학술논문
Exchange bias effect in polycrystalline Bi0.5 Sr0.5 Fe0.5 Cr0.5 O3 bulk.
Document Type
Article
Author
Source
Subject
*SUPERPARAMAGNETIC materials
*MAGNETIC properties
*COOLING
*EXCHANGE bias
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Language
ISSN
2045-2322
Abstract
Bulk Bi0.5Sr0.5Fe0.5Cr0.5O3 (BSFCO) is a new compound comprising the R3c structure. The structural, magnetic property and exchange bias (EB) details are investigated. The material was in the super-paramagnetic (SP) state at room temperature. Exchange bias usually occurs at the boundary between different magnetic states after field cooling (HFC) acts on the sample. Here the result shows that changing HFC from 1 to 6 T reduces the HEB value by 16% at 2 K at the same time. Meanwhile, HEB diminishes as the ferromagnetic layer thickness increases. The variation of (the thickness of ferromagnetic layer) tFM with the change of HFC leads to the tuning of HEB by HFC in BSFCO bulk. These effects are obviously different from the phenomenon seen in other oxide types. [ABSTRACT FROM AUTHOR]