Chin. Phys. Lett.  1993, Vol. 10 Issue (9): 558-561    DOI:
Original Articles |
Surface Effects on Dielectric Susceptibility of a Semi-infinite Ferroelectric
QU Baodong;WANG Chunlei;ZHONG Weilie;WANG Zhonglie
Department of physics, Shandong University, Jinan 250100
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QU Baodong, WANG Chunlei, ZHONG Weilie et al  1993 Chin. Phys. Lett. 10 558-561
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Abstract The profile of susceptibility near the surface of a semi-infinite ferroelectric is calculated from Landau free energy. In surface ferroelectric phase, the susceptibility is reduced at surface for |δ| <<β and much enhanced for |δ| ~β Where δ and β are the extrapolation length and the coherent length respectively. In ferroelectric phase, the surface susceptibility is generally reduced for δ<0. But the curve is not monotonic, there is a minimum in the surface layer. For δ >0, the surface susceptibility is reduced for |δ| <<β and enhanced for δ~β. The curve has a maximum in the surface layer.


Keywords: 77.80.-e      65.40.-f     
Published: 01 September 1993
PACS:  77.80.-e (Ferroelectricity and antiferroelectricity)  
  65.40.-f  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y1993/V10/I9/0558
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