This title appears in the Scientific Report :
2011
Please use the identifier:
http://dx.doi.org/10.1016/j.jcrysgro.2010.11.148 in citations.
Flux growth of ZnO crystals doped by transition metals
Flux growth of ZnO crystals doped by transition metals
ZnO crystals doped with Cr, Mn, Fe and Co were grown by the flux method. The prepared crystals revealed no phase separation detectable by X-ray diffraction. Structure properties were characterized by Raman and photoluminescence spectroscopy. For ZnO:Co, Mn and Cr, no spontaneous ferromagnetic moment...
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Personal Name(s): | Sofer, Z. |
---|---|
Sedmidubský, D. / Huber, S. / Hejtmánek, J. / Marysko, M. / Jurek, K. / Mikulics, M. | |
Contributing Institute: |
Halbleiter-Nanoelektronik; IBN-1 JARA-FIT; JARA-FIT |
Published in: | Journal of crystal growth, 314 (2011) |
Imprint: |
Amsterdam [u.a.]
Elsevier
2011
|
DOI: |
10.1016/j.jcrysgro.2010.11.148 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Journal of Crystal Growth
314 |
Subject (ZB): | |
Publikationsportal JuSER |
ZnO crystals doped with Cr, Mn, Fe and Co were grown by the flux method. The prepared crystals revealed no phase separation detectable by X-ray diffraction. Structure properties were characterized by Raman and photoluminescence spectroscopy. For ZnO:Co, Mn and Cr, no spontaneous ferromagnetic moment was observed up to T=2 K whereas for the ZnO:Fe crystals the m(H) curves suggest the existence of 5 nm superparamagnetic iron clusters. At low temperatures the m(H) curves can be interpreted as a superposition of major paramagnetic and minor antiferromagnetic contribution. The paramagnetic part corresponds to the presence of Co2+, Fe3+, Mn2+ ions and small Cr atom clusters. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved. |