} and Williams, \{A. R.\}",

year = "1984",

month = jun,

doi = "10.1029/GL011i006p00617",

language = "English",

volume = "11",

pages = "617--619",

journal = "Geophysical Research Letters",

issn = "0094-8276",

number = "6",

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T1 - Properties of SiO2 in a high‐pressure fluorite structure phase

AU - Carlsson, A. E.

AU - Ashcroft, N. W.

AU - Williams, A. R.

PY - 1984/6

Y1 - 1984/6

N2 - The equation of state and volume‐dependent band gap are calculated for SiO2 in the fluorite crystal structure. The equation of state is in considerable disagreement with recent shock magnetic compression results. Its form also suggests that if SiO2 is present in the earth's core in uncombined form it can only be so in relatively small amounts. The band‐overlap transition occurs at a density four times that of quartz at zero pressure.

AB - The equation of state and volume‐dependent band gap are calculated for SiO2 in the fluorite crystal structure. The equation of state is in considerable disagreement with recent shock magnetic compression results. Its form also suggests that if SiO2 is present in the earth's core in uncombined form it can only be so in relatively small amounts. The band‐overlap transition occurs at a density four times that of quartz at zero pressure.

UR - https://www.scopus.com/pages/publications/0021639472

U2 - 10.1029/GL011i006p00617

DO - 10.1029/GL011i006p00617

M3 - Article

AN - SCOPUS:0021639472

SN - 0094-8276

VL - 11

SP - 617

EP - 619

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 6

ER -

Properties of SiO₂ in a high‐pressure fluorite structure phase

Abstract

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