Investigation of the iron site localization in doped ZnO

Journal Article · Sun Jan 15 04:00:00 EST 2012 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.11.006· OSTI ID:21612866

Ferreira, L P ^[1]; Borges, R P; Godinho, M ^[2]

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1. CFMC, FCUL, 1749-016 Lisboa, Dep. Fisica, FCTUC, 3004-516 Coimbra (Portugal)
2. CFMC/Dep. Fisica, FCUL, 1749-016 Lisboa (Portugal)

Iron doped (5%) ZnO powders were prepared by hydrothermal and combustion methods. Subsequent heating treatments on these samples were performed under air and also under a reductive atmosphere. Powder XRD, Moessbauer spectroscopy and magnetization studies were used to characterize the products and investigate the localization of iron ions in the ZnO lattice. It was shown that a mixture with a ZnFe{sub 2}O{sub 4} type phase was obtained when the sample was prepared by the hydrothermal method, while Fe{sup 3+} occupy tetrahedral sites of the ZnO lattice in the case of the sample obtained by the combustion method. The magnetic measurements show that no ferromagnetism was detected in the iron doped ZnO compound, neither in the as prepared state nor after reduction. - Graphical abstract: Zn{sub 0.95}Fe{sub 0.05}O obtained by a combustion method and after reduction under hydrogen atmosphere. Highlights: Black-Right-Pointing-Pointer Iron doped ZnO was successfully synthesized by a combustion method. Black-Right-Pointing-Pointer The Fe{sup 3+} tetrahedral coordination was deduced from Moessbauer results. Black-Right-Pointing-Pointer The wurtzite structure was maintained after partial reduction of Fe{sup 3+} to Fe{sup 2+}.

• OSTI ID: 21612866
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Vol. 185; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COHERENT SCATTERING
COMBUSTION
DIFFRACTION
DOPED MATERIALS
ELEMENTS
FERROMAGNETISM
HYDROTHERMAL SYNTHESIS
IONS
IRON
IRON IONS
MAGNETIC SEMICONDUCTORS
MAGNETISM
MAGNETIZATION
MATERIALS
METALS
MOESSBAUER EFFECT
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REDUCTION
SCATTERING
SEMICONDUCTOR MATERIALS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
X-RAY DIFFRACTION
ZINC COMPOUNDS
ZINC OXIDES