Journal
CERAMICS INTERNATIONAL
Volume 47, Issue 22, Pages 32445-32449Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.08.013
Keywords
Multiferroics; Y-type hexaferrite; Reversible polarization; Bound polarization
Categories
Funding
- National Natural Science Foundation of China [51502054]
- China Postdoctoral Science Foundation [2014M551236]
- Heilongjiang Province Postdoctoral Science Foundation [LBH-Z14083]
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In Y-type BaSrCo2Fe11AlO22 ceramics, the continuously reversed polarization induced by non-collinear conical magnetic structures can be categorized as reversible polarization and bound polarization. Saturated polarization increases linearly with the circulating magnetic field, but exponentially attenuates as the number of cycles increases.
The performance of continuously reversed polarization induced by non-collinear conical magnetic structures was investigated in Y-type BaSrCo2Fe11AlO22 ceramics. The electrical polarization induced by the non-collinear magnetic structures was categorized as reversible polarization and bound polarization. When the range of a circulating magnetic field H >= +/- 1.5 kOe, the P-H loops reached a saturated state and the saturated polarization increased linearly as the circulating magnetic field increased, which was ascribed to the bound polarization. During the continuous magnetic field cycle, a portion of the reversible polarization transformed into bound polarization and only the poling process can achieve inverse transformation. Therefore, the polarization attenuated exponentially as the number of the H cycles increased.
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