Aqueous Synthesis of Mn- and Co-Doped ZnO Nanorods

被引：187

作者：

Panigrahy, Bharati ^{[2
]}

Aslam, M. ^{[1
]}

Bahadur, D. ^{[2
]}

机构：

[1] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India

[2] Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 27期

关键词：

MAGNETIC-PROPERTIES; FERROMAGNETISM; TEMPLATE; GROWTH; FILMS; BULK; SIZE;

D O I：

10.1021/jp102163b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein, we report the optical and magnetic properties of Mn- and Co-doped ZnO nanorods fabricated via a simple one-step aqueous-based chemical method. Interestingly, SEM results reveal a uniform size distribution of the nanorods throughout the substrate. The UV emission band of doped ZnO nanorods reveals a red shift from 382 to 384.5 nm, indicating a band-edge bending due to the dopants. The defect-related band centered at 600 urn is suppressed (I-D/I-UV = 1-0.35) considerably in doped nanorods, revealing the quenching of surface defects present in the nanostructures. XRD, XPS, Raman spectra, and EDS data demonstrate a successful incorporation of TM dopants in ZnO nanorods. Localized SAED patterns taken using nanoprobe size reveals that the nanorods are single crystals, grown along the c-axis [0002] direction. A systematic evalution of the enhancement in ferromagnetism (M = 0.15 x 10(-2) to 1.3 x 10(-2) emu/g) is found in modified doped ZnO nanorods.

引用

页码：11758 / 11763

页数：6

共 49 条

[1] FIRST-ORDER RAMAN EFFECT IN WURTZITE-TYPE CRYSTALS [J].

ARGUELLO, CA ;

ROUSSEAU, DL ;

PORTO, SPS .

PHYSICAL REVIEW, 1969, 181 (03) :1351-&

[2] Influence of Mn Doping on Structural and Vibrational Properties of Self-Assembled Mn Doped ZnO Nanocrystals [J].

Barick, K. C. ;

Bahadur, D. .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2008, 8 (08) :4263-4267

[3] Self-aggregation and assembly of size-tunable transition metal doped ZnO nanocrystals [J].

Barick, K. C. ;

Aslam, M. ;

Dravid, Vinayak P. ;

Bahadur, D. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (39) :15163-15170

[4] X-ray photoelectron spectroscopy and auger electron spectroscopy studies of Al-doped ZnO films [J].

Chen, M ;

Wang, X ;

Yu, YH ;

Pei, ZL ;

Bai, XD ;

Sun, C ;

Huang, RF ;

Wen, LS .

APPLIED SURFACE SCIENCE, 2000, 158 (1-2) :134-140

[5] Role of valence-band Co 3d states on ferromagnetism in Zn1-xCoxO nanorods [J].

Chiou, J. W. ;

Tsai, H. M. ;

Pao, C. W. ;

Kumar, K. P. Krishna ;

Chen, J. H. ;

Ling, D. C. ;

Chien, F. Z. ;

Pong, W. F. ;

Tsai, M. -H. ;

Wu, J. J. ;

Yang, M. -H. ;

Liu, S. C. ;

Hong, I. -H. ;

Chen, C. -H. ;

Lin, H. -J. ;

Lee, J. F. .

APPLIED PHYSICS LETTERS, 2007, 90 (06)

[6] Magnetic properties of cobalt and manganese doped ZnO nanowires [J].

Clavel, G. ;

Pinna, N. ;

Zitoun, D. .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2007, 204 (01) :118-124

[7] Solvent dependent shape and magnetic properties of doped ZnO nanostructures [J].

Clavel, Guylhaine ;

Willinger, Marc-Georg ;

Zitoun, David ;

Pinna, Nicola .

ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (16) :3159-3169

[8] Donor impurity band exchange in dilute ferromagnetic oxides [J].

Coey, JMD ;

Venkatesan, M ;

Fitzgerald, CB .

NATURE MATERIALS, 2005, 4 (02) :173-179

[9] Influence of Mn valence bond on ferromagnetic properties of corn-like Zn1-xMnxO nanorods [J].

Cong, C. J. ;

Zhang, K. L. .

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2006, 243 (12) :2764-2771

[10] Electrodeposition and room temperature ferromagnetic anisotropy of Co and Ni-doped ZnO nanowire arrays [J].

Cui, JB ;

Gibson, UJ .

APPLIED PHYSICS LETTERS, 2005, 87 (13) :1-3

← 1 2 3 4 5 →