Giant electrocaloric effects in ferroelectric nanostructures with vortex domain structures
作者： B. Li , J. B. Wang , X. L. Zhong , F. Wang , Y. K. Zeng
DOI: 10.1039/C3RA41252K
关键词: Ferroelectricity 、 Nanostructure 、 Vorticity 、 Toroidal moment 、 Phase (matter) 、 Condensed matter physics 、 Electric field 、 Field (physics) 、 Materials science 、 Vortex 、 General chemistry 、 General Chemical Engineering
摘要: Electrocaloric effects of Bi4Ti3O12 (BIT) ferroelectric nanoparticles with vortex domain structures in a curled electric field are investigated using phase method. A large adiabatic temperature change (ΔT = 16.6 K) is observed the BIT vorticity vector ΔQ 0.15 mV A−2 at 620 °C. This ΔT attributed to toroidal moment which associated under field. These results indicate that nanostructures can be exploited for use solid state refrigeration.
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