Influence of vanadium concentration on the microstructure and magnetic properties of V-doped ZnO thin films

被引：37

作者：

Naydenova, Ts. ^{[1
]}

Atanasov, P. ^{[1
]}

Koleva, M. ^{[1
]}

Nedialkov, N. ^{[1
,3
]}

Perriere, J. ^{[2
]}

Defourneau, D. ^{[2
]}

Fukuoka, H. ^{[3
]}

Obara, M. ^{[3
]}

Baumgart, Ch. ^{[4
]}

Zhou, Sh. ^{[4
]}

Schmidt, H. ^{[4
]}

机构：

[1] Bulgarian Acad Sci, Inst Elect, BU-1784 Sofia, Bulgaria

[2] Inst Nanosci Paris VI, CNRS, UMR 7588, F-75015 Paris, France

[3] Keio Univ, Fac Sci & Technol, Dept Elect & Elect Engn, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

[4] Forschungszentrum Rossendorf, Inst Ion Beam Phys & Mat Res, D-01314 Dresden, Germany

来源：

THIN SOLID FILMS | 2010年 / 518卷 / 19期

关键词：

ZnO; Vanadium doping; Thin films; PLD; DMS; SEMICONDUCTORS;

D O I：

10.1016/j.tsf.2010.04.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Vanadium doped ZnO thin films (Zn(1-x)V(x)O, where x=0.05 or x=0.13) were grown on c-cut sapphire substrates using pulsed laser deposition technique. Their structure and magnetic properties were examined in relation to the doping concentration. All deposited films were highly oriented along the c-axis and exhibited ferromagnetic behavior with a Curie temperature up to 300 K. The crystal structure was found to be better for layers with lower vanadium concentration. The films had a porous fine-grained microstructure and a column-like character as the V concentration was reduced. A weak dependence of magnetization on temperature was observed. The saturation magnetization was found to be strongly dependent on the crystal structure, grain size and V-ion concentration. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：5505 / 5508

页数：4

共 13 条

[1] 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

[2] 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

[3] Observation of ferromagnetism at room temperature in ZnO thin films [J].

Hong, Nguyen Hoa ;

Sakai, Joe ;

Brize, Virginie .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2007, 19 (03)

[4] Transition metal-doped TiO2 and ZnO -: present status of the field [J].

Janisch, R ;

Gopal, P ;

Spaldin, NA .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (27) :R657-R689

[5] Role of vanadium content in ZnO thin films grown by pulsed laser deposition [J].

Koleva, M. E. ;

Atanasov, P. A. ;

Nedialkov, N. N. ;

Fukuoka, H. ;

Obara, M. .

APPLIED SURFACE SCIENCE, 2007, 254 (04) :1228-1231

[6] Magnetism in V-/Mn-doped ZnO layers fabricated on sapphire [J].

Mofor, A. C. ;

Reuss, F. ;

El-Shaer, A. ;

Kling, R. ;

Schlenker, E. ;

Bakin, A. ;

Ahlers, H. ;

Siegner, U. ;

Sievers, S. ;

Albrecht, M. ;

Schoch, W. ;

Limmer, W. ;

Eisenmenger, J. ;

Mueller, T. ;

Huebel, A. ;

Denninger, G. ;

Ziemann, P. ;

Waag, A. .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2007, 88 (01) :161-166

[7] Microstructure change of vanadium clusters in ZnO crystalline films by heat-treatment [J].

Pan, HY ;

Ohno, A ;

Fukami, S ;

Yamasaki, J ;

Tanaka, N .

NANOTECHNOLOGY, 2004, 15 (06) :S420-S427

[8] Ferromagnetic behaviour in semiconductors:: a new magnetism in search of spintronic materials [J].

Quesada, A. ;

Garcia, M. A. ;

de la Venta, J. ;

Pinel, E. Fernandez ;

Merino, J. M. ;

Hernando, A. .

EUROPEAN PHYSICAL JOURNAL B, 2007, 59 (04) :457-461

[9] Epitaxial growth and properties of Zn1-xVxO diluted magnetic semiconductor thin films -: art. no. 172502 [J].

Ramachandran, S ;

Tiwari, A ;

Narayan, J ;

Prater, JT .

APPLIED PHYSICS LETTERS, 2005, 87 (17) :1-3

[10] Theoretical description of carrier mediated magnetism in cobalt doped ZnO [J].

Walsh, Aron ;

Da Silva, Juarez L. F. ;

Wei, Su-Huai .

PHYSICAL REVIEW LETTERS, 2008, 100 (25)

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