1993•Japanese Journal of Applied PhysicsOpen access
Local Structure of Y1-xCaxBa2Cu4O8 Determined by XAFS
Hironobu Maeda, Tamotsu Fujimoto, Setsuo Kashino, Yoshihiro Kubozono, Shūichi Emura, Takatoshi Murata, Fujio Izumi, Yu Yamada, Takehiko Matsumoto, Yasuharu Kodama
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Abstract
The local structure of YBa2Cu4O8 doped with Ca was studied by extended X-ray absorption fine structure (EXAFS) analysis. X-ray absorption measurements at the Ca K-edge indicate that Ca2+ ions substitute for Y3+ ions and are coordinated to eight oxide ions with a Ca–O distance of about 2.37 Å. The local structures around Ba and Cu atoms are also reported.
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