TY - JOUR
T1 - Magnetic properties of La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method
AU - Kikuchi, Takeyuki
AU - Nakamura, Tatsuya
AU - Yamasaki, Tohru
AU - Nakanishi, Makoto
AU - Fujii, Tatsuo
AU - Takada, Jun
AU - Ikeda, Yasunori
PY - 2010/8/1
Y1 - 2010/8/1
N2 - Magnetic properties of La-Co substituted M-type strontium hexaferrites were studied. The samples were prepared by polymerizable complex method. Crystal structure of samples has been investigated by powder X-ray diffraction (XRD). Single-phase M-type strontium hexaferrites with chemical composition of Sr1.05-xLaxFe12-xCoxO19 (x=0-0.4) were formed by heating at 1173 K for 24 h in air. Magnetic properties were discussed by measurements of M-H curves with vibrating sample magnetometer (VSM). La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method showed typical magnetic hysteresis of hard ferrite. The coercive force increased significantly by La-Co substitution with polymerizable complex method. Maximum coercive force achieved in this study is 8.0 kOe (640 kA/m). Scanning electron microscopy revealed that the prepared ferrite particles have plate-like shape of diameter range between 20 and 500 nm.
AB - Magnetic properties of La-Co substituted M-type strontium hexaferrites were studied. The samples were prepared by polymerizable complex method. Crystal structure of samples has been investigated by powder X-ray diffraction (XRD). Single-phase M-type strontium hexaferrites with chemical composition of Sr1.05-xLaxFe12-xCoxO19 (x=0-0.4) were formed by heating at 1173 K for 24 h in air. Magnetic properties were discussed by measurements of M-H curves with vibrating sample magnetometer (VSM). La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method showed typical magnetic hysteresis of hard ferrite. The coercive force increased significantly by La-Co substitution with polymerizable complex method. Maximum coercive force achieved in this study is 8.0 kOe (640 kA/m). Scanning electron microscopy revealed that the prepared ferrite particles have plate-like shape of diameter range between 20 and 500 nm.
KW - La-Co substitution
KW - M-type strontium hexaferrite
KW - Polymerizable complex method
UR - http://www.scopus.com/inward/record.url?scp=77953130415&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953130415&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2010.02.041
DO - 10.1016/j.jmmm.2010.02.041
M3 - Article
AN - SCOPUS:77953130415
SN - 0304-8853
VL - 322
SP - 2381
EP - 2385
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 16
ER -