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Title: Structural, magneto-optical properties and cation distribution of SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites

Abstract

Highlights: • SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites have been prepared by sol-gel autocombustion. • XRD patterns show that SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites exhibit hexagonal structure. • The intrinsic coercivity (H{sub ci}) above 15000 Oe reveals that all samples are magnetically hard materials. - Abstract: SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites were produced via sol-gel auto combustion. XRD patterns show that all the samples are single-phase M-type strontium hexaferrite (SrM). The magnetic hysteresis (σ-H) loops revealed the ferromagnetic nature of nanoparticles (NPs). The coercive field decreases from 4740 Oe to 2720 Oe with increasing ion content. In particular, SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} NPs with x = 0.0, 0.1, 0.2 have suitable magnetic characteristics (σ{sub s} = 62.03–64.72 emu/g and H{sub c} = 3105–4740 Oe) for magnetic recording. The intrinsic coercivity (H{sub ci}) above 15000 Oe reveals that all samples are magnetically hard materials. Tauc plots were used to specify the direct optical energy band gap (E{sub g}) of NPs. The E{sub g} values are between 1.76 eV and 1.85 eV. {sup 57}Fe Mössbauer spectroscopy data, the variation inmore » line width, isomer shift, quadrupole splitting, relative area and hyperfine magnetic field values on Bi{sup 3+} La{sup 3+} and Y{sup 3+} substitutions have been determined.« less

Authors:
 [1];  [2];  [3];  [4];  [5];  [1]
  1. Department of Chemistry, Fatih University, 34500 B. Çekmece, İstanbul (Turkey)
  2. Department of Physics, Hitit University, 19030 Çevre Yolu Bulvarı, Çorum (Turkey)
  3. Department of Physics, Fatih University, 34500 B. Çekmece, İstanbul (Turkey)
  4. Spin Device Technology Center, Faculty of Engineering, Shinshu University, 380-8553 Nagano (Japan)
  5. Department of Physics Engineering, Istanbul Technical University, 34469 Maslak (Turkey)
Publication Date:
OSTI Identifier:
22581603
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 80; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION SPECTROSCOPY; BISMUTH COMPOUNDS; BISMUTH IONS; COERCIVE FORCE; CONCENTRATION RATIO; FERRATES; IRON 57; ISOMER SHIFT; LANTHANUM IONS; LINE WIDTHS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; NANOPARTICLES; OPTICAL PROPERTIES; SOL-GEL PROCESS; SYNTHESIS; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS; YTTRIUM IONS

Citation Formats

Auwal, I.A., Güngüneş, H., Güner, S., Shirsath, Sagar E., Sertkol, M., and Baykal, A., E-mail: hbaykal@fatih.edu.tr. Structural, magneto-optical properties and cation distribution of SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites. United States: N. p., 2016. Web. doi:10.1016/J.MATERRESBULL.2016.03.028.
Auwal, I.A., Güngüneş, H., Güner, S., Shirsath, Sagar E., Sertkol, M., & Baykal, A., E-mail: hbaykal@fatih.edu.tr. Structural, magneto-optical properties and cation distribution of SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites. United States. doi:10.1016/J.MATERRESBULL.2016.03.028.
Auwal, I.A., Güngüneş, H., Güner, S., Shirsath, Sagar E., Sertkol, M., and Baykal, A., E-mail: hbaykal@fatih.edu.tr. 2016. "Structural, magneto-optical properties and cation distribution of SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites". United States. doi:10.1016/J.MATERRESBULL.2016.03.028.
@article{osti_22581603,
title = {Structural, magneto-optical properties and cation distribution of SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites},
author = {Auwal, I.A. and Güngüneş, H. and Güner, S. and Shirsath, Sagar E. and Sertkol, M. and Baykal, A., E-mail: hbaykal@fatih.edu.tr},
abstractNote = {Highlights: • SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites have been prepared by sol-gel autocombustion. • XRD patterns show that SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites exhibit hexagonal structure. • The intrinsic coercivity (H{sub ci}) above 15000 Oe reveals that all samples are magnetically hard materials. - Abstract: SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} (0.0 ≤ x ≤ 0.33) hexaferrites were produced via sol-gel auto combustion. XRD patterns show that all the samples are single-phase M-type strontium hexaferrite (SrM). The magnetic hysteresis (σ-H) loops revealed the ferromagnetic nature of nanoparticles (NPs). The coercive field decreases from 4740 Oe to 2720 Oe with increasing ion content. In particular, SrBi{sub x}La{sub x}Y{sub x}Fe{sub 12−3x}O{sub 19} NPs with x = 0.0, 0.1, 0.2 have suitable magnetic characteristics (σ{sub s} = 62.03–64.72 emu/g and H{sub c} = 3105–4740 Oe) for magnetic recording. The intrinsic coercivity (H{sub ci}) above 15000 Oe reveals that all samples are magnetically hard materials. Tauc plots were used to specify the direct optical energy band gap (E{sub g}) of NPs. The E{sub g} values are between 1.76 eV and 1.85 eV. {sup 57}Fe Mössbauer spectroscopy data, the variation in line width, isomer shift, quadrupole splitting, relative area and hyperfine magnetic field values on Bi{sup 3+} La{sup 3+} and Y{sup 3+} substitutions have been determined.},
doi = {10.1016/J.MATERRESBULL.2016.03.028},
journal = {Materials Research Bulletin},
number = ,
volume = 80,
place = {United States},
year = 2016,
month = 8
}
  • The clustered inhomogeneity observed in ferromagnetic materials deepens our concepts of the actual structure of solids and opens new possibilities for controlling their properties. These investigations were made for the purpose of establishment of the relationship between clusterization and magnetic properties of SrO-nFe{sub 2}O{sub 3}, where 5.4 < n < 6.2, metal oxide magnetically hard strontium ferrites.
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