Influence of La-Co substitution on the structure and magnetic properties of low-temperature sintered M-type barium ferrites

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 st...

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Bibliographic Details
Published inJournal of rare earths Vol. 31; no. 10; pp. 983 - 987
Main Authors LI, Jie, ZHANG, Huaiwu, LI, Qiang, LI, Yuanxun, YU, Guoliang
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.10.2013
Subjects
La-Co substitution
M-type barium ferrites
magnetic properties
rare earths
低温烧结
扫描电子显微镜
振动样品磁强计
结构
钡铁氧体
钴取代
magnetic properties
M-type barium ferrites
La-Co substitution
rare earths
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Summary: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）xFel〉z~Oj9 （x=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 （He） reached the maximum value of 65.15 AmZ/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.
Bibliography:M-type barium fenites; La-Co substitution; magnetic properties; rare earths
11-2788/TF
LI Jie , ZHANG Huaiwu , LI Qiang , LI Yuanxun , YU Guoliang （State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China）
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）xFel〉z~Oj9 （x=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 （He） reached the maximum value of 65.15 AmZ/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.
ISSN:1002-0721
2509-4963
DOI:10.1016/s1002-0721(13)60017-4