Nonzero electric polarization and four magnetoelectric states at zero magnetic field in Cr-doped Y-type hexaferrite
Nonzero electric polarization and four magnetoelectric states at zero magnetic field in Cr-doped Y-type hexaferrite
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DOI：
10.1063/1.4989999
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发表时间：
2017-06
影响因子：
4
通讯作者：
Wang Yongqiang;Shile Zhang;W. K. Zhu;L. Ling;Lei Zhang;Z. Qu;L. Pi;W. Tong;M. Tian;Yuheng Zhang
中科院分区：
文献类型：
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作者：
Wang Yongqiang;Shile Zhang;W. K. Zhu;L. Ling;Lei Zhang;Z. Qu;L. Pi;W. Tong;M. Tian;Yuheng Zhang
本文报道了用磁性Cr3+离子部分取代Fe3+离子的Y型六元铁氧体Ba0.5Sr1.5Zn2Fe12O22(即BSZFCO)的磁电增强效应。直接磁电效应一直持续到250K，在75K时磁化率最高可达∼1309ps/m。更重要的是，在零磁场下显著的非零电极化和由不同初始极化磁场引起的四种磁电态，使其在磁电器件中具有独特的应用价值。响应周期性扫描磁场(电场)的非易失性行为证实了正(逆)磁电效应的稳定性。我们的研究提供了对BSZFCO的非平凡性质的洞察，这些性质在多铁性方面具有很好的应用前景。
We report here an enhanced magnetoelectric effect in a Y-type hexaferrite Ba0.5Sr1.5Zn2Fe12O22 with Fe3+ ions partially substituted by magnetic Cr3+ ions (i.e., BSZFCO). The direct magnetoelectric effect is persistent up to 250 K, with the maximal susceptibility of ∼1309 ps/m at 75 K. More importantly, the pronounced non-zero electric polarization at zero magnetic field and four magnetoelectric states induced by different initial poling fields make it quite unique to serve in a magnetoelectric device. The stability of the direct (inverse) magnetoelectric effect is confirmed by the nonvolatile behavior in response to the cyclically sweeping magnetic (electric) fields. Our studies provide an insight into the nontrivial properties of BSZFCO, which are promising for multiferroic applications.