Hamad M.A.1, Hemeda O.M.2, Alamri H.R.3, Harb M.E.4, Mohamed A.M.5
1Basic Science Department, Higher Institute of Engineering and Technology, Alexandria, Egypt
2Physics Department, Faculty of Science, Tanta University, Tanta, Egypt
3Physics Department, Aljamoum University College, Umm Al-Qura University, Makkah, Saudi Arabia
4Department of Communications and Electronics Engineering, Higher Institute of Engineering and Technology, Alexandria, Egypt
5National Research Centre, Dokki, Cairo, Egypt
Email: m_hamad76@yahoo.com
Выставление онлайн: 10 февраля 2021 г.
The magnetocaloric effect (MCE) of BiFeO3 (BFO)|La0.7Sr0.3MnO3 (LSMO) thin films was investigated via phenomenological model. It is revealed that the values of magnetic entropy change, temperature range covering MCE, change of specific heat, and relative cooling power of BFO|LSMO films decrease dramatically with an increase of BFO. The simulation shows furthermore that these BFO|LSMO films have prospective importance in magnetic refrigerants over a wide temperature range, including cryogenic and room temperatures. The MCE parameters of BFO|LSMO films are significantly larger and comparable with some MCE ones of magnetic materials in previous works. Keywords: BiFeO3|La0.7Sr0.3MnO3, magnetocaloric effect, magnetic entropy change.
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