D. Wang et al., MAGNETIC-PROPERTIES OF ND(FE,TI)12 AND ND(FE,TI)12NX FILMS OF PERPENDICULAR TEXTURE, Journal of applied physics, 75(10), 1994, pp. 6232-6234
Nd(Fe,Ti)12 and Nd(Fe,Ti)12Nx films textured with c axis perpendicular
to the film plane were synthesized by sputtering. For the Nd(Fe,Ti)12
films a spin reorientation took place at about 170 K. For the Nd(Fe,T
i)12Nx, films, the anisotropy field is about 85 kOe at room temperatur
e and 130 kOe at 5 K, corresponding to a coercivity of 2.7 and 12 kOe,
respectively. Initial magnetization curves show a behavior characteri
stic of nucleation type of magnetization reversal mechanism. Attempts
were made to fit the experimental data with Kronmuller's magnetization
reversal model. The results suggest that nucleation with extended sit
es is responsible for the reversal.