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=851170
(Accessed November 6, 2024)
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Bulk-Moduli Systematics in Oxides Including Superconductors
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Abstract
For oxides, including superconductors, we consider the systematics of the bulk-modulus/atomic-volume (B/Va) relationship. For nonsuperconducting oxides, the B-Va diagram shows that most oxides fall in three sets: (1) rocksalt crystal structure, AO; (2) perovskite crystal structure, ACO3; (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 Tl-O, higher B corresponds to higher Tc. Because the in-plane (CuO2-plane (CuO2-plane) compressibility probably varies little among these cuprates, the out-of-plane compressiblility 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 ,
Pub Type
Books
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Keywords
bulk modulus, elastic constants, oxide superconductors, oxides, superconductors
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Created January 5, 2001, Updated February 19, 2017