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Switching dynamics in ferroelectric superlattices
被引:19
|作者:
Chew, K. -H.
[1
]
Ong, L. -H.
[1
]
Iwata, M.
[2
]
机构:
[1] Univ Sains Malaysia, Sch Phys, Minden 11800, Penang, Malaysia
[2] Nagoya Inst Technol, Dept Engn Phys Elect & Mech, Grad Sch Engn, Nagoya, Aichi, Japan
关键词:
Ferroelectric;
Landau-Ginzburg;
Switching;
Superlattice;
POLARIZATION REVERSALS;
PHASE-TRANSITIONS;
D O I:
10.1016/j.cap.2010.11.058
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Dynamics of polarization switching in a superlattice, consisting of alternating ferroelectric and parelectric layers, is studied by the Landau Khalatnikov equation. The dependence of switching time on the dielectric stiffness of the paraelectric layer, interface coupling and layer thicknesses is examined in detail. The spatial distribution of polarizations at different time in switching is illustrated. The results are discussed with those obtained using the model as proposed by Qu et al. [B.D. Qu, W.L. Zhong and R.H. Prince, Phys. Rev. B 55, 11218 (1997)]. Our results show that the two models give a similar qualitative description of switching dynamics. (C) 2010 Elsevier B.V. All rights reserved.
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页码:755 / 761
页数:7
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