Electronic Manifestation of Cation-Vacancy-Induced Magnetic Moments in a Transparent Oxide Semiconductor: Anatase Nb:TiO2

被引：99

作者：

Zhang, Shixiong ^{[1
]}

Ogale, Satishchandra B. ^{[2
]}

Yu, Weiqiang ^{[1
]}

Gao, Xingyu ^{[3
]}

Liu, Tao ^{[3
]}

Ghosh, Saurabh ^{[5
]}

Das, Gour P. ^{[5
]}

Wee, Andrew T. S. ^{[3
]}

Greene, Richard L. ^{[1
]}

Venkatesan, Thirumalai ^{[1
,3
,4
]}

机构：

[1] Univ Maryland, Ctr Nanophys & Adv Mat, College Pk, MD 20742 USA

[2] Natl Chem Lab, Phys & Mat Chem Div, Pune 411008, Maharashtra, India

[3] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[4] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117542, Singapore

[5] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, India

来源：

ADVANCED MATERIALS | 2009年 / 21卷 / 22期

关键词：

TOTAL-ENERGY CALCULATIONS; THIN-FILMS; FERROMAGNETISM; EXCHANGE;

D O I：

10.1002/adma.200803019

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nb-doped anatase TiO2 thin films grown by pulsed-laser deposition show Kondo scattering in elctronic-transport measurements, providing evidence for the formation of magnetic moments. The origin of magnetism is attributed to cation (Ti) vacancies, confirmed by X-ray absorption spectroscopy and first-principle calculations. The Ti vacancies are controlled by oxygen partial pressure during growth.

引用

页码：2282 / +

页数：7

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