Electronic structure and room temperature ferromagnetism of C doped TiO2

被引：16

作者：

Ablat, Abduleziz ^{[1
]}

Wu, Rong ^{[1
]}

Mamat, Mamatrishat ^{[1
]}

Ghupur, Yasin ^{[1
]}

Aimidula, Aimierding ^{[1
]}

Bake, Muhammad Ali ^{[1
]}

Gholam, Turghunjan ^{[1
]}

Wang, Jiaou ^{[2
]}

Qian, Haijie ^{[2
]}

Wu, Rui ^{[2
]}

Ibrahim, Kurash ^{[2
]}

机构：

[1] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2016年 / 243卷

基金：

中国国家自然科学基金;

关键词：

TiO2; Ferromagnetism; Structural; X-ray techniques; RAY-ABSORPTION SPECTROSCOPY; RUTILE TIO2;

D O I：

10.1016/j.ssc.2016.05.013

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

C-doped TiO2 nanoparticles were successfully synthesized using a simple hydrothermal synthesis method. After this preparation, a portion of the samples were annealed separately in air on the one hand, and in argon on the other, and another portion remained untreated. The results of X-ray diffraction show that the untreated samples primarily display anatase and rutile structures. However, after annealing, the samples displayed the rutile structure only. The Ti K-edge and L-edge Near Edge X-ray Absorption Fine Structure analyses clearly show that C atoms were successfully incorporated into the TiO2 host lattice. All doped samples exhibit ferromagnetism at room temperature. The saturation magnetization (Ms) and coercive fields (Hc) tend to decrease after the samples are annealed in argon and in air. The maximum Ms of the untreated samples was approximately 0.038 emu/g. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：7 / 11

页数：5

共 25 条

[1]

Bao N., 2011, J APPL PHYS, V109, P07002

[2] RuO2 nanowires and RuO2/TiO2 core/shell nanowires:: From synthesis to mechanical, optical, electrical, and photoconductive properties [J].

Chueh, Yu-Lun ;

Hsieh, Chin-Hua ;

Chang, Mu-Tung ;

Chou, Li-Jen ;

Lao, Chang S. ;

Song, Jin H. ;

Gan, Jon-Yiew ;

Wang, Zhong L. .

ADVANCED MATERIALS, 2007, 19 (01) :143-+

[3] Magnetism in hafnium dioxide [J].

Coey, JMD ;

Venkatesan, M ;

Stamenov, P ;

Fitzgerald, CB ;

Dorneles, LS .

PHYSICAL REVIEW B, 2005, 72 (02)

[4] L2,3 X-RAY-ABSORPTION EDGES OF D0 COMPOUNDS - K+, CA-2+, SC-3+ AND TI-4+ IN OH (OCTAHEDRAL) SYMMETRY [J].

DEGROOT, FMF ;

FUGGLE, JC ;

THOLE, BT ;

SAWATZKY, GA .

PHYSICAL REVIEW B, 1990, 41 (02) :928-937

[5] Characterization of paramagnetic species in N-doped TiO2 powders by EPR spectroscopy and DFT calculations [J].

Di Valentin, C ;

Pacchioni, G ;

Selloni, A ;

Livraghi, S ;

Giamello, E .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (23) :11414-11419

[6] Enhancement of room temperature ferromagnetism in N-doped TiO2-x rutile: Correlation with the local electronic properties [J].

Drera, G. ;

Mozzati, M. C. ;

Galinetto, P. ;

Diaz-Fernandez, Y. ;

Malavasi, L. ;

Bondino, F. ;

Malvestuto, M. ;

Sangaletti, L. .

APPLIED PHYSICS LETTERS, 2010, 97 (01)

[7] Room temperature ferromagnetism in non-magnetic doped TiO2 nanoparticles [J].

Gomez-Polo, C. ;

Larumbe, S. ;

Pastor, J. M. .

JOURNAL OF APPLIED PHYSICS, 2013, 113 (17)

[8] TiO2 photocatalysis:: A historical overview and future prospects [J].

Hashimoto, K ;

Irie, H ;

Fujishima, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2005, 44 (12) :8269-8285

[9] Electronic structure and magnetic properties of Co doped TiO2 thin films using X-ray absorption spectroscopy [J].

Kumar, Shalendra ;

Park, J. S. ;

Kim, D. J. ;

Lee, M. H. ;

Song, Tae Kwon ;

Gautam, Sanjeev ;

Chae, K. H. ;

Kim, S. S. ;

Kim, M. -H. .

CERAMICS INTERNATIONAL, 2015, 41 :S370-S375

[10] Study of the relation between oxygen vacancies and ferromagnetism in Fe-doped TiO2 nano-powders [J].

Mudarra Navarro, Azucena M. ;

Rodriguez Torres, Claudia E. ;

Bilovol, Vitaliy ;

Fabiana Cabrera, A. ;

Errico, L. A. ;

Weissmann, M. .

JOURNAL OF APPLIED PHYSICS, 2014, 115 (22)

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