HoFe -: Garnet soft XMCD measurements below and above the compensation temperature

被引：16

作者：

Goering, E ^{[1
]}

Gold, S ^{[1
]}

Schütz, G ^{[1
]}

机构：

[1] Univ Wurzburg, Lehrstuhl Expt Phys 4, Wurzburg, Germany

来源：

JOURNAL OF SYNCHROTRON RADIATION | 2001年 / 8卷 / 02期

关键词：

rare earth; transition metals; oxides; X-ray magnetic circular dichroism; sum rules; ferrimagnetism; iron garnets;

D O I：

10.1107/S0909049500018355

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have investigated the magnetism of Holmium-Iron-Garnet (Ho3Fe5O12) at the Ho M-4,M-5 - the Fe L-2,L-3 - and the O K - edges. As expected switching of the sub-lattice magnetization is observed at the compensation temperature. We will give detailed analysis of the Ho and Fe XMCD signals, using sum rules. Fe dichroism is analyzed in terms of 3d ground state moments and compared to Gadolinium-Iron-Garnet (Gd3Fe5O12). Contributions of octahedral and tetrahedral Fe sites could be separated and analyzed quantitatively. At the oxygen K edge two different structures are observable. Those structures show different temperature dependencies. Therefore we address these features separately to Fe and Rare Earth contributions.

引用

页码：422 / 424

页数：3

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