A NEW MAGNETO-OPTIC ENHANCEMENT EFFECT IN MACROSCOPIC FERRIMAGNETS

被引：27

作者：

FUMAGALLI, P ^{[1
]}

SPAETH, C ^{[1
]}

RUDIGER, U ^{[1
]}

GAMBINO, RJ ^{[1
]}

机构：

[1] SUNY STONY BROOK,DEPT MAT SCI & ENGN,STONY BROOK,NY 11794

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1995年 / 31卷 / 06期

关键词：

Macroscopic ferrimagnets - Polar Kerr rotation;

D O I：

10.1109/20.490370

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Optical and magneto-optic properties at room temperature of Co-1-x(EuS)(x) evaporated thin films are presented over a wide photon-energy range. Co-1-x(EuS)(x) belongs to a new class of phase-separated magnetic materials, called macroscopic ferrimagnets, in which two magnetic phases couple antiferromagnetically across the phase boundary. Polar Kerr rotations of up to 2 degrees are observed in Co rich samples (x less than or equal to 0.3) at photon energies of 4.5 eV. The high Kerr rotation coincides with a distinct decrease in reflectivity suggesting an optical enhancement effect. A model calculation indicates a new type of enhancement based on the relative index of refraction at the phase boundary between the Co matrix and the EuS precipitate particles,

引用

页码：3319 / 3324

页数：6

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