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Bulk-Moduli Systematics in Oxides, Including Superconductors

Published

Author(s)

H M. Ledbetter, Sudook A. Kim

Abstract

For oxides, including superconductors, we consider the systematics fo the bulk-modulus/atomic-volume (B/Vα) relationship. For nonsuperconducting oxides, the B-Vα diagram shows that most oxides fall in three sets: (1) rocksalt crystal structure, AO; (2) perovskite crystal structure, ACOd3^; (3) transition-metal oxides ranging through stoichiometries of AO, A3O4. A2O. Seventeen oxide superconductors show a surprisingly narrow Va range and a relatively narrow range of B = 116 19 Gpa. B-Va slopes depart from expectations from a simple ionic-crystal model. Within a superconductor subgroup, for example, La-O or T1-O. higher B corresponds to higher Tc. Because the in-plane (CuO2-plane) compressibility probably varies little among these cuprates, the out-of-plane compressibility should correlate inversely with Tc.
Citation
Bulk-Moduli Systematics in Oxides, Including Superconductors
Volume
II
Publisher Info
Handbook of Elastic Properties of Solids, Fluids, and Gases ,

Keywords

bulk modulus, elastic constants, oxide superconductors, oxides, superconductors, superending critical temperature

Citation

Ledbetter, H. and Kim, S. (2001), Bulk-Moduli Systematics in Oxides, Including Superconductors, Handbook of Elastic Properties of Solids, Fluids, and Gases , , [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=851365 (Accessed July 15, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created January 1, 2001, Updated February 19, 2017