Carbon doped ZnO: Synthesis, characterization and interpretation

被引：161

作者：

Mishra, D. K. ^{[1
]}

Mohapatra, J. ^{[1
]}

Sharma, M. K. ^{[2
]}

Chattarjee, R. ^{[2
]}

Singh, S. K. ^{[3
]}

Varma, Shikha ^{[4
]}

Behera, S. N. ^{[5
,6
]}

Nayak, Sanjeev K. ^{[7
,8
]}

Entel, P. ^{[7
,8
]}

机构：

[1] Siksha O Anusandhan Univ, Inst Tech Educ & Res, Dept Phys, Bhubaneswar 751030, Odisha, India

[2] IIT Delhi, Dept Phys, Indian Inst Technol, Delhi 110016, India

[3] Inst Minerals & Mat Technol CSIR, Adv Mat Technol Dept, Bhubaneswar 751013, Odisha, India

[4] Inst Phys, Bhubaneswar 751004, Orissa, India

[5] IIT Bhubaneswar, Indian Inst Technol, Sch Elect Sci, Bhubaneswar 751013, Orissa, India

[6] NIST, Berhampur 761008, Odisha, India

[7] Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany

[8] Univ Duisburg Essen, CeNiDE, D-47057 Duisburg, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 329卷

关键词：

Nanostructure; Plasma deposition; Raman spectroscopy; Photoelectron spectroscopy; Magnetic Property; TOTAL-ENERGY CALCULATIONS; ZINC-OXIDE; FERROMAGNETISM; SEMICONDUCTORS; SPECTROSCOPY; SPINTRONICS; (GA; MN)AS; DEFECTS; FILMS;

D O I：

10.1016/j.jmmm.2012.09.058

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel thermal plasma in-flight technique has been adopted to synthesize nanocrystalline ZnO and carbon doped nanocrystalline ZnO matrix. Transmission electron microscopy (TEM) studies on these samples show the average particle sizes to be around 32 nm for ZnO and for carbon doped ZnO. An enhancement of saturation magnetization in nanosized carbon doped ZnO matrix by a factor of 3.8 has been found in comparison to ZnO nanoparticles at room temperature. Raman measurement clearly indicates the presence of Zn-C complexes surrounded by ZnO matrix in carbon doped ZnO. This indicates that the ferromagnetic signature in carbon doped ZnO arises from the creation of defects or the development of oxy-carbon clusters, in the carbon doped ZnO system. Theoretical studies based on density functional theory also support the experimental analyses. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：146 / 152

页数：7

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