Effects of oxygen vacancies on relaxation behavior of Mg-doped BaTiO3
- Authors
- Cha, SH[Cha, Seon Ho]; Han, YH[Han, Young Ho]
- Issue Date
- Oct-2006
- Publisher
- INST PURE APPLIED PHYSICS
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, v.45, no.10A, pp.7797 - 7800
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
- Volume
- 45
- Number
- 10A
- Start Page
- 7797
- End Page
- 7800
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/86715
- DOI
- 10.1143/JJAP.45.7797
- ISSN
- 0021-4922
- Abstract
- The effects of oxygen vacancy on the dielectric properties of Mg-doped BaTiO3 were studied as a function of frequency in the temperature range of 150-450 degrees C. In Ba(Ti1-xMgx)O3-x, the Curie point (T-c) shifted to lower temperatures as the Mg content (x) was increased. Dielectric loss (tan delta) peaks moved to higher frequencies with increasing Mg content (x) in the Ba(Ti1-xMgx)O3-x system (0.0005 <= x <= 0.01) at 250 degrees C, whose peaks appeared at 0.5-6.9kHz for x = 0.0005-0.01. Loss (tan delta) peaks also moved to higher frequencies with increasing temperature regardless of Mg content (x). The activation energy was estimated to be 0.46-0.53eV at 150-300 degrees C and 1.08-1.12eV at 350-450 degrees C. The activation energy at higher temperatures could be due to the extra energy required for the dissociation of the dipolar complex (Mg-Ti"-V-O(center dot center dot)) in addition to the dipolar motion of oxygen vacancies.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.