Magnetic coupling between Fe nanoislands induced by capping-layer magnetic polarization

被引：24

作者：

Navarro, E

Huttel, Y

Clavero, C

Cebollada, A

Armelles, G

机构：

[1] Univ Complutense, Fac Vet, Secc Dept Fis Aplicada 1, E-28040 Madrid, Spain

[2] CSIC, Ctr Nacl Microelect, IMM, Madrid 28760, Spain

[3] CSIC, ICMM, Madrid 28029, Spain

来源：

PHYSICAL REVIEW B | 2004年 / 69卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.69.224419

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study on the interislands interaction in granular Fe(110) thin films grown on c-sapphire as a function of the islands size and the capping layer induced magnetization is presented. Islands size (ranging from 10 to 50 nm in diameter) and physical contact between them can be monitored with the deposition time. While Al and MgO cappings do not modify the magnetic hysteresis loop of free islands surface, Pd and Pt give rise to a superparamagnetic-ferromagnetic transition in structures formed by small islands and a stronger interisland coupling in those formed by larger ferromagnetic islands. This improvement in the exchange interactions between islands is due to the induced magnetization of Pt and Pd localized at the interfaces between Pt-Fe(Pd-Fe) as evidenced by polar Kerr spectroscopy measurements and simulations.

引用

页码：224419 / 1

页数：6

共 40 条

[1] Induced ferromagnetism and anisotropy of Pt layers in Fe/Pt(001) multilayers [J].

Antel, WJ ;

Schwickert, MM ;

Lin, T ;

O'Brien, WL ;

Harp, GR .

PHYSICAL REVIEW B, 1999, 60 (18) :12933-12940

[2] Magneto-optical spectra of long range chemically ordered FePd(001) alloy films [J].

Armelles, G ;

Weller, D ;

Rellinghaus, B ;

Caro, P ;

Cebollada, A ;

Briones, F .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (09) :4449-4452

[3]

BAEK LG, 2003, PHYS REV B, V67

[4] EFFECT OF SUBMONOLAYER COVERAGE ON MAGNETIC-ANISOTROPY OF ULTRATHIN COBALT FILMS M/CO/AU(111) WITH M=AU, CU, PD [J].

BEAUVILLAIN, P ;

BOUNOUH, A ;

CHAPPERT, C ;

MEGY, R ;

OULDMAHFOUD, S ;

RENARD, JP ;

VEILLET, P ;

WELLER, D ;

CORNO, J .

JOURNAL OF APPLIED PHYSICS, 1994, 76 (10) :6078-6080

[5] Spin-resolved inverse photoemission from Pt/Fe(001) [J].

Bertacco, R ;

Ciccacci, F .

PHYSICAL REVIEW B, 1998, 57 (01) :96-99

[6] Influence of structural characteristics on magnetic properties in face-centered-tetragonal surface alloy of Fe/Pd(100) ultrathin films [J].

Boeglin, C ;

Bulou, H ;

Hommet, J ;

Le Cann, X ;

Magnan, H ;

Le Fèvre, P ;

Chandesris, D .

PHYSICAL REVIEW B, 1999, 60 (06) :4220-4230

[7]

BUSCHOW KHJ, 1988, FERROMAGNETIC MAT

[8]

CALLEJA JF, UNPUB

[9] ENHANCED MAGNETOOPTICAL KERR-EFFECT IN SPONTANEOUSLY ORDERED FEPT ALLOYS - QUANTITATIVE AGREEMENT BETWEEN THEORY AND EXPERIMENT [J].

CEBOLLADA, A ;

WELLER, D ;

STICHT, J ;

HARP, GR ;

FARROW, RFC ;

MARKS, RF ;

SAVOY, R ;

SCOTT, JC .

PHYSICAL REVIEW B, 1994, 50 (05) :3419-3422

[10] ENHANCED MAGNETIZATION OF NANOSCALE COLLOIDAL COBALT PARTICLES [J].

CHEN, JP ;

SORENSEN, CM ;

KLABUNDE, KJ ;

HADJIPANAYIS, GC .

PHYSICAL REVIEW B, 1995, 51 (17) :11527-11532

← 1 2 3 4 →