High-frequency nonreciprocal reflection from magnetic films with overlayers

Journal Article · Thu Nov 14 00:00:00 EST 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4829280· OSTI ID:22257787

Wang, Ying; Nie, Yan; Camley, R. E. ^[1]

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1. Center for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, Colorado Springs, Colorado 80918 (United States)

We perform a theoretical study of the nonreciprocal reflection of high-frequency microwave radiation from ferromagnetic films with thin overlayers. Reflection from metallic ferromagnetic films is always near unity and shows no nonreciprocity. In contrast, reflection from a structure which has a dielectric overlayer on top of a film composed of insulated ferromagnetic nanoparticles or nanostructures can show significant nonreciprocity in the 75–80 GHz frequency range, a very high value. This can be important for devices such as isolators or circulators.

• OSTI ID: 22257787
• Journal Information: Journal of Applied Physics, Vol. 114, Issue 18; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DIELECTRIC MATERIALS
EQUIPMENT
FILMS
FREQUENCY RANGE
LAYERS
MICROWAVE RADIATION
NANOSTRUCTURES
REFLECTION