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Title: Less magnetic and larger Zr{sup 4+}–Zn{sup 2+} ions co-substituted structural and magnetic properties of ordered Li{sub 0.5}Fe{sub 2.5}O{sub 4} nanoparticles

Abstract

Graphical abstract: - Highlights: • Zr{sup 4+} and Zn{sup 2+} co-substituted Li{sub 0.5}Fe{sub 2.5}O{sub 4}. • Crystallite size decreased with Zr{sup 4+} and Zn{sup 2+} co-substitution. • Magnetization results exhibit collinear ferrimagnetic structure for x = 0.2. • Yafet–Kittle angle exists between the observed and calculated magneton number. - Abstract: Samples of Zr{sup 4+} and Zn{sup 2+} co-substituted Li{sub 0.5}Fe{sub 2.5}O{sub 4} nanoparticles were prepared by the sol–gel auto-combustion method. The samples were obtained by annealing at relatively low temperature at 600 °C and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM) and Fourier transform infrared (FT-IR) spectroscopy. Lattice parameter, X-ray density, specific surface area and porosity were found to increase, whereas bulk density and crystallite size showed the decreasing trend with the Zr{sup 4+} and Zn{sup 2+} substitution. Cation distribution estimated from XRD results suggests that Zn{sup 2+} and Li{sup +} occupy tetrahedral A- and octahedral B-site respectively, whereas Zr{sup 4+} and Fe{sup 3+} occupy both the available sites. The FT-IR spectra show two major absorption bands at 715–749 cm{sup −1} (ν{sub 1}) and 484–507 cm{sup −1} (ν{sub 2}) related to spinel structure of ferrite. Magnetization results exhibit collinear ferrimagneticmore » structure for x ≤ 0.2, and changed to the non-collinear for x > 0.2. Observed and calculated magneton number shows discrepancy in their values that gives rise to Yafet–Kittle angle for x > 0.2.« less

Authors:
 [1]; ; ;  [2];  [3]
  1. Department of Physics, SMP Mahavidyalaya, Murum, Osmanabad, MS (India)
  2. Materials Research Laboratory, Srikrishna Mahavidyalaya Gunjoti, Omerga, Osmanabad 413613, MS (India)
  3. Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, MS (India)
Publication Date:
OSTI Identifier:
22341795
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 48; Journal Issue: 9; Other Information: Copyright (c) 2013 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; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; ABSORPTION SPECTROSCOPY; BULK DENSITY; CATIONS; FERRITE; FERRITES; FOURIER TRANSFORMATION; INFRARED SPECTRA; IRON IONS; LATTICE PARAMETERS; LITHIUM IONS; MAGNETIC PROPERTIES; NANOPARTICLES; SCANNING ELECTRON MICROSCOPY; SOL-GEL PROCESS; TRANSMISSION ELECTRON MICROSCOPY; X RADIATION; X-RAY DIFFRACTION; ZINC IONS; ZIRCONIUM IONS

Citation Formats

Gurav, S. K., Shirsath, Sagar E., E-mail: shirsathsagar@hotmail.com, Kadam, R. H., Patange, S. M., Lohar, K. S., and Mane, D. R. Less magnetic and larger Zr{sup 4+}–Zn{sup 2+} ions co-substituted structural and magnetic properties of ordered Li{sub 0.5}Fe{sub 2.5}O{sub 4} nanoparticles. United States: N. p., 2013. Web. doi:10.1016/J.MATERRESBULL.2013.05.047.
Gurav, S. K., Shirsath, Sagar E., E-mail: shirsathsagar@hotmail.com, Kadam, R. H., Patange, S. M., Lohar, K. S., & Mane, D. R. Less magnetic and larger Zr{sup 4+}–Zn{sup 2+} ions co-substituted structural and magnetic properties of ordered Li{sub 0.5}Fe{sub 2.5}O{sub 4} nanoparticles. United States. doi:10.1016/J.MATERRESBULL.2013.05.047.
Gurav, S. K., Shirsath, Sagar E., E-mail: shirsathsagar@hotmail.com, Kadam, R. H., Patange, S. M., Lohar, K. S., and Mane, D. R. Sun . "Less magnetic and larger Zr{sup 4+}–Zn{sup 2+} ions co-substituted structural and magnetic properties of ordered Li{sub 0.5}Fe{sub 2.5}O{sub 4} nanoparticles". United States. doi:10.1016/J.MATERRESBULL.2013.05.047.
@article{osti_22341795,
title = {Less magnetic and larger Zr{sup 4+}–Zn{sup 2+} ions co-substituted structural and magnetic properties of ordered Li{sub 0.5}Fe{sub 2.5}O{sub 4} nanoparticles},
author = {Gurav, S. K. and Shirsath, Sagar E., E-mail: shirsathsagar@hotmail.com and Kadam, R. H. and Patange, S. M. and Lohar, K. S. and Mane, D. R.},
abstractNote = {Graphical abstract: - Highlights: • Zr{sup 4+} and Zn{sup 2+} co-substituted Li{sub 0.5}Fe{sub 2.5}O{sub 4}. • Crystallite size decreased with Zr{sup 4+} and Zn{sup 2+} co-substitution. • Magnetization results exhibit collinear ferrimagnetic structure for x = 0.2. • Yafet–Kittle angle exists between the observed and calculated magneton number. - Abstract: Samples of Zr{sup 4+} and Zn{sup 2+} co-substituted Li{sub 0.5}Fe{sub 2.5}O{sub 4} nanoparticles were prepared by the sol–gel auto-combustion method. The samples were obtained by annealing at relatively low temperature at 600 °C and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), vibrating sample magnetometry (VSM) and Fourier transform infrared (FT-IR) spectroscopy. Lattice parameter, X-ray density, specific surface area and porosity were found to increase, whereas bulk density and crystallite size showed the decreasing trend with the Zr{sup 4+} and Zn{sup 2+} substitution. Cation distribution estimated from XRD results suggests that Zn{sup 2+} and Li{sup +} occupy tetrahedral A- and octahedral B-site respectively, whereas Zr{sup 4+} and Fe{sup 3+} occupy both the available sites. The FT-IR spectra show two major absorption bands at 715–749 cm{sup −1} (ν{sub 1}) and 484–507 cm{sup −1} (ν{sub 2}) related to spinel structure of ferrite. Magnetization results exhibit collinear ferrimagnetic structure for x ≤ 0.2, and changed to the non-collinear for x > 0.2. Observed and calculated magneton number shows discrepancy in their values that gives rise to Yafet–Kittle angle for x > 0.2.},
doi = {10.1016/J.MATERRESBULL.2013.05.047},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 9,
volume = 48,
place = {United States},
year = {2013},
month = {9}
}