Higher-order elastic properties of single crystalline corundum

Lee, Jung Mo and Baag, Chang-Eob and Jo, Sang Gyu (2006) Higher-order elastic properties of single crystalline corundum. Il nuovo cimento C, 29 (5). pp. 553-564. ISSN 1826-9885

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Abstract

Corundum is frequently used for high-pressure and high-temperature applications. Its second-order pressure derivatives are, however, not measurable. A static rigid-ion lattice model for corundum, utilizing exponential-type repulsive force, is developed. The lattice parameters are determined from measured data of the bulk modulus and C33. Using these lattice parameters first-order pressure derivatives of bulk modulus and C33 are computed and compared to measured values, respectively. The deviations do not exceed 33%. The second-order pressure derivatives of bulk modulus and C33 are predicted and the results come out positive. These are usually negative for oxide mineral of cubic structure.

Item Type: Article
Uncontrolled Keywords: Other topics in solid Earth physics
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia
Depositing User: Marina Spanti
Date Deposited: 19 Mar 2020 14:46
Last Modified: 19 Mar 2020 14:46
URI: http://eprints.bice.rm.cnr.it/id/eprint/16114

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