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Flux growth of ZnO crystals doped by transition metals

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    SYSNO ASEP0374228
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleFlux growth of ZnO crystals doped by transition metals
    Author(s) Sofer, Z. (CZ)
    Sedmidubský, D. (CZ)
    Huber, Š. (CZ)
    Hejtmánek, Jiří (FZU-D) RID, ORCID
    Maryško, Miroslav (FZU-D) RID
    Jurek, Karel (FZU-D) RID, ORCID, SAI
    Mikulics, M. (DE)
    Source TitleJournal of Crystal Growth. - : Elsevier - ISSN 0022-0248
    Roč. 314, č. 1 (2011), 123-128
    Number of pages6 s.
    Languageeng - English
    CountryNL - Netherlands
    Keywordsgrowth from high temperature solutions ; oxides ; zinc compounds ; magnetic materials ; semiconducting ii–vi materials
    Subject RIVBM - Solid Matter Physics ; Magnetism
    R&D ProjectsGA104/09/0621 GA ČR - Czech Science Foundation (CSF)
    CEZAV0Z10100521 - FZU-D (2005-2011)
    UT WOS000286853400025
    DOI10.1016/j.jcrysgro.2010.11.148
    AnnotationZnO 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 andCr,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 5nm 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.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2012
Number of the records: 1