作者: Yang Bai , Guangping Zheng , Sanqiang Shi
DOI: 10.1063/1.3430045
关键词: Analytical chemistry 、 Electric field 、 Lattice energy 、 Electrocaloric effect 、 Ferroelectric ceramics 、 Elastic energy 、 Polarization density 、 Dielectric 、 Materials science 、 Condensed matter physics 、 Pyroelectricity 、 Physics and Astronomy (miscellaneous)
摘要: The electrocaloric (EC) effect of BaTiO3 multilayer thick film structure was investigated by direct measurement and theoretical calculation. samples were prepared the tape-casting method, which had 180 dielectric layers with an average thickness 1.4 μm. thermodynamic calculation based on polarization-temperature curves predicted a peak heat adsorption 0.32 J/g at 80 °C under 176 kV/cm electric field. via differential scanning calorimeter showed much higher EC 0.91 same difference could result from different trends changes polarization lattice elastic energy ultrahigh