Effect of chemical state and occupation site of RE (RE = Yb, Y, Eu, Sm, Nd) on crystal structure and optical property of BaCe_1-xRE_xO_3-δ —Analyses of origin of peculiar crystal structure and property of BaCe_1-xNd_xO_3-δ

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• 作者：Eiki Niwa^a ; ¹ ; Tomomi Hosaka^b ; Takahiro Onoe^b ; Misa Shimizu^b ; Yoshikiyo Hatakeyama^a ; Ken Judai^a ; ^b ; Fumito Fujishiro^c ; Takuya Hashimoto^a ; ^b ; ^{takuya@chs.nihon-u.ac.jp}
• 关键词：A. Oxide ; B. Optical property ; C. X-ray diffraction ; D. Crystal structure ; D. Defect
• 刊名：Materials Research Bulletin
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：87
• 期：Complete
• 页码：6-13
• 全文大小：2451 K
• 卷排序：87

文摘

Crystal structures of various BaCe1-xRExO3-δ (RE: rare earth) have been clarified. The structure varies by RE3+ substitution involving increase of δ except for RE = Nd. The unique crystal structure and thermal expansion were observed for BaCe1-xNdxO3-δ. Existence of Nd4+ can be an origin of the unique crystal structure and property. Partial Nd3+ mixing for Ba-site in BaCe1-xNdxO3-δ was proposed by optical spectra.