Magnetic resonance in the Zn1−xMnxIn2Se4 dilute magnetic semiconductor system

An electron paramagnetic resonance (EPR) study of the Mn concentration and temperature in the range of 4 K T300 K for the dilute semimagnetic semiconductor Zn1-xMnxIn2Se4 is reported. The EPR spectra were measured for the concentrations 0.01 < x < 1.0. For low Mn content the spectrum contains...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2005-05, Vol.17 (17), p.2755-2762
Main Authors: Mantilla, J C, Pontuschka, W M, Gamarra, L F, Salvador, V L, Couto, S G, Costa-Filho, A J, Brito, G E S, Sagredo, V, Bindilatti, V
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron paramagnetic resonance and relaxation
Exact sciences and technology
Magnetic properties and materials
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Magnetic semiconductors
Physics
Studies of specific magnetic materials
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Summary:An electron paramagnetic resonance (EPR) study of the Mn concentration and temperature in the range of 4 K T300 K for the dilute semimagnetic semiconductor Zn1-xMnxIn2Se4 is reported. The EPR spectra were measured for the concentrations 0.01 < x < 1.0. For low Mn content the spectrum contains multiple resonances at g = 2, g~3 and g~5. The behaviour of the g = 2 signal linewidth Hpp as a function of temperature was studied and it was related to the fitting parameters at the critical temperature and the Curie point. The j parameter of the modified expression of Silva was obtained and its role is shown for the particular transition of this system.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/17/17/025