1 Ocak 2016 Dergi makalesi Açık Erişim

Auwal, I. A.; Erdemi, H.; Sozeri, H.; Gungunes, H.; Baykal, A.

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  <dc:creator>Auwal, I. A.</dc:creator>
  <dc:creator>Erdemi, H.</dc:creator>
  <dc:creator>Sozeri, H.</dc:creator>
  <dc:creator>Gungunes, H.</dc:creator>
  <dc:creator>Baykal, A.</dc:creator>
  <dc:date>2016-01-01</dc:date>
  <dc:description>In the present study, SrBixFe12-xO19 (0.0 &lt;= x &lt;= 1.0) nanomaterials were successfully synthesized by using chemical co-precipitation method. Products were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Vibrating sample magnetometer (VSM), Mossbauer spectroscopy, AC conductivity and dielectric measurements. The crystal structural information studied by X-ray diffraction (XRD) indicated the formation of single phase pure hexagonal structure, while electron-dispersive X-ray spectroscopy (EDX) revealed the stoichiometric ratio among Bi, Sr, Fe elements. The crystallite sizes of the products were in the range of 65-82 nm. VSM analysis showed a tendency in saturation magnetization as Bi2O3 concentration raises, which can be ascribed to preferential site occupied by Bi3+ ions. The frequency-dependent ac conductivity plots exhibited similar trends for all samples. A significant temperature-dependent behavior was only observed at low and medium frequencies. The replacement of non-magnetic Bi3+ ions by Fe3+ ones having magnetic moment of 5 mu B decrease the magnetic moment of 4f1 site. The AC conductivity increases with frequency as hopping of the charge carriers increases between Fe2+ and Fe3+ The DC conductivity exhibited an improvement with increasing temperature and Bi content, and the highest conductivity was measured as 2.84 x 10(-9) S cm(-1) for x=0.8 at 120 degrees C. The variation of dielectric constant, dielectric loss and tangent loss was observed with the frequency and temperature due to change of electrical conductivity as x changes. (C) 2016 Elsevier B.V. All rights reserved.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/98693</dc:identifier>
  <dc:identifier>oai:zenodo.org:98693</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 412 69-82</dc:source>
  <dc:title>Magnetic and dielectric properties of Bi3+ substituted SrFe12O19 hexaferrite</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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