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Crystal Structures and Optical Properties of Transparent Ceramics Based on Complex Perovskite Ba(M 4+ ,B 1 2+ ,B 2 5+ )O 3 (M 4+ =Ti, Sn, Zr, Hf; B 1 2+ =Mg, Zn; B 2 5+ =Ta, Nb)
Author(s) -
Kintaka Yuji,
Kuretake Satoshi,
Tanaka Nobuhiko,
Kageyama Keisuke,
Takagi Hiroshi
Publication year - 2010
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2009.03538.x
Subject(s) - refractive index , crystal structure , perovskite (structure) , crystallography , materials science , analytical chemistry (journal) , ceramic , band gap , crystal (programming language) , chemistry , optoelectronics , chromatography , computer science , programming language , composite material
We investigated the crystal structures and optical properties of Ba(M,Mg,Ta)O 3 , Ba(M,Zn,Ta)O 3 , and Ba(M,Mg,Nb)O 3 (M=Ti, Sn, Zr, and Hf) transparent ceramics. Tetravalent cation substitution resulted in a reduction in the 1:2 order structure of the B‐site of the parent perovskites; this in turn led to an increase in the transmittance of the ceramics. There was an increase in the refractive index of Ba(Mg 1/3 Ta 2/3 )O 3 due to Ti, Zr, and Hf substitution at the B‐site; the refractive index was particularly high in the case of Ti substitution. Furthermore, Ti substitution resulted in a significant decrease in the Abbe number of Ba(Mg 1/3 Ta 2/3 )O 3 . The refractive index of the perovskites was calculated with high accuracy using the Gladstone–Dale relation. We hypothesize that the Abbe number of perovskites is dependent on its band‐gap energy.