Electric field control of nonvolatile four-state magnetization at room temperature
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- Electric field control of nonvolatile four-state magnetization at room temperature
- Chun, Sae Hwan; Chai, Yi Sheng; Jeon, Byung-Gu; Kim, Hyung Joon; Oh, Yoon Seok; Kim, Ingyu; Kim, Hanbit; Jeon, Byeong Jo; Haam, So Young; Park, Ju-Young; Lee, Suk Ho; Chung, Jae-Ho; Park, Jae-Hoon; Kim, Kee Hoon
- Electric field curves; Electric polarization; Electric-field control; Hexaferrites; Low magnetic fields; ME coefficient; Non-volatile; Rapid changes; Room temperature
- Issue Date
- AMER PHYSICAL SOC
- PHYSICAL REVIEW LETTERS, v.108, no.17, pp.177201 -
- We find the realization of large converse magnetoelectric (ME) effects at room temperature in a magnetoelectric hexaferrite Ba 0.52Sr 2.48Co 2Fe 24O 41 single crystal, in which rapid change of electric polarization in low magnetic fields (about 5 mT) is coined to a large ME susceptibility of 3200ps/m. The modulation of magnetization then reaches up to 0.62μ B/f.u. in an electric field of 1.14MV/m. We find further that four ME states induced by different ME poling exhibit unique, nonvolatile magnetization versus electric field curves, which can be approximately described by an effective free energy with a distinct set of ME coefficients. © 2012 American Physical Society.
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