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Effects of oxygen vacancies on dielectric, electrical, and ferroelectric properties of Ba4Nd2Fe2Nb8O30 ceramics.
- Source :
-
Applied Physics Letters . 2/24/2014, Vol. 104 Issue 8, p1-5. 5p. 5 Graphs. - Publication Year :
- 2014
-
Abstract
- Effects of oxygen vacancies on the dielectric, electrical, and ferroelectric properties of Ba4Nd2Fe2Nb8O30 ceramics were investigated. A dielectric relaxation above Tc can be ascribed to the trap-controlled ac conduction around doubly ionized oxygen vacancies. The dc conductivity of the N2-annealed and O2-annealed samples is attributed to the long-range motion of the ..., and that of the as-sintered sample is considered to be governed by the electronic and oxygen-vacancy ionic mixed conduction mechanism. Low concentration and random distributed oxygen vacancies are propitious to the domain switching, while high concentration and allied oxygen defects hinder the domain-wall movement. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 104
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 95669873
- Full Text :
- https://doi.org/10.1063/1.4867069