کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1564265 | 999638 | 2006 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Surface and interface magnetic effects in CoNRhM clusters Surface and interface magnetic effects in CoNRhM clusters](/preview/png/1564265.png)
The spin moments, orbital moments, and magnetic anisotropy energy (MAE) of CoNRhM clusters having N ⩽ 321 atoms are investigated in the framework of a self-consistent electronic model Hamiltonian. Alloying Co clusters with Rh results in a significant enhancement of the magnetization per Co atom. This is mainly due to the spin moments 〈Siz〉 induced at the Rh atoms, which amount to about 20% of the moment per Co atom (〈Siz〉 = (0.2–0.3)μB), and to an enhancement of the orbital moments of the Co atoms at the Co–Rh interfaces. The calculated MAEs reveal remarkable changes in the easy axis as a function of concentration. The magnetic properties are analyzed from a local perspective. The role of the chemical arrangement of Co and Rh atoms within the cluster is discussed.
Journal: Computational Materials Science - Volume 35, Issue 3, March 2006, Pages 302–306