Magnetism of epitaxial Tb films on W(110) studied by spin-polarized low-energy electron microscopy

被引：6

作者：

Prieto, J. E. ^{[1
]}

Chen, Gong ^{[2
]}

Schmid, A. K. ^{[2
]}

de la Figuera, J. ^{[3
]}

机构：

[1] Univ Autonoma Madrid, IFIMAC, Dept Fis Mat Condensada, Ctr Microanal Mat, E-28049 Madrid, Spain

[2] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] CSIC, Inst Quim Fis Rocasolano, Madrid 28006, Spain

来源：

PHYSICAL REVIEW B | 2016年 / 94卷 / 17期

关键词：

GADOLINIUM; ANISOTROPY; GD;

D O I：

10.1103/PhysRevB.94.174445

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin epitaxial films of Tb metal were grown on a clean W(110) substrate in ultrahigh vacuum and studied in situ by low-energy electron microscopy. Annealed films present magnetic contrast in spin-polarized low-energy electron microscopy. The energy dependence of the electron reflectivity was determined and a maximum value of its spin asymmetry of about 1% was measured. The magnetization direction of the Tb films is in-plane. Upon raising the temperature, no change in the domain distribution is observed, while the asymmetry in the electron reflectivity decreases when approaching the critical temperature, following a power law similar to(1-T/TC)(beta) with a critical exponent beta of 0.39.

引用

页数：6

共 37 条

[1] MAGNETISM AND STRUCTURE OF ULTRATHIN GD FILMS [J].

ASPELMEIER, A ;

GERHARDTER, F ;

BABERSCHKE, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1994, 132 (1-3) :22-30

[2]

Bauer Ernst., 2014, Surface Microscopy with Low Energy Electrons

[3] Spin-polarized scanning tunneling microscopy and spectroscopy of ferromagnetic Dy(0001)/W(110) films [J].

Berbil-Bautista, L. ;

Krause, S. ;

Bode, M. ;

Wiesendanger, R. .

PHYSICAL REVIEW B, 2007, 76 (06)

[4] NEW DEVELOPMENTS IN HARD MAGNETIC-MATERIALS [J].

BUSCHOW, KHJ .

REPORTS ON PROGRESS IN PHYSICS, 1991, 54 (09) :1123-1213

[5]

DAVIS LE, 1978, HDB AUGER ELECT SPEC

[6] Micromagnetism in (001) magnetite by spin-polarized low-energy electron microscopy [J].

de la Figuera, Juan ;

Vergara, Lucia ;

N'Diaye, Alpha T. ;

Quesada, Adrian ;

Schmid, Andreas K. .

ULTRAMICROSCOPY, 2013, 130 :77-81

[7]

Dean J.A., 2001, Lange's Handbook of Chemistry, V15

[8] Electronic band structure and Fermi surface of ferromagnetic Tb:: Experiment and theory [J].

Doebrich, K. M. ;

Bihlmayer, G. ;

Starke, K. ;

Prieto, J. E. ;

Rossnagel, K. ;

Koh, H. ;

Rotenberg, E. ;

Bluegel, S. ;

Kaindl, G. .

PHYSICAL REVIEW B, 2007, 76 (03)

[9] A COMPACT ELECTRON-SPIN-POLARIZATION MANIPULATOR [J].

DUDEN, T ;

BAUER, E .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (04) :2861-2864

[10] NEUTRON-DIFFRACTION DETERMINATION OF CRITICAL EXPONENT BETA FOR N=4 SYSTEM HOLMIUM [J].

ECKERT, J ;

SHIRANE, G .

SOLID STATE COMMUNICATIONS, 1976, 19 (09) :911-912

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