稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2013年
10期
983-987
,共5页
李颉%张怀武%李强%李元勋%郁国良
李頡%張懷武%李彊%李元勛%鬱國良
리힐%장부무%리강%리원훈%욱국량
M-type barium ferrites%La-Co substitution%magnetic properties%rare earths
La-Co substituted M-type barium ferrites (BaM) were prepared by traditional solid state method and sintered at low tem-perature (1173 K). X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) were employed to investigate the influence of La-Co on the structure and magnetic properties of the samples. By sintering at 1173 K for 6 h in air, single phase M-type barium ferrites with chemical composition of Ba(LaCo)xFe12-2xO19 (x=0.0-0.5) were formed. M-H curves showed that the magnetic properties of barium ferrites were obviously effected by La-Co substitution. The saturation magnetization (Ms) and coercivity (Hc) reached the maximum value of 65.15 Am2/kg and 4165 Oe, respectively. This behavior was attributed to the sites of La-Co substitutions and the particles size. SEM revealed that the shape of ferrite particles was influenced by La-Co substitution.
