Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO2 single crystals

doi:10.1088/1674-1056/25/11/116103

中国物理B ›› 2016, Vol. 25 ›› Issue (11): 116103-116103.doi: 10.1088/1674-1056/25/11/116103

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO₂ single crystals

Nan-Nan Xu(许楠楠), Gong-Ping Li(李公平), Qiao-Lu Lin(林俏露), Huan Liu(刘欢), Liang-Man Bao(包良满)

1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
2 State Key Laboratory of Crystal Material, Shandong University, Jinan 250001, China;
3 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

收稿日期:2016-06-12 修回日期:2016-07-08 出版日期:2016-11-05 发布日期:2016-11-05
通讯作者: Gong-Ping Li E-mail:ligp@lzu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11575074), the Open Project of State Key laboratory of Crystal Material, Shandong University, China (Grant No. KF1311), the Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, China (Grant No. LZUMMM2012003), the Open Project of Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, China (Grant No. 201204), and the Fundamental Research Funds for the Central Universities, China (Grant No. lzujbky-2015-240).

Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO₂ single crystals

Nan-Nan Xu(许楠楠)¹, Gong-Ping Li(李公平)^1,2, Qiao-Lu Lin(林俏露)¹, Huan Liu(刘欢)¹, Liang-Man Bao(包良满)³

1 School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;
2 State Key Laboratory of Crystal Material, Shandong University, Jinan 250001, China;
3 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

Received:2016-06-12 Revised:2016-07-08 Online:2016-11-05 Published:2016-11-05
Contact: Gong-Ping Li E-mail:ligp@lzu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11575074), the Open Project of State Key laboratory of Crystal Material, Shandong University, China (Grant No. KF1311), the Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, China (Grant No. LZUMMM2012003), the Open Project of Key Laboratory of Beam Technology and Material Modification of Ministry of Education, Beijing Normal University, China (Grant No. 201204), and the Fundamental Research Funds for the Central Universities, China (Grant No. lzujbky-2015-240).

摘要/Abstract

摘要：

Remarkable room-temperature ferromagnetism was observed both in undoped and Cu-doped rutile TiO₂ single crystals (SCs). To tune their magnetism, Ar ion irradiation was quantitatively performed on the two crystals in which the saturation magnetizations for the samples were enhanced distinctively. The post-irradiation led to a spongelike layer in the near surface of the Cu-doped TiO₂. Meanwhile, a new CuO-like species present in the sample was found to be dissolved after the post-irradiation. Analyzing the magnetization data unambiguously reveals that the experimentally observed ferromagnetism is related to the intrinsic defects rather than the exotic Cu ions, while these ions are directly involved in boosting the absorption in the visible region.

关键词: single-crystal TiO₂, Cu ion implantation, Ar ion irradiation/post-irradiation, room-temperature ferromagnetism

Abstract:

Key words: single-crystal TiO₂, Cu ion implantation, Ar ion irradiation/post-irradiation, room-temperature ferromagnetism

中图分类号: (Physical radiation effects, radiation damage)

61.80.-x

61.72.-y (Defects and impurities in crystals; microstructure) 75.50.-y (Studies of specific magnetic materials)

许楠楠, 李公平, 林俏露, 刘欢, 包良满. Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO₂ single crystals[J]. 中国物理B, 2016, 25(11): 116103-116103.

Nan-Nan Xu(许楠楠), Gong-Ping Li(李公平), Qiao-Lu Lin(林俏露), Huan Liu(刘欢), Liang-Man Bao(包良满). Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO₂ single crystals[J]. Chin. Phys. B, 2016, 25(11): 116103-116103.

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Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO₂ single crystals

Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO₂ single crystals

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