Evidence for microwave-induced recrystallization in NiZn ferrites

A series of ferrites was prepared using the microwave method, starting with hematite as precursor in the Ni 1− x Zn x Fe 2O 4 ( x = 0–1) system. After synthesis, the NiZn ferrite samples were irradiated with a microwave field for 90 s. X-ray diffraction (XRD) measurements were performed to yield the...

Full description

Saved in:
Bibliographic Details
Published in:Materials chemistry and physics 2007-02, Vol.101 (2), p.410-414
Main Authors: Sorescu, Monica, Diamandescu, L., Ramesh, P.D., Roy, R., Daly, A., Bruno, Z.
Format: Article
Language:English
Subjects:
Magnetic materials
Microstructure
Mössbauer spectroscopy
Sintering
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A series of ferrites was prepared using the microwave method, starting with hematite as precursor in the Ni 1− x Zn x Fe 2O 4 ( x = 0–1) system. After synthesis, the NiZn ferrite samples were irradiated with a microwave field for 90 s. X-ray diffraction (XRD) measurements were performed to yield the lattice constant as function of the amount x of Zn substitution, before and after irradiation. The lattice parameter was found to increase much slower with increasing x for the microwave irradiated specimens. Mössbauer spectroscopy was performed at room temperature and spectra were analyzed using the binomial distribution. For x = 0.4, 0.5 and 0.6 the resonance lines are much sharper for the irradiated samples and indicate that a microwave-induced recrystallization of the NiZn ferrites occurs in the composition range specified.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2006.07.006