Zn1-xCoxO diluted magnetic semiconductors synthesized under hydrothermal conditions

被引：47
作者：
Bouloudenine, M
Viart, N
Colis, S
Dinia, A
机构：
[1] ULP, ECPM, CNRS,Inst Phys & Chim Mat Strasbourg, UMR 7504,Grp Mat Inorgan,IPCMS, F-67034 Strasbourg 2, France
[2] Univ Annaba, Fac Sci, Dept Phys, Annaba 23000, Algeria
来源：
CATALYSIS TODAY | 2006年 / 113卷 / 3-4期
关键词：
magnetic semiconductor; hydrothermal condition; ZnO film;
D O I：
10.1016/j.cattod.2005.11.073
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Polycrystalline Znl(1-x)Co(x)O magnetic semiconductors were synthesized by hydrothermal technique from aqueous solutions of Zn and Co acetates using potassium hydroxide KOH as hydrolytic catalyst. The structural and magnetic properties of the samples were investigated as a function of acetates and KOH concentrations. The results show that the highest amount of Co that can be successfully inserted in the ZnO matrix is around 10%, when using concentrations of 0.5 and 0.77 mol/L of acetate and KOH, respectively. For the Zn0.9Co0.1O sample, X-ray diffraction indicates a pure ZnO wurtzite structure free of parasitic phases in agreement with optical measurements that reveal the presence of CO2+ cations in substitution of Zn2+. The magnetization measurements show a paramagnetic behaviour and no evidence of ferromagnetism. This may be due to the absence of free carriers. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：240 / 244
页数：5
相关论文
共 31 条
  • [21] PRELLIER W, 2003, J PHYS CONDENS MATTE, V15
  • [22] First principles materials design for semiconductor spintronics
    Sato, K
    Katayama-Yoshida, H
    [J]. SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2002, 17 (04) : 367 - 376
  • [23] Material design for transparent ferromagnets with ZnO-based magnetic semiconductors
    Sato, K
    Katayama-Yoshida, H
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2000, 39 (6B): : L555 - L558
  • [24] Magnetic quantum dots:: Synthesis, spectroscopy, and magnetism of CO2+- and Ni2+-doped ZnO nanocrystals
    Schwartz, DA
    Norberg, NS
    Nguyen, QP
    Parker, JM
    Gamelin, DR
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (43) : 13205 - 13218
  • [25] Rapid hydrothermal synthesis of ZnO nanorods without organics
    Sue, KW
    Kimura, K
    Yamamoto, M
    Arai, K
    [J]. MATERIALS LETTERS, 2004, 58 (26) : 3350 - 3352
  • [26] MAGNETIC-BEHAVIOR OF THE DILUTED MAGNETIC SEMICONDUCTOR ZN1-XMNXSE
    TWARDOWSKI, A
    SWAGTEN, HJM
    DEJONGE, WJM
    DEMIANIUK, M
    [J]. PHYSICAL REVIEW B, 1987, 36 (13): : 7013 - 7023
  • [27] Magnetic and electric properties of transition-metal-doped ZnO films
    Ueda, K
    Tabata, H
    Kawai, T
    [J]. APPLIED PHYSICS LETTERS, 2001, 79 (07) : 988 - 990
  • [28] Spectroscopy and coordination chemistry of cobalt in molecular sieves
    Verberckmoes, AA
    Weckhuysen, BM
    Schoonheydt, RA
    [J]. MICROPOROUS AND MESOPOROUS MATERIALS, 1998, 22 (1-3) : 165 - 178
  • [29] Spintronics:: A spin-based electronics vision for the future
    Wolf, SA
    Awschalom, DD
    Buhrman, RA
    Daughton, JM
    von Molnár, S
    Roukes, ML
    Chtchelkanova, AY
    Treger, DM
    [J]. SCIENCE, 2001, 294 (5546) : 1488 - 1495
  • [30] Asymmetric twinning crystals of Zinc oxide formed in a hydrothermal process
    Xu, HY
    Wang, H
    Zhang, YC
    Wang, S
    Zhu, MK
    Yan, H
    [J]. CRYSTAL RESEARCH AND TECHNOLOGY, 2003, 38 (06) : 429 - 432
1234