Study of the magnetocrystalline anisotropy of YFe<sub>12-x</sub>Mo<sub>x</sub> and YFe<sub>12-x</sub>Mo<sub>x</sub>N<sub>y</sub> (x=1-3, y approximately=1)
Yi-Zhong Wang; Bo-Ping Hu; Lin Song; Kai-Ying Wang; Gui-Chuan Liu; Yi-Zhong Wang; San Huan Res. Lab., Acad. Sinica, Beijing, China; Bo-Ping Hu; San Huan Res. Lab., Acad. Sinica, Beijing, China; Lin Song; San Huan Res. Lab., Acad. Sinica, Beijing, China; Kai-Ying Wang; San Huan Res. Lab., Acad. Sinica, Beijing, China; Gui-Chuan Liu; San Huan Res. Lab., Acad. Sinica, Beijing, China
Журнал:
Journal of Physics: Condensed Matter
Дата:
1994-08-29
Аннотация:
The magnetocrystalline anisotropy of YFe<sub>12-x</sub>Mo<sub>x</sub> and YPe<sub>12-x</sub>Mo<sub>x</sub>N<sub>y</sub> (x=1-3, y approximately=1) have been investigated by X-ray diffraction and the singular point detection technique. The uniaxial anisotropy of the YFe<sub>12-x</sub>Mo<sub>x</sub> series decreases with increasing Mo<sub>x</sub> concentration with a clear turning point at about x=1.6. The anisotropy characteristic of the nitride YFe<sub>12-x</sub>Mo<sub>x</sub>N<sub>y</sub> changes into a canted-type anisotropy for x<1.5 and a planar anisotropy for x>or=1.5. The anisotropy reduction for YFe<sub>12-x</sub>Mo<sub>x</sub> is mainly due to the substitution of Mo<sub>x</sub> atoms on the 8i sites, while the further change in anisotropy for YFe<sub>12-x</sub>Mo<sub>x</sub>N<sub>y</sub> may be due to a change in the 3d orbital moment or to a change in crystal-field interaction by the interstitial N<sub>y</sub> atoms.
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