摘要
对用其沉淀法制备的CuFe_2O_4磁性纳米微粒及其合成的自形成磁性液体在室温下进行磁性测量.其结果表明CuFe_2O_4微粒的饱和磁化强度较小,粉末与自形成磁性液体均呈超顺磁性-无剩磁、无矫顽力.用Langevin理论对测得的磁性进行了对比分析,从微粒间的相互作用解释了粉末和磁性液体的实测磁化曲线与Langevin理论的不同偏离现象.
The magnetic behavior of CuFe2O4 nanoparticles prepared by co-precipitation and their selfformed ferrofluids is measured at room temperature. The results show that the saturation magnetization of CuFe2O4 powder is less than that of other ferrite nanoparticles and that both the powder and the ferrofluids exhibit superparamagnetism. The experimental results are analyzed with Langevin theory, and the differences in behavior of deviation from Langevin theory for the powder and the ferrofluids are explained with interaction between particles.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第7期38-43,共6页
Journal of Southwest University(Natural Science Edition)
基金
重庆市自然科学基金(CSTC2005BB4106)
西南师范大学发展基金(SWNUF2004005).
