1National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093 2Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters, College of Physical Science and Technology, Yili Normal University, Yining 835000
Abstract:Due to the obvious deviations of the existing theoretical models from the experimental results of ferroelectric phase transition, a new model is proposed on the basis of the coupling between spontaneous polarization and spontaneous strain in ferroelectrics. The spontaneous polarization and specific heat of ferroelectric phase transition predicted by the model are in better agreement with the corresponding data of triglyceride sulfate, a typical ferroelectric. In addition, the model predicts a new type of ferroelectric in which a phase transition and a phase-like transition coexist.
Ahart M, Somayazulu M, Cohen R E, Ganesh P, Dera P, Mao H, Hemley R J, Ren Y, Liermann P and Wu Z G 2008 Nature451 545
[4]
Horiuchi S, Tokunaga Y, Giovannetti G, Picozzi S, Itoh H, Shimano R, Kumai R and Tokura Y 2010 Nature463 789
[5]
Gu Z Q, Pandya S, Samanta A, Liu S, Xiao G, Meyers C J G, Damodaran A R, Barak H, Dasgupta A, Saremi S, Polemi A, Wu L Y, Podpirka A A, Will-Cole A, Hawley C J, Davies P K, York R A, Grinberg I, Martin L W and Spanier J E 2018 Nature560 622
Grinberg I, West D V, Torres M, Gou G, Stein D M, Wu L, Chen G, Gallo E M, Akbashev A R, Davies P K, Spanier J E and Rappe A M 2013 Nature503 509
[8]
Ikeda N, Ohsumi H, Ohwada K, Ishii K, Inami T, Kakurai K, Murakami Y, Yoshii K, Mori S, Horibe Y and Kitô H 2005 Nature436 1136
[9]
Mitsui T, Tatsuzaki I, Nakamura E and Ishibashi Y 1976 An introduction to the Physics of Ferroelectrics (New York: Gordon and Breach Science Publishers)