Anisotropy enhancement in Co granular multilayers by capping

被引：4

作者：

Bartolome, J. ^{[1
]}

Luis, F. ^{[1
]}

Garcia, L. M. ^{[1
]}

Bartolome, F. ^{[1
]}

Petroff, F. ^{[2
,3
]}

Deranlot, C. ^{[2
,3
]}

Wilhelm, F. ^{[4
]}

Rogalev, A. ^{[4
]}

Bencok, P. ^{[4
]}

Brookes, N. B. ^{[4
]}

机构：

[1] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain

[2] Univ Paris Sud, F-91405 Orsay, France

[3] CNRS, Unite Mixte Physique, F-91767 Palaiseau, France

[4] European Synchrotron Radiat Fac, F-38043 Grenoble, France

来源：

METASTABLE AND NANOSTRUCTURED MATERIALS III | 2008年 / 570卷

关键词：

fine-particle system; magnetic anisotropy; nanocrystaline material;

D O I：

10.4028/www.scientific.net/MSF.570.1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of capping with Cu, Au and Pt of an array of Co nanoparticles is revised. The magnetic surface anisotropy K-S was found to be the dominant contribution to the effective anisotropy K-eff of the particles. Recent X-ray Magnetic Circular Dichroism (XMCD) measurements show that there is hybridization between the 3d Co electrons and the d and 4p electrons of the capping metal. By comparison to the mechanisms which give rise to the surface anisotropy in thin films, it is argued that this hybridization governs the modification of K-S, and hence, of K-eff.

引用

页码：1 / +

页数：3

共 33 条

[1] Capping layer effects in the structure and composition of Co nanoparticle ultrathin films -: art. no. 032510 [J].

Arbiol, J ;

Peiró, F ;

Cornet, A ;

Clavero, C ;

Cebollada, A ;

Armelles, G ;

Huttel, Y .

APPLIED PHYSICS LETTERS, 2005, 86 (03) :1-3

[2] Magnetic properties of Co nanoparticle granular films capped with Pt [J].

Bartolome, J. ;

Garcia, L. M. ;

Bartolome, F. ;

Luis, F. ;

Petroff, F. ;

Deranlot, C. ;

Wilhelm, F. ;

Rogalev, A. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 316 (02) :E9-E12

[3]

Bartolomé J, 2005, PHYS MET METALLOGR+, V99, pS8

[4] Magnetic behaviour of thin films produced by depositing pre-formed Fe and Co nanoclusters [J].

Binns, C ;

Maher, MJ .

NEW JOURNAL OF PHYSICS, 2002, 4 :85.1-85.15

[5] Structure of cobalt cluster films obtained by sputter deposition on alumina [J].

Briático, J ;

Maurice, JL ;

Carrey, J ;

Imhoff, D ;

Petroff, F ;

Vaurès, A .

EUROPEAN PHYSICAL JOURNAL D, 1999, 9 (1-4) :517-521

[6] TIGHT-BINDING APPROACH TO THE ORBITAL MAGNETIC-MOMENT AND MAGNETOCRYSTALLINE ANISOTROPY OF TRANSITION-METAL MONOLAYERS [J].

BRUNO, P .

PHYSICAL REVIEW B, 1989, 39 (01) :865-868

[7] 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

[8] Magnetic assembled nanostructures from pure and mixed Co-based clusters [J].

Dupuis, V ;

Favre, L ;

Stanescu, S ;

Tuaillon-Combes, J ;

Bernstein, E ;

Perez, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (22) :S2231-S2240

[9] Theory of induced magnetic moments and x-ray magnetic circular dichroism in Co-Pt multilayers -: art. no. 094413 [J].

Ederer, C ;

Komelj, M ;

Fähnle, M ;

Schütz, G .

PHYSICAL REVIEW B, 2002, 66 (09) :944131-944138

[10] EXCHANGE-ANISOTROPY IN OXIDE PASSIVATED CO FINE PARTICLES [J].

GANGOPADHYAY, S ;

HADJIPANAYIS, GC ;

SORENSEN, CM ;

KLABUNDE, KJ .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (10) :6964-6966

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