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Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

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Electric field control of nonvolatile four-state magnetization at room temperature

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Title
Electric field control of nonvolatile four-state magnetization at room temperature
Author
Chun, Sae HwanChai, Yi ShengJeon, Byung-GuKim, Hyung JoonOh, Yoon SeokKim, IngyuKim, HanbitJeon, Byeong JoHaam, So YoungPark, Ju-YoungLee, Suk HoChung, Jae-HoPark, Jae-HoonKim, Kee Hoon
Keywords
Electric field curves; Electric polarization; Electric-field control; Hexaferrites; Low magnetic fields; ME coefficient; Non-volatile; Rapid changes; Room temperature
Issue Date
2012-04
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.108, no.17, pp.177201 -
Abstract
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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DOI
10.1103/PhysRevLett.108.177201
ISSN
0031-9007
Appears in Collections:
PHY_Journal Papers
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