Sheng-Guo Lu, Dan-Dan Li, Xiong-Wei Lin, Xiao-Dong Jian, Xiao-Bo Zhao, Ying-Bang Yao, Tao Tao, Bo Liang. Influence of electric field on the phenomenological coefficient and electrocaloric strength in ferroelectrics [J]. Acta Physica Sinica, 2020, 69(12): 127701-1
- Acta Physica Sinica
- Vol. 69, Issue 12, 127701-1 (2020)
Fig. 1. (a) Polarization and (b) reciprocal of permittivity of BaTiO3 as a function of temperature at various external electric fields.
Fig. 2. 
derived from Fig. 1(a) as a function of electric field and temperature.
derived from 
Fig. 3. (a) Permittivity of P(VDF-TrFE) 55 mol%/45 mol% as a function of electric field and temperature; (b) reciprocal of permittivity as a function of temperature and electric field; (c)
as a function of electric field and linear fitting, and the solid line occurred is guided for observation.
as a function of electric field and linear fitting, and the solid line occurred is guided for observation. Fig. 4. (a) Reciprocal of permittivity of the (P(VDF-TrFE-CFE)) 69.7 mol%/30.3 mol%/6.05 mol% as a function of temperature and electric field; (b) the corresponding
as a function of electric field.
as a function of electric field. Fig. 5. (a) Reciprocal of permittivity of Ba0.85Ca0.05Sr0.1TiO3 ceramics as a function of temperature and electric field; (b) the corresponding
as a function of electric field.
as a function of electric field. Fig. 6. Electrocaloric strength (dT /dE ) of P(VDF-TrFE) 55 mol%/45 mol% copolymer as a function of temperature, electric field and frequency: (a) f = 0.1 kHz; (b) f = 1 kHz; (c) f = 10 kHz; (d) f = 100 kHz
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Table 1. Parameters of BaTiO3 used for theoretical simulation[15].
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