Strain-induced magneto-optical anisotropy in epitaxial hcp Co films

被引：23

作者：

Arregi, J. A. ^{[1
]}

Gonzalez-Diaz, J. B. ^{[1
]}

Idigoras, O. ^{[1
]}

Berger, A. ^{[1
]}

机构：

[1] CIC NanoGUNE Consolider, E-20018 Donostia San Sebastian, Spain

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 18期

关键词：

ORIENTATION DEPENDENCE; MAGNETIC-ANISOTROPY; FCC CO; CONSTANTS; FE; TRANSITION; ENERGY; IRON;

D O I：

10.1103/PhysRevB.92.184405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the existence and origin of magneto-optical anisotropy in epitaxial hcp Co films. Our results show that a significant magneto-optical anisotropy exists in our samples and, more importantly, they reveal that its amplitude is directly correlated with epitaxial strain. We find a linear coefficient of 16.8% magneto-optical anisotropy per every 1% epitaxial strain, which is in stark contrast to an isotropic magneto-optical coupling factor Q, a very frequent and common assumption in magneto-optics of metallic thin films and multilayers. In addition, the Co films exhibit a similar strain-induced increase of the magnetocrystalline anisotropy energy, evidencing the fact that both magneto-optical anisotropy and magnetocrystalline anisotropy are dependent on the modification of the spin-orbit coupling introduced by anisotropic lattice distortions.

引用

页数：6

共 46 条

[1] Surface-topography induced optical and magneto-optical anisotropy of permalloy gratings [J].

Arregi, J. A. ;

Gonzalez-Diaz, J. B. ;

Soriano, N. ;

Mora, B. ;

Berger, A. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2015, 48 (30)

[2] Study of generalized magneto-optical ellipsometry measurement reliability [J].

Arregi, J. A. ;

Gonzalez-Diaz, J. B. ;

Bergaretxe, E. ;

Idigoras, O. ;

Unsal, T. ;

Berger, A. .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (10)

[3] Quantitative vector magnetometry using generalized magneto-optical ellipsometry [J].

Berger, A ;

Pufall, MR .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) :4583-4585

[4] Generalized magneto-optical ellipsometry [J].

Berger, A ;

Pufall, MR .

APPLIED PHYSICS LETTERS, 1997, 71 (07) :965-967

[5] Spin-flip processes and ultrafast magnetization dynamics in Co:: Unifying the microscopic and macroscopic view of femtosecond magnetism [J].

Cinchetti, M. ;

Albaneda, M. Sanchez ;

Hoffmann, D. ;

Roth, T. ;

Wuestenberg, J.-P. ;

Krauss, M. ;

Andreyev, O. ;

Schneider, H. C. ;

Bauer, M. ;

Aeschlimann, M. .

PHYSICAL REVIEW LETTERS, 2006, 97 (17)

[6] 1ST-PRINCIPLES CALCULATION OF THE MAGNETOCRYSTALLINE ANISOTROPY ENERGY OF IRON, COBALT, AND NICKEL [J].

DAALDEROP, GHO ;

KELLY, PJ ;

SCHUURMANS, MFH .

PHYSICAL REVIEW B, 1990, 41 (17) :11919-11937

[7] A SURVEY OF MAGNETOOPTIC EFFECTS [J].

FREISER, MJ .

IEEE TRANSACTIONS ON MAGNETICS, 1968, MAG4 (02) :152-&

[8]

Ganshina E A, 1980, SOV PHYS JETP, V51, P369

[9] Anomalous magneto-optical behavior of uniaxial Co/CoO bilayer films [J].

Gonzalez-Diaz, J. B. ;

Arregi, J. A. ;

Bergaretxe, E. ;

Fertin, M. J. ;

Idigoras, O. ;

Berger, A. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2013, 325 :147-151

[10] THEORETICAL INVESTIGATION OF THE ORIENTATION DEPENDENCE OF THE MAGNETOOPTICAL KERR-EFFECT IN CO [J].

GUO, GY ;

EBERT, H .

PHYSICAL REVIEW B, 1994, 50 (14) :10377-10380

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