Abstract
Electric field (E-field) control of magnetism based on magnetoelectric coupling is one of the promising approaches for manipulating the magnetization with low power consumption. The evolution of magnetic domains under in-situ E-fields is significant for the practical applications in integrated micro/nano devices. Here, we report the vector analysis of the E-field-driven antiparallel magnetic domain evolution in FeCoSiB/PMN-PT(011) multiferroic heterostructures via in-situ quantitative magneto-optical Kerr microscope. It is demonstrated that the magnetic domains can be switched to both the 0° and 180° easy directions at the same time by E-fields, resulting in antiparallel magnetization distribution in ferromagnetic/ferroelectric heterostructures. This antiparallel magnetic domain evolution is attributed to energy minimization with the uniaxial strains by E-fields which can induce the rotation of domains no more than 90°. Moreover, domains can be driven along only one or both easy axis directions by reasonably selecting the initial magnetic domain distribution. The vector analysis of magnetic domain evolution can provide visual insights into the strain-mediated magnetoelectric effect, and promote the fundamental understanding of electrical regulation of magnetism.
Highlights
IntroductionThe efficient manipulation of magnetic domains in
The efficient manipulation of magnetic domains inJ Adv Ceram 2021, 10(4): 0–0 or the spin-polarized current, whose high energy dissipation impedes the development of high-density spintronic devices
Magnetic domain evolution with complex initial magnetization distribution has rarely been investigated by vector imaging techniques in strain-mediated multiferroic heterostructures, which would be useful in understanding the response processes of magnetic domains to electric field (E-field) and the development of practical magnetoelectric devices
Summary
The efficient manipulation of magnetic domains in. J Adv Ceram 2021, 10(4): 0–0 or the spin-polarized current, whose high energy dissipation impedes the development of high-density spintronic devices. Electric field (E-field), rather than electric current, has been proposed as an energy-efficient alternative to manipulate magnetization [7,8,9]. In consideration of the potential applications in micro/nano devices, recent attention has been turned toward the E-field manipulation of micromagnetic elements, such as magnetic domains [18,19,20,21]. Magnetic domain evolution with complex initial magnetization distribution has rarely been investigated by vector imaging techniques in strain-mediated multiferroic heterostructures, which would be useful in understanding the response processes of magnetic domains to E-fields and the development of practical magnetoelectric devices
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