Reversal of spontaneous magnetization and spontaneous exchange bias for Sm1−xYxCrO3: The effect of Y doping

We report the crystal and electronic structures and magnetic properties of non-magnetic Y3+ ion doped SmCrO3 crystals. Structural distortion and electronic structure variation are caused by cation disorder due to Y doping. Although the spin moment of Sm3+ is diluted by nonmagnetic Y ions, spin reori...

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Veröffentlicht in:Journal of applied physics 2017-11, Vol.122 (20)
Hauptverfasser: Zhang, Hongguang, Wang, Jianhua, Xie, Liang, Fu, Dexiang, Guo, Yanyan, Li, Yongtao
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Sprache:eng
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Zusammenfassung:We report the crystal and electronic structures and magnetic properties of non-magnetic Y3+ ion doped SmCrO3 crystals. Structural distortion and electronic structure variation are caused by cation disorder due to Y doping. Although the spin moment of Sm3+ is diluted by nonmagnetic Y ions, spin reorientation continues to exist, and the temperature-dependent magnetization reversal effect and the spontaneous exchange bias effect under zero field cooling are simultaneously induced below Neel temperature. Significantly, the method of doping promotes the achievement of temperature dependent tunable switching of magnetization and sign of a spontaneous exchange bias from positive to negative. Our work provides more tunable ways to the sign reversal of magnetization and exchange bias, which have potential application in designing magnetic random access memory devices, thermomagnetic switches and spin-valve devices.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4995459