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Springer Science and Business Media LLC Scientific Reports 13(1)
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    초록·키워드

    Bulk Bi<sub>0.5</sub>Sr<sub>0.5</sub>Fe<sub>0.5</sub>Cr<sub>0.5</sub>O<sub>3</sub> (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 (H<sub>FC</sub>) acts on the sample. Here the result shows that changing H<sub>FC</sub> from 1 to 6 T reduces the H<sub>EB</sub> value by 16% at 2 K at the same time. Meanwhile, H<sub>EB</sub> diminishes as the ferromagnetic layer thickness increases. The variation of (the thickness of ferromagnetic layer) t<sub>FM</sub> with the change of H<sub>FC</sub> leads to the tuning of H<sub>EB</sub> by H<sub>FC</sub> in BSFCO bulk. These effects are obviously different from the phenomenon seen in other oxide types.

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