Magnetic Phase Separation in Diluted Magnetic System： Zn1-xFexO

Single-phase diluted magnetic systems Zn1-xFexO have been prepared by chemical route. Structural and spectroscopic （UV-Vis and Mossbauer） studies indicate the incorporation of Fe^3＋ ions in the lattice sites. The UV-Vis results point to a systematic increase in the band gap with increasing Fe doping...

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Bibliographic Details
Published in:Acta metallurgica sinica : English letters 2017-06, Vol.30 (6), p.521-527
Main Authors: Mondal, Archita, Sarkar, Sanchari, Giri, Neepamala, Chatterjee, Souvik, Ray, Ruma
Format: Article
Language:English
Subjects:
Antiferromagnetism
Aqueous solutions
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coercivity
Corrosion and Coatings
Dilution
Doping
Ferromagnetism
Lattice sites
Lead
Low temperature
Magnetization
Materials Science
Metallic Materials
Nanoparticles
Nanotechnology
Organometallic Chemistry
Phase separation
Room temperature
Spectroscopy/Spectrometry
Spectrum analysis
Thin films
Tribology
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Summary:Single-phase diluted magnetic systems Zn1-xFexO have been prepared by chemical route. Structural and spectroscopic （UV-Vis and Mossbauer） studies indicate the incorporation of Fe^3＋ ions in the lattice sites. The UV-Vis results point to a systematic increase in the band gap with increasing Fe doping. The room temperature magnetization of Zni-xFexO indicates a paramagnetic behavior which is in accordance with the Mossbauer results, illustrating quadrupolar doublet. At low temperature, the zero-field-cooled （ZFC） magnetization shows a cusp and this temperature increases systematically with decreasing particle size. The weak exchange bias effect manifested by a M-H loop shift is observed for x = 0.03. This shift is accompanied by the enhancement of coercivity. The dc magnetization results suggest the coexis tence of ferromagnetic and antiferromagnetic exchange interactions for low doping of Fe, i.e., for x = 0.03.
ISSN:1006-7191
2194-1289
DOI:10.1007/s40195-017-0530-6