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考虑到序参量的量子饱和,从朗道相变理论出发,讨论了钛酸钡低温时的相变行为.饱和温度θs用来表征量子影响的程度,与重声子模影响相变的程度相联系.

参考文献

[1] 钟维烈.铁电物理学[M].北京:科学出版社,1998
[2] Hayward S A;Salje E K H.The Pressure-temperature Phase Diagram of BaTiO3:A Macroscopic Description of the Low-temperature Behavior[J].Journal of Physics:Condensed Matter,2002(14):L599-L604.
[3] Samara G A.[J].Ferroelectrics,1971(02):L277.
[4] Ishidate T;A Be S.[J].Physical Review Letters,1997(78):L2397.
[5] Perez-Mato JM.;Salje EKH. .Quantum fluctuations of order parameters in structural phase transitions and the pressure dependence of transition temperatures[J].Journal of Physics. Condensed Matter,2000(3):L29-L34.
[6] Hayward SA.;Salje EKH. .Low-temperature phase diagrams: non-linearities due to quantum mechanical saturation of order parameters[J].Journal of Physics. Condensed Matter,1998(6):1421-1430.
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