Magnetic and optical properties of MgAlO-(NiZn)FeO thin films prepared by pulsed laser deposition.

Sci Technol Adv Mater

Department of Materials Science and Chemical Engineering, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8561, Japan.

Published: June 2011

Thin films composed of MgAlO and (NiZn)FeO ([MA(100-)-NZF] films) were grown on fused SiO substrates by pulsed laser deposition. X-ray diffraction measurements revealed that the films were polycrystalline, and that their lattice constant varied linearly with composition, indicating the formation of a solid solution. The film with =60 was paramagnetic and those with ≥ 70 were ferromagnetic. The films had a transparency above 75% in the visible range, but the transparency decreased with the value. The optical band gaps were 2.95, 2.55, 2.30 and 1.89 eV for =20, 40, 60, 80 and 100, respectively. The Faraday rotation angle increased with in the visible range, and the film with =70 exhibited a value of 2000 degrees cm at 570 nm, which is comparable to the rotation angle of YFeO. Owing to their high transparency, which extends into the visible range, the [MA(100-)-NZF] films can be used in novel magneto-optical devices.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5090471PMC
http://dx.doi.org/10.1088/1468-6996/12/3/034408DOI Listing

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