In the theoretical framework of mean field approximation,the extended theory of the transverse ising model is adopted to explore the microscopic physical mechanism of the intrinsic correlation between the polariza-tion offset and pyroelectric properties of temperature-gradient ferroelectric materials.Research results show that the extreme value of polarization offset is closely related to the properties of the initial phase-transition gradient layer in materials.The extreme value of polarization offset and the peak value of pyroelectric coefficient always appear in pairs,and altering the properties of the initial phase-transition layer in temperature-gradient ferroelectric materials is a key factor in regulating polarization offset and improving the pyroelectric performance of materials.
Temperature gradientIntensity of polarizationPolarization offsetPyroelectricity
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