MAGNETO-OPTICAL PROPERTIES OF COMPOSITE FILMS OF MAGNETITE FINE PARTICLES SOLIDIFIED BY POLYVINYL ALCOHOL
- 1 January 1991
- journal article
- Published by The Magnetics Society of Japan in Journal of the Magnetics Society of Japan
- Vol. 15 (S_1_MORIS_) , S1_271-274
- https://doi.org/10.3379/jmsjmag.15.s1_271
Abstract
Magneto-optical properties of composite films of magnetite fine particles solidified by polyvinyl alcohol (PVA) were investigated. The films were formed by spin-coating a mixed solution of magnetite colloidal suspension and PVA dissolved in distilled water on glass substrates and dried at various temperatures from room temperature to 200°C. With elevating drying temperature, the Faraday rotation θF decreases, and the optical transmittance, conversely, increases. The θF-spectrum varies in a manner that θF increases with wavelength in the visible region, takes a maximum at about 700nm and decreases with wavelength in the near infrared region. The films in which magnetite particles are aligned in chain clusters along the film thickness, were prepared by applying a dc magnetic field during drying process. We observed the anisotropy of θF in these films.Keywords
This publication has 2 references indexed in Scilit:
- Preparation of bismuth-substituted yttrium iron garnet powders by the citrate gel processJournal of Applied Physics, 1991
- Magnetic anisotropy by ferromagnetic particles alignment in a magnetic fieldJournal of Applied Physics, 1990