Title :
Magnetic and magneto-optical properties of Nd-Tb-Fe-Co vertically magnetized films
Author :
Suzuki, T. ; Lin, C.J. ; Bell, A.E.
Author_Institution :
Dept. of Appl. Phys., Tohoku Univ., Sendai, Japan
fDate :
11/1/1988 12:00:00 AM
Abstract :
A systematic study of magnetic and magnetooptical properties of Nd-Tb-Fe-Co films has been performed. It was found that substituting Tb for part of the Nd content is useful for improving the squareness of magnetization curves and also increases the easy-axis coercivity. However, the effect of the Tb addition is to reduce the Kerr rotation angle at wavelength shorter than 500 nm. The temperature dependence of coercivity obtained in fields up to 150 kOe indicates that the single ion model cannot fully account for the perpendicular anisotropy in an Nd-Fe-Co system
Keywords :
Kerr magneto-optical effect; cobalt alloys; coercive force; ferrimagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic thin films; magnetisation; magneto-optical recording; neodymium alloys; terbium alloys; Kerr rotation angle; Nd-Tb-Fe-Co; easy-axis coercivity; magnetisation curve squareness; magneto-optical properties; perpendicular anisotropy; single ion model; temperature dependence; vertically magnetized films; Amorphous magnetic materials; Coercive force; Magnetic films; Magnetic properties; Neodymium; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Sputtering; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
