Title :
Remanence enhancement and exchange coupling in PrCo/Co films
Author :
Liu, J.P. ; Liu, Y. ; Shan, Z.S. ; Sellmyer, D.J.
Author_Institution :
Center for Mater. Res. & Anal., Nebraska Univ., Lincoln, NE, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
PrCo/Co multilayer thin films have been prepared by sputtering. After heat treatment, high coercivity is developed and the remanence is enhanced for the insertion of the Co layers and the exchange coupling between the hard phase and the soft phase, which leads to high energy products of the composite magnets. The nanostructure of the films has been studied by TEM. It is found that the grain size of the films with high energy products is in the range from 10 to 25 nanometers
Keywords :
cobalt; cobalt alloys; coercive force; exchange interactions (electron); ferromagnetic materials; magnetic multilayers; nanostructured materials; praseodymium alloys; remanence; soft magnetic materials; sputtered coatings; transmission electron microscopy; 10 to 25 nm; PrCo-Co; PrCo/Co films; composite magnets; exchange coupling; grain size; hard phase; remanence enhancement; soft phase; sputtering; Chromium; Coercive force; Couplings; Heat treatment; Magnetic films; Magnetic materials; Magnetic multilayers; Remanence; Saturation magnetization; Sputtering;
Journal_Title :
Magnetics, IEEE Transactions on
