DOI: 10.1029/gl007i009p00709. Lower mantle phase transitions may generally have negative pressure‐temperature slopes

Lower mantle phase transitions may generally have negative pressure‐temperature slopes

10.1029/gl007i009p00709

Crossref journal-article

American Geophysical Union (AGU)

Geophysical Research Letters (13)

Abstract

Phase transitions in oxides at pressures above about 150 kbar may commonly have negative pressure‐temperature slopes. The causes of the higher entropies of denser phases include low frequency vibrations of small atoms in sites having high coordination number and long metal‐oxygen distances, decrease in directional bonding, positional disorder and possible solid‐electrolyte behavior, and semiconductor‐metal and metal‐metal transitions.

Bibliography

Navrotsky, A. (1980). Lower mantle phase transitions may generally have negative pressureâtemperature slopes. Geophysical Research Letters, 7(9), 709â711. Portico.

Authors 1

Alexandra Navrotsky (first)

References 31 Referenced 83

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Dates

Type	When
Created	17 years, 6 months ago (Feb. 6, 2008, 3:23 p.m.)
Deposited	1 year, 11 months ago (Sept. 22, 2023, 7:54 a.m.)
Indexed	3 weeks ago (Aug. 2, 2025, 1:10 a.m.)
Issued	44 years, 11 months ago (Sept. 1, 1980)
Published	44 years, 11 months ago (Sept. 1, 1980)
Published Online	12 years, 8 months ago (Dec. 7, 2012)
Published Print	44 years, 11 months ago (Sept. 1, 1980)

Funders 0

None

BibTeX

@article{Navrotsky_1980, title={Lower mantle phase transitions may generally have negative pressure‐temperature slopes}, volume={7}, ISSN={1944-8007}, url={http://dx.doi.org/10.1029/gl007i009p00709}, DOI={10.1029/gl007i009p00709}, number={9}, journal={Geophysical Research Letters}, publisher={American Geophysical Union (AGU)}, author={Navrotsky, Alexandra}, year={1980}, month=sep, pages={709–711} }

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