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Published on: August 15, 2018
Electric-Field-Adjustable Time-Dependent Magnetoelectric Response in Martensitic FeRh Alloy
Ignasi Fina1, Alberto Quintana2, Jessica Padilla-Pantoja3
1Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) , Campus UAB, Bellaterra, E-08193 Barcelona, Spain.
Abstract:
Steady or dynamic magnetoelectric response, selectable and adjustable by only varying the amplitude of the applied electric field, is found in a multiferroic FeRh/PMN-PT device. In-operando time-dependent structural, ferroelectric, and magnetoelectric characterizations provide evidence that, as in magnetic shape memory martensitic alloys, the observed distinctive magnetoelectric responses are related to the time-dependent relative abundance of antiferromagnetic-ferromagnetic phases in FeRh, unbalanced by voltage-controlled strain. This flexible magnetoelectric response can be exploited not only for energy-efficient memory operations but also in other applications, where multilevel and/or transient responses are required.
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