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Electronic structure and metal-semiconductor transition in Ba1−xKxBiO3 and BaBi1−xPbxO3

✍ Scribed by D. Nguyen Manh; D. Mayou; F. Cyrot-Lackmann


Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
462 KB
Volume
79
Category
Article
ISSN
0038-1098

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We present new results on the optical absorption of the family of compounds KxBa~ \_xBiO3 (KBB) and CsxKo.4\_xBao.6BiO3 (CKBB) (0 < x < 0.4 ) using powder methods. All cubic compounds of the KBB system (x >/0.3, Tc ~ 30 K) possess a broad nearinfrared (NIR) absorption band, which appears to evolve o