Irradiation induced ferromagnetism at room temperature in TiO2 thin films: X-ray magnetic circular dichroism characterizations

被引：36

作者：

Thakur, Hardeep ^{[1
]}

Thakur, P. ^{[2
]}

Kumar, Ravi ^{[3
]}

Brookes, N. B. ^{[2
]}

Sharma, K. K. ^{[1
]}

Singh, A. P. ^{[4
]}

Kumar, Yogesh ^{[4
]}

Gautam, S. ^{[5
]}

Chae, K. H. ^{[5
]}

机构：

[1] Natl Inst Technol, Dept Phys, Hamirpur 177005, India

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[3] Natl Inst Technol, Ctr Mat Sci & Engn, Hamirpur 177005, India

[4] Interuniv Accelerator Ctr, Div Mat Sci, New Delhi 110067, India

[5] Korea Inst Sci & Technol, Nano Anal Ctr, Seoul 136791, South Korea

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 19期

关键词：

HEAVY-IONS; ABSORPTION; TITANIUM;

D O I：

10.1063/1.3592250

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the room temperature ferromagnetism in the swift heavy ion (SHI) irradiated TiO2 thin films by x-ray absorption spectroscopy (XAS) and x-ray magnetic circular dichroism (XMCD) experiments at the O K and Ti L-3,(2) absorption edges. The XAS/XMCD measurements provide direct evidence of magnetic polarization of the O 2p and Ti 3d orbitals. The unquenched orbital magnetic moment within the O 2p shell is ferromagnetically coupled to the neighboring Ti moments, which illustrates the intense hybridization of the O 2p and Ti 3d orbitals induced by SHI irradiation. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3592250]

引用

页数：3

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