Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 470, Issue -, Pages 77-80Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2018.02.064
Keywords
Multiferroics; Composites; Magnetoelectric effect; Magnetocaloric effect
Funding
- 5 top 100 Russian Academic Excellence Project at the Immanuel Kant Baltic Federal University
- ITMO University [074-U01]
- project Phase transitions, magnetotransport, magnetocaloric, magnetoelectric phenomena in strongly correlated electron systems [0203-2016-0009]
- Global Energy Association [MGamma-2017/04/2]
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In the paper there are presented magnetic, magnetoelectric, and magnetocaloric properties of the Fe48Rh52-PZT bilayer multiferroic composite close to room temperature. The maximum of adiabatic temperature change as well as the large magnetoelectric ordering around the antiferromagnetic-magnetic phase transition temperature of 315K for a magnetic field change of 0.62T is demonstrated. The application of a voltage across the bilayer structure shifts the metamagnetic transition by similar to 4 K in cooling and by similar to 3 K in heating. The magnitude of the magnetoelectric and magnetocaloric effects depends on the strain/stress in the magnetic layer induced by the piezoelectric one as a result of applying electric field. Such a finding can be successfully employed for controlling of the magnetic properties of caloric materials. (C) 2018 Published by Elsevier B.V.
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