Alteration of Mn exchange coupling by oxygen interstitials in ZnO:Mn thin films

被引：51

作者：

Ilyas, Usman ^{[1
,2
]}

Rawat, R. S. ^{[1
]}

Wang, Y. ^{[1
]}

Tan, T. L. ^{[1
]}

Lee, P. ^{[1
]}

Chen, R. ^{[3
]}

Sun, H. D. ^{[3
]}

Li, Fengji ^{[4
]}

Zhang, Sam ^{[4
]}

机构：

[1] Nanyang Technol Univ, NIE, NSSE, Singapore 637616, Singapore

[2] Univ Engn & Technol Lahore, Dept Phys, Lahore 54890, Pakistan

[3] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[4] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 17期

关键词：

ZnO:Mn thin films; Spin coating technique; Oxygen interstitials; Dilute magnetic semiconductors (DMS); Room temperature ferromagnetism (RTFM); MAGNETIC-PROPERTIES; TEMPERATURE FERROMAGNETISM; PHOTOLUMINESCENCE;

D O I：

10.1016/j.apsusc.2012.03.043

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：

The un-doped and Mn doped ZnO thin films, with oxygen rich stoichiometry, were deposited onto Si (1 0 0) substrate using spin coating technique. The structural analysis revealed the hexagonal wurtzite structure without any impurity phase formation. A consistent increase in cell volume with the increase in Mn doping concentration confirmed the successful incorporation of bigger sized tetrahedral Mn2+ ions (0.83 angstrom) in ZnO host matrix that was also endorsed by the presence of Mn 2p(3/2) core level XPS spectroscopic peak. Extended deep level emission (DLE) spectra centered at similar to 627 nm confirmed the presence of oxygen interstitials. Moreover, the magnetic measurements of field dependent M-H curves revealed the origin of ferromagnetic ordering from Mn-defect pair exchange coupling with oxygen interstitials in ZnO host matrix. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：6373 / 6378

页数：6

共 32 条

[1] Correlation between saturation magnetization, bandgap, and lattice volume of transition metal (M=Cr, Mn, Fe, Co, or Ni) doped Zn1-xMxO nanoparticles [J].

Anghel, J. ;

Thurber, A. ;

Tenne, D. A. ;

Hanna, C. B. ;

Punnoose, A. .

JOURNAL OF APPLIED PHYSICS, 2010, 107 (09) :1019

[2]

Barret C.S., 1980, STRUCTURE METALS

[3] Influence of Mn incorporation on the structural and optical properties of sol gel derived ZnO film [J].

Caglar, Yasemin ;

Ilican, Saliha ;

Caglar, Mujdat ;

Yakuphanoglu, Fahrettin .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2010, 53 (02) :372-377

[4] Synthesis, optical, and magnetic properties of diluted magnetic semiconductor Zn1-xMnxO nanowires via vapor phase growth [J].

Chang, YQ ;

Wang, DB ;

Luo, XH ;

Xu, XY ;

Chen, XH ;

Li, L ;

Chen, CP ;

Wang, RM ;

Xu, J ;

Yu, DP .

APPLIED PHYSICS LETTERS, 2003, 83 (19) :4020-4022

[5] Defects induced ferromagnetism in Mn doped ZnO [J].

Chattopadhyay, S. ;

Neogi, S. K. ;

Sarkar, A. ;

Mukadam, M. D. ;

Yusuf, S. M. ;

Banerjee, A. ;

Bandyopadhyay, S. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2011, 323 (3-4) :363-368

[6] Synthesis, structure and ferromagnetic properties of Mn-doped ZnO nanoparticles [J].

Cong, CJ ;

Liao, L ;

Li, JC ;

Fan, LX ;

Zhang, KL .

NANOTECHNOLOGY, 2005, 16 (06) :981-984

[7] REVIEW OF RECENT ADVANCES IN TRANSITION AND LANTHANIDE METAL-DOPED GaN AND ZnO [J].

Davies, Ryan P. ;

Abernathy, C. R. ;

Pearton, S. J. ;

Norton, D. P. ;

Ivill, M. P. ;

Ren, F. .

CHEMICAL ENGINEERING COMMUNICATIONS, 2009, 196 (09) :1030-1053

[8] Zener model description of ferromagnetism in zinc-blende magnetic semiconductors [J].

Dietl, T ;

Ohno, H ;

Matsukura, F ;

Cibert, J ;

Ferrand, D .

SCIENCE, 2000, 287 (5455) :1019-1022

[9] Structural and magnetic properties of Mn-doped ZnO powders [J].

El-Hilo, M. ;

Dakhel, A. A. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2011, 323 (16) :2202-2205

[10] Magnetic properties of mn-doped ZnO [J].

Fukumura, T ;

Jin, ZW ;

Kawasaki, M ;

Shono, T ;

Hasegawa, T ;

Koshihara, S ;

Koinuma, H .

APPLIED PHYSICS LETTERS, 2001, 78 (07) :958-960

← 1 2 3 4 →