ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Dysprosium iron garnet Dy3Fe5O12 (DyIG) thin films have been synthesized by postoxidizing at a temperature Tox (400 °C〈Tox〈1100 °C) of rf sputtered amorphous Dy-Fe metallic films. The sputtering conditions strongly influence the growth, the composition and magnetic and magneto-optic properties of the oxidized films. Pure DyIG films, free of DyFeO3, are synthesized at Tox∼1000 °C. Magnetic and Faraday rotation (FR) experiments at three wavelengths (543.5, 632.8, and 1152 nm) were performed on DyIG films in the 4–300 K temperature range, as a function of magnetic field up to 20 kOe perpendicular to the film plane. Magnetization and FR data are in good agreement with results obtained on bulk DyIG materials. Temperature dependent coercivity is observed with a discontinuity in the vicinity of the compensation temperature (Tcomp∼225 K). The temperature variations of the spontaneous FR values for the three wavelengths are interpreted on the basis of contributions proportional to the magnetization of each sublattice.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.355474
