Localized to Itinerant Electronic Transition in Perovskite Oxides
(Sprache: Englisch)
Interest in the transition metal oxides with perovskite related structures goes back to the 1950s when the sodium tungsten bronzes NaxWO3 were shown to be metallic [1 ], the system Lal_xSr~MnO3 was found to contain a ferromagnetic conductive phase [2], and...
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Interest in the transition metal oxides with perovskite related structures goes back to the 1950s when the sodium tungsten bronzes NaxWO3 were shown to be metallic [1 ], the system Lal_xSr~MnO3 was found to contain a ferromagnetic conductive phase [2], and La0.sSr0.sCoO3 was reported to be a ferromagnetic metal, but with a peculiar magnetization of 1.5 #a/Co atom [3]. Stoichiometric oxide perovskites have the generic formula AMO3 in which the A site is at the center of a simple cubic array of M sites; the oxide ions form (180 ° 4)) M O M bridges to give an MO3 array of corner shared MO6/2 octahedra and the larger A cations have twelvefold oxygen coordination. Mismatch between the A O and M O equilibrium bond lengths introduces internal stresses. A compressive stress on the MO3 array is accommodated by a lowering of the M O M bond angle from 180 ° to (180 ° 4)); a tensile stress on the M O M bonds is accommodated by the formation of hexagonal polytypes [4].
Inhaltsverzeichnis zu „Localized to Itinerant Electronic Transition in Perovskite Oxides “
- J.B. Goodenough: General Considerations- J.B. Goodenough, J.-S. Zhou: Transport Properties
- T. Egami: Local Atomic Structure of CMR Manganites and Related Oxides
- S.L. Cooper: Optical Spectroscopic Studies of Metal-Insulator Transitions in Perovskite-Related Oxides
Bibliographische Angaben
- Autoren: J. B. Goodenough , T. Egami , S. L. Cooper , J. -S. Zhou
- 2001, 239 Seiten, Maße: 16 x 24,1 cm, Gebunden, Englisch
- Herausgegeben:Goodenough, John B.;Mitarbeit:Cooper, S.L.; Egami, T.; Goodenough, J.B.; Zhou, J.-S.
- Herausgegeben: John B. Goodenough
- Verlag: Springer
- ISBN-10: 3540675221
- ISBN-13: 9783540675228
- Erscheinungsdatum: 26.02.2001
Sprache:
Englisch
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