| SPECIAL TOPI—International Conference on Nanoscience & Technology, China 2013 |
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Magnetic field control of ferroelectric polarization and magnetization of LiCu2O2 compound |
| Qi Yan (齐岩), Du An (杜安) |
| College of Sciences, Northeastern University, Shenyang 110819, China |
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Abstract A spin model of LiCu2O2 compound with ground state of ellipsoidal helical structure is adopted. Taking into account the interchain coupling and exchange anisotropy, we investigate the magnetoelectric properties in a rotating magnetic field and perform the Monte Carlo simulation on a two-dimensional lattice. A prominent anisotropic response is observed in both the magnetization curve and the polarization curve, qualitatively coinciding with the behaviors that are detected in the experiment. In addition, the influences of the magnetic field with various magnitudes on polarization are also explored and analyzed in detail. As the magnetic field increases, a much smoother polarization of angle dependence is exhibited, indicating the strong correlation between the magnetic and ferroelectric orders.
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Received: 04 September 2013
Revised: 02 December 2013
Accepted manuscript online:
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PACS:
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75.50.-y
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(Studies of specific magnetic materials)
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75.10.-b
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(General theory and models of magnetic ordering)
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75.10.Hk
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(Classical spin models)
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75.40.Cx
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(Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))
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| Fund: Project supported by the Academic Scholarship for Doctoral Candidates of China (Grant No. 10145201103), the Fundamental Research Funds for the Central Universities of China (Grant No. N110605002), and the Shenyang Applied Basic Research Foundation, China (Grant No. F12-277-1-78). |
Corresponding Authors:
Du An
E-mail: duanneu@163.com
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Cite this article:
Qi Yan (齐岩), Du An (杜安) Magnetic field control of ferroelectric polarization and magnetization of LiCu2O2 compound 2014 Chin. Phys. B 23 087502
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