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Title of Journal: J Supercond Nov Magn

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Abbravation: Journal of Superconductivity and Novel Magnetism

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Springer US

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DOI

10.1007/s00208-003-0459-0

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ISSN

1557-1947

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Sintering Temperature Dependence of Evolving Morph

Authors: Ismayadi Ismail Mansor Hashim
Publish Date: 2012/02/05
Volume: 25, Issue: 5, Pages: 1551-1561
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Abstract

We report on an investigation to unravel morphological and magneticproperty dependence on sintering temperature for samples of Ni05Zn05Fe2O4 synthesized via mechanical alloying The samples were sintered at various sintering temperatures from 800 °C to 1000 °C The morphology of the samples was studied by means of scanning electron microscopy SEM hysteresis and permeability measurement were carried out using a BH hysteresisgraph system and an impedance analyzer respectively The morphological studies show a microstructural evolution with the increase of sintering temperature The relationship between ordered magnetism and the microstructure of the samples show that the important grainsize threshold for the appearance of significant ordered magnetism mainly ferromagnetism is about ≥03 μm We found that two factors sensitively influenced the samples content of ordered magnetism their ferritephase crystallinity degree and the number of grains above the critical grain size

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