Premium
Simultaneous surface and bulk crystallization of Bi 1.5 ZnNb 1.5 O 7 ‐type pyrochlores and related crystals in glasses
Author(s) -
Shimamura Keisuke,
Honma Tsuyoshi,
Shinozaki Kenji,
Komatsu Takayuki
Publication year - 2018
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12343
Subject(s) - materials science , pyrochlore , crystallization , dielectric , phase (matter) , quenching (fluorescence) , analytical chemistry (journal) , mineralogy , crystallography , type (biology) , crystal (programming language) , chemical engineering , optics , optoelectronics , fluorescence , chemistry , engineering , ecology , physics , organic chemistry , chromatography , computer science , biology , programming language
New glasses based on the systems of Bi 2 O 3 ‐ZnO‐Nb 2 O 5 ‐B 2 O 3 and ‐GeO 2 were synthesized using a conventional melt‐quenching method, and the formation behavior of pyrochlore‐type Bi 1.5 ZnNb 1.5 O 7 crystals was examined to develop new dielectric glass‐ceramics. It was demonstrated that pyrochlore‐type Bi 1.5 ZnNb 1.5 O 7 crystals are formed in 15Bi 2 O 3 ‐20ZnO‐15Nb 2 O 5 ‐50B 2 O 3 glass, ie, pseudo‐binary Bi 1.5 ZnNb 1.5 O 7 ‐B 2 O 3 glass. The formation of a new crystalline phase consisting of mainly Bi 2 O 3 and Nb 2 O 5 was detected in 15Bi 2 O 3 ‐20ZnO‐15Nb 2 O 5 ‐50GeO 2 glass, in which a simultaneous crystallization of new crystals with different morphologies was found at the surface and in the inside of the glass. The crystallized sample of 21Bi 2 O 3 ‐28ZnO‐21Nb 2 O 5 ‐30GeO 2 glass exhibited the dielectric constant of ε r =91 at f = 100 kH z, suggesting a potential for optoelectronic device applications.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom