Enhanced Co orbital moments in Co-rare-earth permanent-magnet films

被引：19

作者：

Keavney, DJ

Fullerton, EE

Li, DQ

Sowers, CH

Bader, SD

Goodman, K

Tobin, JG

Carr, R

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] Univ Calif Lawrence Livermore Natl Lab, Dept Chem & Mat Sci, Livermore, CA 94550 USA

[3] Stanford Synchrotron Radiat Lab, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.57.5291

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Soft x-ray magnetic circular dichroism (MCD) data were collected at the Co L edges from a series of epitaxial R-Co (R=Pr, Nd, Sm, Dy, and Ho) intermetallic compound films grown by sputter deposition. The Co orbital-to-spin moment ratios were extracted from the data using the MCD sum rules. An enhanced Co orbital moment, as compared to that of bulk hcp-Co, is seen in all but one of the films: The enhancement is dependent on both the average R-Co bond length and on the R species. These results suggest that a significant transition-metal (TM) orbital moment is the origin of the TM sublattice contribution to the magnetocrystalline anisotropy energy in R-TM compounds.

引用

页码：5291 / 5297

页数：7

共 29 条

[1] CO ENERGY AND MAGNETIZATION ANISOTROPIES IN RCO5 INTERMETALLICS BETWEEN 4.2-K AND 300-K [J].