1 : 2 Long-range ordering and defect mechanism of WO3-doped perovskite Ba(Mg1/3Ta2/3)O-3
SCIE
SCOPUS
- Title
- 1 : 2 Long-range ordering and defect mechanism of WO3-doped perovskite Ba(Mg1/3Ta2/3)O-3
- Authors
- Kim, YK; Lee, KM; Jang, HM
- Date Issued
- 2000-10
- Publisher
- KLUWER ACADEMIC PUBL
- Abstract
- The nature of the B-site cation ordering and the associated defect process necessary to stabilize the ordered domains were investigated using the WO3-doped Ba(Mg1/3Ta2/3)O-3 (BMT) system as a typical example of Ba(B'B-1/3"(2/3))O-3-type complex perovskites. It was shown that only the 1 : 2 long-range ordering of the B-site cation existed in both undoped and WO3-doped BMT perovskites. The atomic defect mechanism associated with the stoichiometric 1 : 2 long-range ordering was systematically investigated. It is concluded that the substitution of W6+ for Ta5+ in the WO3-doped BMT enhances the degree of the 1 : 2 long-range ordering and produces the positively charged W-Ta(.) sites with a concomitant generation of tantalum vacancies (V-Ta''''') and mobile oxygen vacancies (V-O(..)) for the ionic charge compensation. (C) 2000 Kluwer Academic Publishers.
- Keywords
- PB(MG1/3NB2/3)O-3 RELAXOR FERROELECTRICS; MICROWAVE DIELECTRIC-PROPERTIES; RESONATOR MATERIALS; CERAMICS; BA(ZN1/3TA2/3)O3
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19875
- DOI
- 10.1023/A:1004861821045
- ISSN
- 0022-2461
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS SCIENCE, vol. 35, no. 19, page. 4885 - 4893, 2000-10
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