Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy

Site preference of Cr in the M-type barium ferrite ceramics was monitored by powder X-ray diffraction (XRD), magnetization measurements and Mössbauer spectroscopy. The calcined BaFe12-xCrxO19 powders (x = 0.0-0.8) obtained by the sol gel method were die-pressed into pellets and then sintered at 1300...

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Main Authors: Suriya Ounnunkad, Sukon Phanichphant, Pongtip Winotai, I. Ming Tang
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/61195
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-611952018-09-10T04:10:35Z Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy Suriya Ounnunkad Sukon Phanichphant Pongtip Winotai I. Ming Tang Materials Science Physics and Astronomy Site preference of Cr in the M-type barium ferrite ceramics was monitored by powder X-ray diffraction (XRD), magnetization measurements and Mössbauer spectroscopy. The calcined BaFe12-xCrxO19 powders (x = 0.0-0.8) obtained by the sol gel method were die-pressed into pellets and then sintered at 1300°C in a oxygen atmosphere for 12 hrs. All the phases of the ceramics were of the pure magnetoplumbite structure. The saturation magnetization (Ms) is found to be a function of Cr ion content. The Ms of the ceramics decreases due to the dilution of the magnetic interaction with increasing Cr concentration. The coercivity (H c) of the ceramics increases due to finer grain observed by scanning electron microscopy (SEM). Fitted Mössbauer spectra show that Cr ions preferentially occupy into the 2a, 12k and 4f2 Fe crystallographic sites. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA. 2018-09-10T04:06:24Z 2018-09-10T04:06:24Z 2007-06-01 Journal 15213951 03701972 2-s2.0-34250310485 10.1002/pssb.200642123 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34250310485&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/61195
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Materials Science
Physics and Astronomy
spellingShingle Materials Science
Physics and Astronomy
Suriya Ounnunkad
Sukon Phanichphant
Pongtip Winotai
I. Ming Tang
Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy
description Site preference of Cr in the M-type barium ferrite ceramics was monitored by powder X-ray diffraction (XRD), magnetization measurements and Mössbauer spectroscopy. The calcined BaFe12-xCrxO19 powders (x = 0.0-0.8) obtained by the sol gel method were die-pressed into pellets and then sintered at 1300°C in a oxygen atmosphere for 12 hrs. All the phases of the ceramics were of the pure magnetoplumbite structure. The saturation magnetization (Ms) is found to be a function of Cr ion content. The Ms of the ceramics decreases due to the dilution of the magnetic interaction with increasing Cr concentration. The coercivity (H c) of the ceramics increases due to finer grain observed by scanning electron microscopy (SEM). Fitted Mössbauer spectra show that Cr ions preferentially occupy into the 2a, 12k and 4f2 Fe crystallographic sites. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
format Journal
author Suriya Ounnunkad
Sukon Phanichphant
Pongtip Winotai
I. Ming Tang
author_facet Suriya Ounnunkad
Sukon Phanichphant
Pongtip Winotai
I. Ming Tang
author_sort Suriya Ounnunkad
title Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy
title_short Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy
title_full Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy
title_fullStr Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy
title_full_unstemmed Cr-site preference of BaFe<inf>12-x</inf>Cr<inf>x</inf>O<inf>19</inf> hexaferrite ceramics monitored by Mössbauer spectroscopy
title_sort cr-site preference of bafe<inf>12-x</inf>cr<inf>x</inf>o<inf>19</inf> hexaferrite ceramics monitored by mössbauer spectroscopy
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34250310485&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/61195
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