Electric field effect on exchange interaction in ultrathin Co films with ionic liquids
Electric field effect on exchange interaction in ultrathin Co films with ionic liquids
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DOI：
10.7567/apex.11.063002
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发表时间：
2018-05
影响因子：
2.3
通讯作者：
M. Ishibashi;K. Yamada;Y. Shiota;F. Ando;T. Koyama;H. Kakizakai;H. Mizuno;K. Miwa;S. Ono;T. Moriyama;D. Chiba;T. Ono
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文献类型：
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作者：
M. Ishibashi;K. Yamada;Y. Shiota;F. Ando;T. Koyama;H. Kakizakai;H. Mizuno;K. Miwa;S. Ono;T. Moriyama;D. Chiba;T. Ono
磁场对磁特性的调制不仅具有实际应用的意义，而且具有重要的意义。在这项研究中，我们研究了电场对离子液体在Cr2 O3 Co薄膜中的交换相互作用的影响。交换耦合J的特征在于从直接磁化测量作为温度的函数，使用Pt/Al 2 O3 Co/MgO结构。电场对J的影响趋势与理论预测一致，并且通过使用离子液体形成双电层观察到了施加栅电压对J的较大变化。
Electric-field modulations of magnetic properties have been extensively studied not only for practical applications but also for fundamental interest. In this study, we investigated the electric field effect on the exchange interaction in ultrathin Co films with ionic liquids. The exchange coupling J was characterized from the direct magnetization measurement as a function of temperature using Pt/ultrathin Co/MgO structures. The trend of the electric field effect on J is in good agreement with that of the theoretical prediction, and a large change in J by applying a gate voltage was observed by forming an electric double layer using ionic liquids.