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A New Model of Ferroelectric Phase Transition with Neglectable Tunneling Effect |
| Hong-Mei Yin1,2, Heng-Wei Zhou2, Yi-Neng Huang1,2** |
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
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| Cite this article: |
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Hong-Mei Yin, Heng-Wei Zhou, Yi-Neng Huang 2019 Chin. Phys. Lett. 36 070501 |
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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.
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Received: 12 February 2019
Published: 20 June 2019
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| PACS: |
05.70.Fh
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(Phase transitions: general studies)
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77.80.B-
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(Phase transitions and Curie point)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 11664042. |
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