XMCD study of the anisotropy of nanometric Co clusters in insulating and metallic matrices

被引：6

作者：

Bartolome, F.

Luis, F.

Petroff, F.

Garcia, L. M.

Bartolome, J.

Cros, V.

Jaffres, H.

机构：

[1] Univ Zaragoza, CSIC, Fac Ciencias, ICMA,Dept Fis Mat Condensada, E-50009 Zaragoza, Spain

[2] CNRS, THALES, Unite Mixte Phys, F-91404 Orsay, France

[3] Univ Paris 11, F-91405 Orsay, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

magnetic nanoparticles; magnetic anisotropy; XMCD; orbital moment;

D O I：

10.1016/j.jmmm.2003.12.1079

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The orbital to spin magnetic moment ratio of Co clusters homogeneously dispersed in Al2O3 is found to be much larger than in bulk Co and inversely proportional to the cluster diameter. For the same size, covering the clusters with a Cu layer increases m(L)/m(S). An enhancement on m(L)/m(S) in the surface atoms is one order of magnitude more effective as a source of anisotropy than in the bulk. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：E1275 / E1276

页数：2

共 7 条

[1] X-RAY CIRCULAR-DICHROISM AND LOCAL MAGNETIC-FIELDS [J].

CARRA, P ;

THOLE, BT ;

ALTARELLI, M ;

WANG, XD .

PHYSICAL REVIEW LETTERS, 1993, 70 (05) :694-697

[2] EXPERIMENTAL CONFIRMATION OF THE X-RAY MAGNETIC CIRCULAR-DICHROISM SUM-RULES FOR IRON AND COBALT [J].

CHEN, CT ;

IDZERDA, YU ;

LIN, HJ ;

SMITH, NV ;

MEIGS, G ;

CHABAN, E ;

HO, GH ;

PELLEGRIN, E ;

SETTE, F .

PHYSICAL REVIEW LETTERS, 1995, 75 (01) :152-155

[3] Spin and orbital magnetization in self-assembled Co clusters on Au(111) [J].

Dürr, HA ;

Dhesi, SS ;

Dudzik, E ;

Knabben, D ;

van der Laan, G ;

Goedkoop, JB ;

Hillebrecht, FU .

PHYSICAL REVIEW B, 1999, 59 (02) :R701-R704

[4] Enhancement of the magnetic anisotropy of nanometer-sized Co clusters:: Influence of the surface and of interparticle interactions -: art. no. 094409 [J].

Luis, F ;

Torres, JM ;

García, LM ;

Bartolomé, J ;

Stankiewicz, J ;

Petroff, F ;

Fettar, F ;

Maurice, JL ;

Vaurès, A .

PHYSICAL REVIEW B, 2002, 65 (09) :1-10

[5] Magnetic relaxation of interacting Co clusters:: Crossover from two- to three-dimensional lattices -: art. no. 217205 [J].

Luis, F ;

Petroff, F ;

Torres, JM ;

García, LM ;

Bartolomé, J ;

Carrey, J ;

Vaurès, A .

PHYSICAL REVIEW LETTERS, 2002, 88 (21) :2172051-2172054

[6]

LUIS F, IN PRESS

[7] X-RAY CIRCULAR-DICHROISM AS A PROBE OF ORBITAL MAGNETIZATION [J].

THOLE, BT ;

CARRA, P ;

SETTE, F ;

VANDERLAAN, G .

PHYSICAL REVIEW LETTERS, 1992, 68 (12) :1943-1946

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