TY - JOUR
T1 - Synthesis and magnetic properties of ferroxplana type ferrite
AU - Sakaguchi, O.
AU - Kagotani, T.
AU - Book, D.
AU - Nakamura, H.
AU - Sugimoto, S.
AU - Okada, M.
AU - Homma, M.
PY - 1996
Y1 - 1996
N2 - The purposes of this study are to investigate the sintering conditions of single Z-type with high electrical resistivity for enhancing the resonance frequency. A mixture of BaCOs. CoO and FezOj powders (final product : BajCo2Fe24O4i) was calcined at 1273K, sintered at 1473-1623K and then furnace-cooled. The sintering atmospheres used vacuum, Ar, Oi, air and mixtures of Oj and Ar. The following properties of sintered samples were examined about bulk density, saturation magnetization, magnetic permeability, dc electrical resistivity and also phase composition. The single phase Z-type ferrite was found in the sample sintered under oxygen at O.lMPa. The sample sintered at 1573K for 24h under oxygen at O.lMPa showed a higher resonance frequency over l.SGHz for having high electrical resistivity and 50% higher value of the real part of permeability than the previously reported results.
AB - The purposes of this study are to investigate the sintering conditions of single Z-type with high electrical resistivity for enhancing the resonance frequency. A mixture of BaCOs. CoO and FezOj powders (final product : BajCo2Fe24O4i) was calcined at 1273K, sintered at 1473-1623K and then furnace-cooled. The sintering atmospheres used vacuum, Ar, Oi, air and mixtures of Oj and Ar. The following properties of sintered samples were examined about bulk density, saturation magnetization, magnetic permeability, dc electrical resistivity and also phase composition. The single phase Z-type ferrite was found in the sample sintered under oxygen at O.lMPa. The sample sintered at 1573K for 24h under oxygen at O.lMPa showed a higher resonance frequency over l.SGHz for having high electrical resistivity and 50% higher value of the real part of permeability than the previously reported results.
KW - Dc electrical resistivity
KW - Frequency dispersion
KW - Magnetic properties
KW - Single phase
KW - Sintering atmosphere
KW - Synthesis
KW - Z-type ferrite
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U2 - 10.2320/matertrans1989.37.878
DO - 10.2320/matertrans1989.37.878
M3 - Article
AN - SCOPUS:0030125379
SN - 0916-1821
VL - 37
SP - 878
EP - 882
JO - materials transactions, jim
JF - materials transactions, jim
IS - 4
ER -