Eur. Phys. J. Appl. Phys.
Volume 50, Number 3, June 2010
|Number of page(s)||4|
|Section||Spintronics, Magnetism and Superconductivity|
|Published online||23 April 2010|
Study of the substitution effect of Mn doped in ZnO matrix
LPS, Physics Department, Faculty of Sciences, BP 1796, Fès, Morocco
2 Physics Department, University of Minho, 4710-057 Braga, Portugal
3 Institut Néel, CNRS, Université J. Fourier, BP 166, 38042 Grenoble, France
Corresponding author: email@example.com
Accepted: 15 March 2010
Published online: 23 April 2010
Zn1-xMnxO (x = 0.01, 0.02, 0.05, 0.1, and 0.15) powders were prepared by solid-state reaction processes. The structural and magnetic properties of the powders were investigated. X-ray diffraction (XRD) analysis of the samples indicates the presence of wurtzite crystal structure similar to pure ZnO and absence of any other secondary phase till 5% Mn doping. This suggests that doped Mn2+ ions substitute Zn2+ sites. However, Raman results revealed the presence of secondary phase even at very low Mn doping (2%), which demonstrates that Mn does not incorporate completely the ZnO lattice. The powders exhibit ferromagnetism at low temperatures and paramagnetic at room temperature. Transition from ferromagnetic to paramagnetic is highlighted by measurements at 230 K.
© EDP Sciences, 2010
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