Investigation of impurity phase formation for (ZnO)1-x(TMO)x bulk samples formed by ball milling

被引：16

作者：

Karamat, S. ^{[1
]}

Ke, C. ^{[2
]}

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

Zhou, W. ^{[3
]}

Lee, P. ^{[1
]}

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

机构：

[1] Nanyang Technol Univ, Natl Inst Educ, Singapore 637616, Singapore

[2] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

[3] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Precis Engn & Nanotechnol Ctr, Singapore 639798, Singapore

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 09期

关键词：

Dilute magnetic semiconductors; Ball milling; Rietveld refinement; MN-DOPED ZNO; THIN-FILMS; SEMICONDUCTORS; FERROMAGNETISM; COBALT;

D O I：

10.1016/j.apsusc.2008.11.077

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：

Structural, compositional, optical and magnetic properties have been studied for polycrystalline (ZnO)(0.90)(TMO)(0.10) bulk samples, where TM (transition metal ions) = Mn, Fe, and Co. The quantitative Rietveld analysis showed relatively higher percentage of impurity (spinel and oxide) phases of about 33.76, 52.38 and 55.61% for Mn, Fe and Co doped ZnO samples, respectively. The de-convolution of XPS spectra indicated the presence of different phases. The appearance of shaking satellites in XPS spectra confirmed the presence of different valence states of dopant ions. The red shift in energy band gap, estimated from reflectance UV-vis spectroscopy, was observed for all TM doped bulk samples. For Mn doping, paramagnetic behavior was obtained while for Co and Fe, weak ferromagnetic behavior was observed at room temperature. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：4814 / 4820

页数：7

共 17 条

[1] Location of tin and charge balance in materials of composition Fe3-xSnxO4 (x<0.3) [J].

Berry, FJ ;

Skinner, SJ ;

Helgason, O ;

Bilsborrow, R ;

Marco, JF .

POLYHEDRON, 1998, 17 (01) :149-152

[2] Influence of doping concentration on the properties of ZnO:Mn thin films by sol-gel method [J].

Chen, Wen ;

Wang, Jing ;

Wang, Min-rui .

VACUUM, 2007, 81 (07) :894-898

[3] UV optical properties of ferromagnetic Mn-doped ZnO thin films grown by PLD [J].

Diaconu, M ;

Schmidt, H ;

Hochmuth, H ;

Lorenz, M ;

Benndorf, G ;

Lenzner, J ;

Spemann, D ;

Setzer, A ;

Nielsen, KW ;

Esquinazi, P ;

Grundmann, M .

THIN SOLID FILMS, 2005, 486 (1-2) :117-121

[4]

DIETL T, 2000, SCIENCE, V1019, P287

[5] SURFACE-CHEMISTRY OF COBALT IN CALCINED COBALT-KAOLINITE MATERIALS [J].

DILLARD, JG ;

SCHENCK, CV ;

KOPPELMAN, MH .

CLAYS AND CLAY MINERALS, 1983, 31 (01) :69-72

[6] 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

[7] An oxide-diluted magnetic semiconductor: Mn-doped ZnO [J].

Fukumura, T ;

Jin, ZW ;

Ohtomo, A ;

Koinuma, H ;

Kawasaki, M .

APPLIED PHYSICS LETTERS, 1999, 75 (21) :3366-3368

[8] Effect of Co doping on the structural, optical and magnetic properties of ZnO nanoparticles [J].

Hays, J. ;

Reddy, K. M. ;

Graces, N. Y. ;

Engelhard, M. H. ;

Shutthanandan, V. ;

Luo, M. ;

Xu, C. ;

Giles, N. C. ;

Wang, C. ;

Thevuthasan, S. ;

Punnoose, A. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2007, 19 (26)

[9] Ferromagnetism induced by clustered Co in Co-doped anatase TiO2 thin films -: art. no. 017401 [J].

Kim, JY ;

Park, JH ;

Park, BG ;

Noh, HJ ;

Oh, SJ ;

Yang, JS ;

Kim, DH ;

Bu, SD ;

Noh, TW ;

Lin, HJ ;

Hsieh, HH ;

Chen, CT .

PHYSICAL REVIEW LETTERS, 2003, 90 (01)

[10] Spectroscopic ellipsometry study of optical transitions in Zn1-xCoxO alloys [J].

Kim, KJ ;

Park, YR .

APPLIED PHYSICS LETTERS, 2002, 81 (08) :1420-1422

← 1 2 →