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Title: Co{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (0 ≤ x ≤ 1) nanocrystalline solid solution prepared by the polyol method: Characterization and magnetic properties

Abstract

Highlights: ► Co–Zn ferrite nanoparticles were produced by soft chemistry. ► Cation distribution deviation from the thermodynamically stable one was evidenced. ► The magnetic characteristics were affected and differ from those of bulks. -- Abstract: Highly crystalline stoichiometric Co{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (0 ≤ x ≤ 1) nanoparticles were successfully synthesized by the polyol process. X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), transmission electron microscopy (TEM), infrared spectroscopy (IR), zero-field {sup 57}Fe Mössbauer spectrometry and magnetic measurements using a SQUID magnetometer were employed to investigate the effect of the substitution of Zn{sup 2+} ions for Co{sup 2+} ones on the structure, and the magnetic properties of the cobalt ferrite, CoFe{sub 2}O{sub 4}. The unit cell parameter almost increases linearly with increasing Zn concentration, x, following Vegard's law. The red and blue shifts observed for the metal-oxygen ν{sub 1} and ν{sub 2}IR vibration bands, respectively, were consistent with the preferential entrance of Zn{sup 2+} ions in tetrahedral sites. Besides, detailed magnetic investigation in correlation with the cation distribution has been reported. All the particles exhibit superparamagnetic behaviour at room temperature. In addition, the magnetic characteristics (blocking temperature, saturation magnetization, coercivity, Curie temperature) clearly depend on the chemical composition and cationmore » distribution. Both the blocking temperature and Curie temperature decrease drastically with Zn composition, x, increase. Further, the saturation magnetization follows an almost bulk-like behaviour with values notably larger than that of the bulk, mainly attributed to cation distribution deviation.« less

Authors:
 [1];  [1];  [2];  [1];  [3]; ;  [4]
  1. SSMI (99/UR12-30), Faculté des Sciences de Bizerte, 7021 Jarzouna (Tunisia)
  2. ITODYS, Université Paris Diderot, CNRS UMR-7086, 75205 Paris (France)
  3. LISA, Université Paris Diderot, Université Paris 12, CNRS UMR-7583, 75205 Paris (France)
  4. LUNAM, Université du Maine, IMMM CNRS UMR-6283, 72085 Le Mans (France)
Publication Date:
OSTI Identifier:
22215749
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 47; Journal Issue: 9; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTROSCOPY; CATIONS; CHEMICAL COMPOSITION; COBALT; COBALT IONS; COBALT OXIDES; CRYSTALS; CURIE POINT; FERRITE; FERRITES; INFRARED SPECTRA; MAGNETIC PROPERTIES; NANOSTRUCTURES; SOLID SOLUTIONS; SQUID DEVICES; SUPERPARAMAGNETISM; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY FLUORESCENCE ANALYSIS; ZINC IONS

Citation Formats

Tahar, L. Ben, Basti, H., ITODYS, Université Paris Diderot, CNRS UMR-7086, 75205 Paris, Herbst, F., Smiri, L. S., Quisefit, J. P., Yaacoub, N., Grenèche, J. M., and Ammar, S., E-mail: ammarmer@univ-paris-diderot.fr. Co{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (0 ≤ x ≤ 1) nanocrystalline solid solution prepared by the polyol method: Characterization and magnetic properties. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.04.080.
Tahar, L. Ben, Basti, H., ITODYS, Université Paris Diderot, CNRS UMR-7086, 75205 Paris, Herbst, F., Smiri, L. S., Quisefit, J. P., Yaacoub, N., Grenèche, J. M., & Ammar, S., E-mail: ammarmer@univ-paris-diderot.fr. Co{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (0 ≤ x ≤ 1) nanocrystalline solid solution prepared by the polyol method: Characterization and magnetic properties. United States. doi:10.1016/J.MATERRESBULL.2012.04.080.
Tahar, L. Ben, Basti, H., ITODYS, Université Paris Diderot, CNRS UMR-7086, 75205 Paris, Herbst, F., Smiri, L. S., Quisefit, J. P., Yaacoub, N., Grenèche, J. M., and Ammar, S., E-mail: ammarmer@univ-paris-diderot.fr. Sat . "Co{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (0 ≤ x ≤ 1) nanocrystalline solid solution prepared by the polyol method: Characterization and magnetic properties". United States. doi:10.1016/J.MATERRESBULL.2012.04.080.
@article{osti_22215749,
title = {Co{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (0 ≤ x ≤ 1) nanocrystalline solid solution prepared by the polyol method: Characterization and magnetic properties},
author = {Tahar, L. Ben and Basti, H. and ITODYS, Université Paris Diderot, CNRS UMR-7086, 75205 Paris and Herbst, F. and Smiri, L. S. and Quisefit, J. P. and Yaacoub, N. and Grenèche, J. M. and Ammar, S., E-mail: ammarmer@univ-paris-diderot.fr},
abstractNote = {Highlights: ► Co–Zn ferrite nanoparticles were produced by soft chemistry. ► Cation distribution deviation from the thermodynamically stable one was evidenced. ► The magnetic characteristics were affected and differ from those of bulks. -- Abstract: Highly crystalline stoichiometric Co{sub 1−x}Zn{sub x}Fe{sub 2}O{sub 4} (0 ≤ x ≤ 1) nanoparticles were successfully synthesized by the polyol process. X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), transmission electron microscopy (TEM), infrared spectroscopy (IR), zero-field {sup 57}Fe Mössbauer spectrometry and magnetic measurements using a SQUID magnetometer were employed to investigate the effect of the substitution of Zn{sup 2+} ions for Co{sup 2+} ones on the structure, and the magnetic properties of the cobalt ferrite, CoFe{sub 2}O{sub 4}. The unit cell parameter almost increases linearly with increasing Zn concentration, x, following Vegard's law. The red and blue shifts observed for the metal-oxygen ν{sub 1} and ν{sub 2}IR vibration bands, respectively, were consistent with the preferential entrance of Zn{sup 2+} ions in tetrahedral sites. Besides, detailed magnetic investigation in correlation with the cation distribution has been reported. All the particles exhibit superparamagnetic behaviour at room temperature. In addition, the magnetic characteristics (blocking temperature, saturation magnetization, coercivity, Curie temperature) clearly depend on the chemical composition and cation distribution. Both the blocking temperature and Curie temperature decrease drastically with Zn composition, x, increase. Further, the saturation magnetization follows an almost bulk-like behaviour with values notably larger than that of the bulk, mainly attributed to cation distribution deviation.},
doi = {10.1016/J.MATERRESBULL.2012.04.080},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 9,
volume = 47,
place = {United States},
year = {2012},
month = {9}
}