Publication: Coercivity of the Co-precipitated prepared hexaferrites, BaFe <inf>12-2x</inf>Co<inf>x</inf>Sn<inf>x</inf>O<inf>19</inf>
Issued Date
2006-05-01
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ISSN
03744884
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2-s2.0-33745045241
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of the Korean Physical Society. Vol.48, No.5 (2006), 939-945
Suggested Citation
Siriphan Nilpairach, Werasak Udomkichdaecha, I. Ming Tang Coercivity of the Co-precipitated prepared hexaferrites, BaFe <inf>12-2x</inf>Co<inf>x</inf>Sn<inf>x</inf>O<inf>19</inf>. Journal of the Korean Physical Society. Vol.48, No.5 (2006), 939-945. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/23919
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Title
Coercivity of the Co-precipitated prepared hexaferrites, BaFe <inf>12-2x</inf>Co<inf>x</inf>Sn<inf>x</inf>O<inf>19</inf>
Abstract
Two series of Co-Sn doped M-type barium hexaferrites were fabricated using a co-precipitation method. Hexaferrites having the nominal composition BaFe 12O19 were soaked at various temperatures (950, 1000, 1050, 1100. 1150 and 1200°C) for four h. The particle sizes of the resulting ferrites were seen to increase as the soaking temperatures were raised. A second series having the composition BaFe12-2xSnxCo xO19 (z = 0.0, 0.25, 0.50, 0.75 and 1.00) were also fabricated using one soaking temperature (1000°C). EDX (Energy dispersive X-ray) measurements were used to determine the actual chemical compositions of the specimens. The coercivities of the specimens of both series were measured with a vibrating samples magnetometer. We observed that the coercivities of the undoped series decreased as the soaking temperature increased and that the coercivities of the doped series increased as the impurity concentration increased.