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Magneto-Optical Enhancement of Tbfeco/Al Films at Short Wavelength

Published online by Cambridge University Press:  26 February 2011

Kibong Song ,
Hiroshi Ito  and
Masahiko Naoe
Kibong Song
Affiliation:
Tokyo Institute of Technology, Department of physical Electronics, Tokyo 152, Japan
Hiroshi Ito
Affiliation:
Corporate R&d Laboratory, Pioneer Electronic corporate, Saitama 350-02, Japan
Masahiko Naoe
Affiliation:
Tokyo Institute of Technology, Department of physical Electronics, Tokyo 152, Japan
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Abstract

The bilayered films composed of magneto-optical(MO) amorphous Tb-Fe-Co alloy and reflective Al layers were deposited successively on glass slide substrates without plasma exposure by using the facing targets sputtering system. The specimen films with the thickness of MO layer tMO below 5 nm showed apparent perpendicular magnetic anisotropy constant Ku of 2 to 3×106 erg/cm3 and rectangular Kerr loop. The specimen film with tMO of 14 nm took the Kerr rotation angle θk as large as about 0.36 degree, at the wavelength λ as short as about 400 nm. These values of θK is considerably larger than those of the bilayered films in the conventional MO media. Normally, the bilayered films with tMO above 50 nm took θK of about 0.25 degree at θK of 400 nm.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 231: Symposium S – Magnetic Surfaces, Thin Films and Multilayers , 1991 , 491
Copyright
Copyright © Materials Research Society 1992

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