Electric control of magnetism at room temperature

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Wang, Liaoyu ; Wang, Dunhui ; Cao, Qingqi ; Zheng, Yuanxia ; Xuan, Haicheng ; Gao, Jinlong ; Du, Youwei (2012)
  • Publisher: Nature Publishing Group
  • Journal: Scientific Reports, volume 2 (issn: 2045-2322, eissn: 2045-2322)
  • Related identifiers: pmc: PMC3259679, doi: 10.1038/srep00223
  • Subject: Article

In the single-phase multiferroics, the coupling between electric polarization (P) and magnetization (M) would enable the magnetoelectric (ME) effect, namely M induced and modulated by E, and conversely P by H. Especially, the manipulation of magnetization by an electric field at room-temperature is of great importance in technological applications, such as new information storage technology, four-state logic device, magnetoelectric sensors, low-power magnetoelectric device and so on. Furthermore, it can reduce power consumption and realize device miniaturization, which is very useful for the practical applications. In an M-type hexaferrite SrCo2Ti2Fe8O19, large magnetization and electric polarization were observed simultaneously at room-temperature. Moreover, large effect of electric field-controlled magnetization was observed even without magnetic bias field. These results illuminate a promising potential to apply in magnetoelectric devices at room temperature and imply plentiful physics behind them.
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