期刊
IEEE MAGNETICS LETTERS
卷 2, 期 -, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMAG.2010.2100810
关键词
Coupled phenomena; magneto-electronics; electric control of magnetic anisotropy
资金
- U.S. Army Research Office [W911NF-08-1-0125]
- Air Force Office of Scientific Research [FA9550-09-1-0677]
- Swiss National Science Foundation (SNF) [PBNEP2-124323]
The ferromagnetic properties of a 35 nm polycrystalline nickel thin film deposited on a single-crystal, optical, ferroelectric lithium niobate substrate are magnetoelectrically tunable. The coercive field of the nickel film, which has low magnetocrystalline anisotropy and appropriate magnetoelasticity, changes by about 80% owing to the anisotropic strain produced by the substrate. In addition, mechanical strain changes the coercive field by about 260% and increases the normalized remanence M-r/M-s from 0.3 to 1.0. This giant tunability would be achievable by combining polycrystalline Ni thin film with a ferroelectric substrate having large anisotropic piezoelectric coefficients.
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