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Titolo:
Extended range of superconducting bismuthates K(1-x)A(x)BiO(3) (A = La, Bi, and Ca)
Autore:
Khasanova, NR; Yoshida, K; Yamamoto, A; Tajima, S;
Indirizzi:
ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan ISTEC Tokyo Japan 1350062 conduct Res Lab, Koto Ku, Tokyo 1350062, Japan
Titolo Testata:
PHYSICA C
fascicolo: 1-2, volume: 356, anno: 2001,
pagine: 12 - 22
SICI:
0921-4534(20010701)356:1-2<12:EROSBK>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRONIC-STRUCTURE; BA1-XKXBIO3 SYSTEM; CRYSTAL-STRUCTURE; O SYSTEM; BAPB1-XBIXO3; PHASE; BEHAVIOR;
Keywords:
superconductivity; bismuthates; high-pressure technique;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Khasanova, NR Moscow State Univ, Dept Chem, Moscow 119899, Russia Moscow State Univ Moscow Russia 119899 scow 119899, Russia
Citazione:
N.R. Khasanova et al., "Extended range of superconducting bismuthates K(1-x)A(x)BiO(3) (A = La, Bi, and Ca)", PHYSICA C, 356(1-2), 2001, pp. 12-22

Abstract

Synthesis and physical properties of new superconducting bismuthates, K(1-x)A(x)BiO(3) (A = Bi, La, and Ca), are reported. New compounds could only be prepared in a narrow range of composition, restricted by the A-site cation size, with cubic perovskite structure. For the first two systems (A = Bi,La), T-c was found to depend strongly on composition and was enhanced uponheterovalent substitution. The data obtained and comparison with known bismuthates show undoubtedly that band filling controlled by dopant concentration is a crucial parameter for variation of T-c in this class of materials. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 27/09/20 alle ore 12:28:50