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Magneto-optical measurement of anisotropy energy constant(s) for amorphous rare earth, transition metal alloys

Journal Article · · IEEE Trans. Magn.; (United States)
DOI:https://doi.org/10.1109/20.92141· OSTI ID:6052452

Optical investigation of magneto-optical films is complementary to conventional torque and VSM magnetometry. In the authors' laboratory, they are now measuring anisotropy energy constants of RE-TM thin films at temperatures from ambient to 150/sup 0/C. An in-plane magnetic field (up to 16.5 KOe) is applied to a saturated sample with perpendicular magnetization. The movement away from the perpendicular direction is monitored using the polar Kerr effect. At the HeNe wavelength, the Kerr effect is principally due to the top 500 angstroms of the transition metal subnetwork in the films.

Research Organization:
0880000
OSTI ID:
6052452
Journal Information:
IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. 24:6; ISSN IEMGA
Country of Publication:
United States
Language:
English