Description of texture for permanent magnets

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 Sm/sub 2/Fe/sub 17/N/sub x/ samples with varying degree of easy-axis alignment as well as Zn-bonded Sm/sub 2/Fe/sub 17/C/sub x/. 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 K/sub 1/K/sub 2/J/sub s/ 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 Sm/sub 2/Fe/sub 17/N/sub x/.>