Abstract
Synthesis and physical properties of new superconducting bismuthates, K1-xAxBiO3 (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), Tc was found to depend strongly on composition and was enhanced upon heterovalent 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 Tc in this class of materials.
| Original language | English |
|---|---|
| Pages (from-to) | 12-22 |
| Number of pages | 11 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 356 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2001 Jan 7 |
| Externally published | Yes |
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Keywords
- Bismuthates
- High-pressure technique
- Superconductivity
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Cite this
Extended range of superconducting bismuthates K1-xAxBiO3 (A = La, Bi, and Ca). / Khasanova, N. R.; Yoshida, K.; Yamamoto, Ayako; Tajima, S.
In: Physica C: Superconductivity and its Applications, Vol. 356, No. 1-2, 07.01.2001, p. 12-22.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Extended range of superconducting bismuthates K1-xAxBiO3 (A = La, Bi, and Ca)
AU - Khasanova, N. R.
AU - Yoshida, K.
AU - Yamamoto, Ayako
AU - Tajima, S.
PY - 2001/1/7
Y1 - 2001/1/7
N2 - Synthesis and physical properties of new superconducting bismuthates, K1-xAxBiO3 (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), Tc was found to depend strongly on composition and was enhanced upon heterovalent 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 Tc in this class of materials.
AB - Synthesis and physical properties of new superconducting bismuthates, K1-xAxBiO3 (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), Tc was found to depend strongly on composition and was enhanced upon heterovalent 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 Tc in this class of materials.
KW - Bismuthates
KW - High-pressure technique
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=0035819251&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035819251&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(01)00122-8
DO - 10.1016/S0921-4534(01)00122-8
M3 - Article
VL - 356
SP - 12
EP - 22
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -