Hydrothermal Synthesis of Fe and Mn Doped SnO2 and Its Magnetic Structures

Chem. J. Chinese Universities

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Hydrothermal Synthesis of Fe and Mn Doped SnO₂ and Its Magnetic Structures

LIU Jian-Fen^1,3, CHAI Ping¹, WANG Zhong-Li¹, LIU Xiao-Juan¹, XING Xian-Ran², MENG Jian¹*

1. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
2. Department of Physical Chemistry, Beijing University of Science & Technology, Beijing 100083, China;
3. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2006-10-30 Revised:1900-01-01 Online:2007-05-10 Published:2007-05-10
Contact: MENG Jian

Abstract

Abstract: The dilute magnetic semiconductor of Sn_1-x-yMn_xFe_yO₂(0≤x≤0.10, 0≤y≤0.10) were synthesized with the hydrothermal method using SnCl₄, Mn(CH₃COO)₂·4H₂O and FeCl₃·6H₂O as the raw materials. The structure, morphologies and magnetic properties of the sample were characterized via X-ray powder diffractometer(XRD), transmission electron microscopy(TEM), Raman spectrum and superconducting and quantum interference device(SQUIT), and Mssbeaur spectrum. No secondary phase was found in the XRD spectrum. The morphology of the samples is affected by the kind or the mount of transition metal. The local vibrating model of Mn Positioned SnO₂ sites was found in Raman spectrum. The measured magnetic results indicate that when x=0.10, y=0, the sample exhibits strong magnetization in low-temperature(5 K), but the magnetization decrease rapidly at room temperature; In contrast, when x=0, y=0.1, the sample's magnetization and coercivity are both small, but being temperature independent. Mössbeaur spectra indicates that part of the Fe is ferromagnetic coupled, and the simulating results indicate that the ferromagnetic character is intrinsic. The magnetization of the Mn and Fe codoping system decrease with the decrease of x and increase of y, However, the coercivity is comparatively enhanced in the codoping system.

Key words: Dilute magnetic semiconductor, Tin dioxide, Hydrothermal method, Ferromagnetism

CLC Number:

O613.3

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LIU Jian-Fen^1,3, CHAI Ping¹, WANG Zhong-Li¹, LIU Xiao-Juan¹, XING Xian-Ran², MENG Jian¹*. Hydrothermal Synthesis of Fe and Mn Doped SnO₂ and Its Magnetic Structures[J]. Chem. J. Chinese Universities, doi: .

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Hydrothermal Synthesis of Fe and Mn Doped SnO₂ and Its Magnetic Structures

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