High energy resolution magnetic circular dichroism measurement of the ferrite family

被引：4

作者：

Agui, A

Saitoh, Y

Yoshigoe, A

Nakatani, T

Matsushita, T

Mizumaki, M

机构：

[1] Japan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan

[2] Japan Synchrotron Radiat Res Inst, Mikazuki, Hyogo 6795198, Japan

来源：

SURFACE REVIEW AND LETTERS | 2002年 / 9卷 / 02期

关键词：

D O I：

10.1142/S0218625X02003032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Magnetic circular dichroism (MCD) spectra of spinel ferrites MFe2O4 (M = Co, Mn, Fe, Co and Ni) have been measured by using a photon-helicity-switching method. The method achieves high energy resolution and a low noise-to-signal ratio. The Fe L-2,L-3 absorption spectra of MFe2O4 show a similar spectral profile; on the other hand, the MCD spectra show the characteristic fine structures. These differences are attributed to the variety of 3d electron configuration of Fe ions (Fe2+ or Fe3+) and the local symmetry (tetrahedral or octahedral). The origin of the positive peak of MFe2O4 (M = Fe, CO and Ni) MCD spectra at the L-3 edge is attributed to the tetrahedral Fe3+ (3d(5)) state.

引用

页码：843 / 848

页数：6

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