Title :
Contribution of the crystalline phase Fe100-xSix to the temperature dependence of magnetic properties of FINEMET-type alloys
Author :
Turtelli, R.S. ; Duong, V.H. ; Grössinger, R. ; Schwetz, M. ; Ferrara, E. ; Pillmayr, N.
Author_Institution :
Inst. fur Experimentalphys., Tech. Univ. Wien, Austria
fDate :
3/1/2000 12:00:00 AM
Abstract :
The temperature dependence of the hysteresis loop, saturation magnetization, and saturation magnetostriction of rapidly quenched ribbons of the compositions Fe100-xSix (x=12.1, 13.8, 20.0) and of FINEMET-type material with compositions Fe73.6 Cu1Nb3Si13.5B9 Fe73.5Cu1Nb3Si16.5B6 were measured between room temperature and 400°C. This paper analyzes the temperature dependence of the saturation magnetostriction and the saturation magnetization of the FINEMET ribbons after various heat treatments, assuming a superposition of the properties of the nanocrystalline Fe-Si and of the remaining amorphous phase. The behavior of the coercivity of Fe-Si prepared by rapid solidification follows roughly that of the (absolute value) of the magnetostriction. The Curie temperature of the remaining amorphous phase is enhanced
Keywords :
Curie temperature; amorphous magnetic materials; boron alloys; coercive force; copper alloys; heat treatment; iron alloys; magnetic hysteresis; magnetostriction; metallic glasses; niobium alloys; rapid solidification; silicon alloys; 20 to 400 degC; Curie temperature; FINEMET-type alloys; Fe73.5Cu1Nb3Si16.5B 6; Fe73.6Cu1Nb3Si13.5B 9; amorphous phase; coercivity; crystalline phase; heat treatment; hysteresis loop; rapid solidification; rapidly quenched ribbons; saturation magnetization; saturation magnetostriction; temperature dependence; Amorphous materials; Crystallization; Hysteresis; Iron; Magnetic materials; Magnetostriction; Niobium; Saturation magnetization; Temperature dependence; Temperature measurement;
Journal_Title :
Magnetics, IEEE Transactions on
