Title :
Description of texture for permanent magnets
Author :
Müller, K.H. ; Eckert, D. ; Wendhausen, P.A.P. ; Handstein, A. ; Wirth, S. ; Wolf, M.
Author_Institution :
Inst. fur Festkorper und Werkstofforschung e.V., Dresden, Germany
fDate :
3/1/1994 12:00:00 AM
Abstract :
A least mean square procedure was used to fit five types of trial texture functions, each of them containing one fitting parameter, to demagnetization curves of Zn-bonded Sm2Fe17Nx samples with varying degree of easy-axis alignment as well as Zn-bonded Sm2Fe17Cx. The demagnetization curves were measured in the first quadrant of polarization-field plane, parallel and perpendicularly to the texture axis. The temperature dependence (above room temperature) of the intrinsic magnetic properties K1K2Js was determined for both materials. The sensitivity of the calculated anisotropy constants to the degree of easy-axis alignment turns out to be the best criterion to find out the correct texture function which can be described by a Gaussian density in the case of our Zn-bonded Sm2 Fe17Nx
Keywords :
demagnetisation; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; permanent magnets; samarium alloys; texture; Gaussian density; Sm2Fe17C; Sm2Fe17N; Zn-bonded Sm2Fe17Cx; Zn-bonded Sm2Fe17Nx samples; anisotropy constants; demagnetization curves; easy-axis alignment; intrinsic magnetic properties; least mean square procedure; permanent magnets; temperature dependence; texture; Anisotropic magnetoresistance; Curve fitting; Demagnetization; Iron; Magnetic materials; Magnetic properties; Permanent magnets; Polarization; Temperature dependence; Temperature sensors;
Journal_Title :
Magnetics, IEEE Transactions on
