Title :
Magnetization property of Tb/Co multilayered films
Author :
Nawate, M. ; Morikawa, T. ; Tsunashima, S. ; Uchiyama, S.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
Multilayered films composed of rather thick Tb and Co layers, ranging from 50 Å to 150 Å, showed a change of magnetization process at low temperature (around 120 K), as reflected in the magnetization curve. The coercivity becomes very small and the saturation magnetization is very hard. Tb and Co moments in these multilayers are thought to be in the macroscopically ferrimagnetic state, being parallel to the same type moment and antiparallel with respect to the other. The behaviour of the Tb moment is dominant in the magnetization process. The multilayered films also showed exchange anisotropy at low temperature
Keywords :
Auger effect; X-ray diffraction examination of materials; cobalt; coercive force; ferrimagnetic properties of substances; magnetic anisotropy; magnetic moments; magnetisation; spectrochemical analysis; sputtered coatings; terbium; 50 to 150 angstroms; Auger electron spectra; RF magnetron sputtering; Tb-Co multilayered films; X-ray diffraction; chemical analysis; coercivity; exchange anisotropy; macroscopically ferrimagnetic state; magnetic moments; magnetization process; saturation magnetization; vacuum evaporation system; vibrating sample magnetometer; Anisotropic magnetoresistance; Coercive force; Ferrimagnetic films; Ferrimagnetic materials; Magnetic multilayers; Magnetic properties; Magnetization processes; Optical films; Saturation magnetization; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
