Differences in the Electronic Structures of Bulk and Powder FeV2O4 Spinel Oxide Investigated by Using Synchrotron Radiation

被引：2

作者：

Hwang, Jihoon ^{[1
]}

Kim, D. H. ^{[1
]}

Lee, Eunsook ^{[1
]}

Kang, J. -S. ^{[1
]}

Kim, W. C. ^{[2
]}

Kim, C. S. ^{[2
]}

Han, S. W. ^{[3
]}

Hong, S. C. ^{[3
]}

Park, B. -G. ^{[4
]}

Kim, J. -Y. ^{[4
]}

机构：

[1] Catholic Univ Korea, Dept Phys, Bucheon 420743, South Korea

[2] Kookmin Univ, Dept Phys, Seoul 136702, South Korea

[3] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea

[4] POSTECH, Pohang Accelerator Lab, Pohang 790784, South Korea

来源：

JOURNAL OF THE KOREAN MAGNETICS SOCIETY | 2011年 / 21卷 / 06期

关键词：

FeV2O4; XAS; XMCD; electronic structure; spinel; ferrimagnetism;

D O I：

10.4283/JKMS.2011.21.6.198

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electronic structure of ferrimagnetic spinel oxide of FeV2O4 has been investigated by employing soft x-ray absorption spectroscopy (XAS) and soft x-ray magnetic circular dichroism (XMCD). The Fe 2p and V 2p XAS spectra show that the valence states of Fe and V ions are similar to Fe2.3+ mixed-valent states and similar to V3+ states, respectively. In Fe 2p XMCD spectra, finite XMCD signals are observed for divalent Fe2+ states only, but not for Fe3+ states. This finding indicates that the magnetic moments of Fe2+ ions are ordered ferromagnetically but that those of Fe3+ ions are cancelled, implying that Fe2+ ions play an important role in determining magnetic properties of FeV2O4.

引用

页码：198 / 203

页数：6

共 11 条

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