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Journal of Inorganic Materials

Journal of Inorganic Materials >

2008 , Vol. 23 >Issue 4: 673 - 676

DOI: https://doi.org/10.3724/SP.J.1077.2008.00673

Research Paper

Preparation of Zn1-xCrxO Diluted Magnetic Semiconductor by Hydrothermal Method

  • MIAO Hong-Yan ,
  • LI Hui-Qin ,
  • TAN Guo-Qiang ,
  • AN Bai-Jiang ,
  • WEI Yan-Xiang
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  • 1. School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China; 2. Shaanxi
    Baoguang Group. Co., Ltd BaoJi 721304, China

Received date: 2007-08-13

  Revised date: 2007-11-07

  Online published: 2008-07-20

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Abstract

Zn1-xCrxO diluted magnetic semiconductors were synthesized by hydrothermal method at 260℃ for about 28h with different concentrations of Cr (x=0.1, 0.15, 0.2 and 0.25), NaOH with concentration of 3mol/L were used as the mineralizer. X-ray diffraction patterns indicate
that as-prepared Cr-alloyed ZnO has the wurtzite structure with Zn2+ partially substituted by Cr3+ , and the average crystallite size of Zn1-xCrxO are 46.5, 46.1, 50.6 and 48.9nm, respectively. FE-SEM analyses show that the structure of nanopowders changes from short stylolitic structure to long stylolitic structrue when Cr concentration x increases to 0.2. The absorption peaks of Cr-doped nanopowders are demonstrated by UV-Vis analysis, and E_g of ZnO are 3.17, 3.18, 3.19 and 3.23eV, respectively. Room temperature VSM reveals a weakly paramagnetism behavior of the as-prepared Zn1-xCrxO nanocrystalline.


Key words： Zn1-xCrxO; diluted magnetic semiconductor; hydrothermal method; paramagnetism

Cite this article

MIAO Hong-Yan , LI Hui-Qin , TAN Guo-Qiang , AN Bai-Jiang , WEI Yan-Xiang . Preparation of Zn1-xCrxO Diluted Magnetic Semiconductor by Hydrothermal Method[J]. Journal of Inorganic Materials, 2008 , 23(4) : 673 -676 . DOI: 10.3724/SP.J.1077.2008.00673

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