magnetocaloric effect and its modulation by electric field in La<sub>0.325</sub>Pr<sub>0.3</sub>Ca<sub>0.375</sub>MnO<sub>3</sub> film grown on PMN-PT
POSTER
Abstract
We have investigated the magnetocaloric effect(MCE) and its modulation by electric field in La0.325Pr0.3Ca0.375MnO3 (LPCMO) films epitaxially grown on (011)-oriented PMN-PT substrates. As a typical perovskite manganite with phase separation, the LPCMO bulk shows a considerable MCE, but the MCE of the LPCMO films have never been investigated. We found that the LPCMO films exhibit an inverse magnetic entropy change below 25K and an normal magnetic entropy change above 25K over a wide temperature range. The evaluated refrigeration capacity of 0-5T in the present film is about 443J/kg, which is larger than that of other films such as Ni-Mn-Sn film. A modulation of magnetization by electric field has been observed in the temeprature dependent and magnetic field dependent curves. As a result, enhanced magnetic entropy change and refrigeration capacity by about 4% under an electric field of 6 kV/cm has been demonstrated.
*This work was supported by the National Key Research and Development Program of China (Grant No. 2017YFB0702702), the National Natural Sciences Foundaion of China (Grant No.51531008 and 51590880)
Presenters
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Kaiming Qiao
- State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences
- the institute of physics
- Institute of Physics, Chinese Academy of Scienes