TY - JOUR
T1 - Tailoring of structural, electrical and magnetic properties of BaCo 2 W-type hexaferrites by doping with ZrMn binary mixtures for useful applications
AU - Iqbal, Muhammad Javed
AU - Khan, Rafaqat Ali
AU - Mizukami, Shigemi
AU - Miyazaki, Terunobu
PY - 2011/8
Y1 - 2011/8
N2 - Single-phase W-type hexaferrite, BaCo2Fe16-2x(ZrMn) xO27 (x=0.01.0), has been synthesized by the chemical co-precipitation technique. Mössbauer analysis indicates substitution of Zr ions on tetrahedral (4e and 4fIV) sites and Mn ions on the octahedral '4fVI site' at low-doped concentration when the concentration is increased Mn ions but show preference for the octahedral '2b site'. The highest enhancement in the value of the room temperature resistivity of 2.82×109 cm has been obtained by doping with ZrMn content of x=0.6. The dissipation factor increases from 6.49×103 to 9.97×103 at 10 kHz with the addition of ZrMn dopants. Such materials are potentially suitable for electromagnetic attenuation purposes, for microwave absorption and as radar absorbing material. High values of saturation magnetization (67 emu/g) and remanent magnetization (34.7 emu/g) are obtained for substitution level of x=0.4 making them suitable for data processing devices.
AB - Single-phase W-type hexaferrite, BaCo2Fe16-2x(ZrMn) xO27 (x=0.01.0), has been synthesized by the chemical co-precipitation technique. Mössbauer analysis indicates substitution of Zr ions on tetrahedral (4e and 4fIV) sites and Mn ions on the octahedral '4fVI site' at low-doped concentration when the concentration is increased Mn ions but show preference for the octahedral '2b site'. The highest enhancement in the value of the room temperature resistivity of 2.82×109 cm has been obtained by doping with ZrMn content of x=0.6. The dissipation factor increases from 6.49×103 to 9.97×103 at 10 kHz with the addition of ZrMn dopants. Such materials are potentially suitable for electromagnetic attenuation purposes, for microwave absorption and as radar absorbing material. High values of saturation magnetization (67 emu/g) and remanent magnetization (34.7 emu/g) are obtained for substitution level of x=0.4 making them suitable for data processing devices.
KW - Co-precipitation
KW - Electronic characterization
KW - Hexaferrites
KW - Magnetic properties
KW - Mössbauer analysis
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U2 - 10.1016/j.jmmm.2011.03.009
DO - 10.1016/j.jmmm.2011.03.009
M3 - Article
AN - SCOPUS:79956082443
VL - 323
SP - 2137
EP - 2144
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 16
ER -