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Publikācija: Electric and Dielectric Properties of Nanostructured Stoichiometric and Excess-Iron Ni–Zn Ferrites

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language Electric and Dielectric Properties of Nanostructured Stoichiometric and Excess-Iron Ni–Zn Ferrites
Field of research 2. Engineering and technology
Sub-field of research 2.5 Materials engineering
Authors Andris Šutka
Gundars Mežinskis
Andrejs Lūsis
Keywords Ni-Zn ferrite, electric properties, dielectric properties, nanomaterials
Abstract In this paper, we report a study of the effect of excess iron on structural, microstructural, electric and dielectric properties of the nanostructured Ni–Zn ferrites Ni1-xZnxFe2+zO4- of different compositions with x = 0, 0.3, 0.5, 0.7, 1 and z = 0, 0.1. The structural and microstructural properties are estimated from x-ray diffraction and atomic force microscopy (AFM) data. The average grain size, evaluated from AFM topographical analysis, is found to be below 70 nm. The samples exhibit low values of dielectric constant and dielectric loss and a high resistivity. Contrary to earlier conclusions regarding microstructured Ni–Zn ferrites, in nanostructured Ni–Zn ferrites sintered at relatively low temperature and duration, the excess of iron in the composition increases the electrical resistivity and reduces the dielectric constant and loss tangent.
DOI: 10.1088/0031-8949/87/02/025601
Hyperlink: http://iopscience.iop.org/1402-4896/87/2/025601?fromSearchPage=true 
Reference Šutka, A., Mežinskis, G., Lūsis, A. Electric and Dielectric Properties of Nanostructured Stoichiometric and Excess-Iron Ni–Zn Ferrites. Physica Scripta, 2013, Vol.87, No.2, pp.025601-025601. ISSN 0031-8949. e-ISSN 1402-4896. Available from: doi:10.1088/0031-8949/87/02/025601
Additional information Citation count:
ID 15234