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Your search keyword '"Jaswal, S. S."' showing total 227 results
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227 results on '"Jaswal, S. S."'

103. Magnetoelectric effect at the SrRuO3/BaTiO3 (001) interface: An ab initio study.

Author

Niranjan, Manish K., Burton, J. D., Velev, J. P., Jaswal, S. S., and Tsymbal, E. Y.

Subjects
FERROMAGNETIC materials, FERROELECTRIC crystals, DIELECTRIC relaxation, POLARIZATION of electromagnetic waves, INDUCED polarization
Abstract

Ferromagnet/ferroelectric interface materials have emerged as structures with strong magnetoelectric coupling that may exist due to unconventional physical mechanisms. Here we present a first-principles study of the magnetoelectric effect at the ferromagnet/ferroelectric SrRuO3/BaTiO3 (001) interface. We find that the exchange splitting of the spin-polarized band structure, and therefore the magnetization, at the interface can be altered substantially by reversal of the ferroelectric polarization in the BaTiO3. These magnetoelectric effects originate from the screening of polarization charges at the SrRuO3/BaTiO3 interface and are consistent with the Stoner model for itinerant magnetism. [ABSTRACT FROM AUTHOR]

Published
2009
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104. Tailoring magnetic anisotropy at the ferromagnetic/ferroelectric interface.

Author

Chun-Gang Duan, Velev, Julian P., Sabirianov, R. F., Mei, W. N., Jaswal, S. S., and Tsymbal, E. Y.

Subjects
INTERFACES (Physical sciences), ANISOTROPY, FERROMAGNETIC materials, FERROELECTRICITY, MAGNETIC films, THIN films
Abstract

It is predicted that magnetic anisotropy of a thin magnetic film may be affected by the polarization of a ferroelectric material. Using a Fe/BaTiO3 bilayer as a representative model and performing first-principles calculations, we demonstrate that a reversal of the electric polarization of BaTiO3 produces a sizable change in magnetic anisotropy energy of Fe films. Tailoring the magnetic anisotropy of a nanomagnet by an adjacent ferroelectric material may yield entirely new device concepts, such as electric-field controlled magnetic data storage. [ABSTRACT FROM AUTHOR]

Published
2008
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