Oxide perovskites

Pressure derivatives of the bulk and shear moduli

Hui-Chen Kung, S. Rigden

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The pressure derivatives of elastic moduli (partial differentialM/ partial differentialP; M=K(s) and G) for a suite of polycrystalline oxide perovskites (2 titanates, 1 stannate and 2 aluminates) have been measured up to 3 GPa using the ultrasonic interferometry method combined with a buffer rod technique. Two empirical systematic relationships (partial differentialG/partial differentialP vs K(s)/G and partial differentialK(s)/partial differentialP vs K(s) (M/p)(1/3)) have been used to investigate the elasticity systematics of this suite of perovskites and to estimate partial differentialM/partial differentialP of MgSiO3 perovskite. The pressure derivatives partial differentialG/partial differentialP and partial differentialK(s)/partial differentialP for this suite of perovskites scatter between well-defined linear trends for the rutile, rocksalt and spinel structures. The more diffuse trends observed for the perovskites might reflect greater flexibility in the response of its corner-connected octahedral framework structure to changing pressure. The pressure derivatives of the elastic moduli for MgSiO3 perovskite estimated by the 'perovskite bands' are partial differentialG/partial differentialP=1.6-2.2 and partial differentialK(S)/partial differentialP=3.9-4.2.

Original languageEnglish
Pages (from-to)234-241
Number of pages8
JournalPhysics and Chemistry of Minerals
Volume26
Issue number3
DOIs
Publication statusPublished - 1999 Feb 1

Fingerprint

bulk modulus
perovskite
shear modulus
Oxides
Elastic moduli
oxide
elastic modulus
Perovskite
Derivatives
rutile
interferometry
partial pressure
spinel
elasticity
Interferometry
Elasticity
Buffers
Ultrasonics
trend

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Geochemistry and Petrology

Cite this

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abstract = "The pressure derivatives of elastic moduli (partial differentialM/ partial differentialP; M=K(s) and G) for a suite of polycrystalline oxide perovskites (2 titanates, 1 stannate and 2 aluminates) have been measured up to 3 GPa using the ultrasonic interferometry method combined with a buffer rod technique. Two empirical systematic relationships (partial differentialG/partial differentialP vs K(s)/G and partial differentialK(s)/partial differentialP vs K(s) (M/p)(1/3)) have been used to investigate the elasticity systematics of this suite of perovskites and to estimate partial differentialM/partial differentialP of MgSiO3 perovskite. The pressure derivatives partial differentialG/partial differentialP and partial differentialK(s)/partial differentialP for this suite of perovskites scatter between well-defined linear trends for the rutile, rocksalt and spinel structures. The more diffuse trends observed for the perovskites might reflect greater flexibility in the response of its corner-connected octahedral framework structure to changing pressure. The pressure derivatives of the elastic moduli for MgSiO3 perovskite estimated by the 'perovskite bands' are partial differentialG/partial differentialP=1.6-2.2 and partial differentialK(S)/partial differentialP=3.9-4.2.",
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Oxide perovskites : Pressure derivatives of the bulk and shear moduli. / Kung, Hui-Chen; Rigden, S.

In: Physics and Chemistry of Minerals, Vol. 26, No. 3, 01.02.1999, p. 234-241.

Research output: Contribution to journalArticle

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