Abstract
Recent experimental developments on the electric field effect on magnetism in metallic magnetic materials are reviewed. The change in the electron density at the surface of metallic ultra-thin magnets by the application of an electric field results in modulations of the Curie temperature, magnetic moment, magnetic anisotropy, and domain wall velocity. The study focused on this paper is the electric field effect on the Curie temperature (magnetic phase transition) in Pt/Co ultra-thin film systems. Electric field modifications of the magnetic moment induced by ferromagnetic proximity effects in Pd, which is usually a nonmagnetic element, are also discussed.
Highlights
Magnets are often needed in modern industry because they have spontaneous magnetization
The electric field control of the Curie temperature [3], coercivity [4], magnetization direction [5, 6], domain wall motion [Yamanouchi_JJAP], and magnetic moment [7] has been experimentally demonstrated using ferromagnetic semiconductors, in which the magnetic property is a function of a carrier concentration that can be modulated by the application of an electric field
The author found that the magnetic anisotropy and the ferromagnetism itself is electrically switchable around room temperature in a perpendicularly magnetized ∼2 ML of Co ultrathin film deposited on a Pt underlayer
Summary
Recent experimental developments on the electric field effect on magnetism in metallic magnetic materials are reviewed. The change in the electron density at the surface of metallic ultra-thin magnets by the application of an electric field results in modulations of the Curie temperature, magnetic moment, magnetic anisotropy, and domain wall velocity. The study focused on this paper is the electric field effect on the Curie temperature (magnetic phase transition) in Pt/Co ultra-thin film systems. Electric field modifications of the magnetic moment induced by ferromagnetic proximity effects in Pd, which is usually a nonmagnetic element, are discussed. Reviewed by: Byungchan Han, Daegu Gyeongbuk Institute of Science and Technology, South Korea Aurelien Manchon, King Abdullah University of Science and Technology, Saudi Arabia. Specialty section: This article was submitted to Condensed Matter Physics, a section of the journal Frontiers in Physics
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