Spin-canting and magnetic anisotropy in ultrasmall CoFe2O4 nanoparticles
Spin-canting and magnetic anisotropy in ultrasmall CoFe2O4 nanoparticles
复制标题
DOI：
10.1021/jp8016634
复制
发表时间：
2008-07-24
影响因子：
3.3
通讯作者：
Fiorani, D.
中科院分区：
文献类型：
--
作者：
Peddis, D.;Mansilla, M. V.;Fiorani, D.
通过磁化强度、直流和交流磁化率以及穆斯堡尔谱测量，研究了分散在不同浓度（5 和 10 wt% CoFe2O4）和相同粒径（3 nm）样品中二氧化硅基体中的钴铁氧体纳米粒子的磁性。结果表明粒子之间的相互作用非常弱。讨论了与阳离子分布相关的磁特性（饱和磁化强度、各向异性常数和自旋倾斜）。
The magnetic properties of cobalt ferrite nanoparticles dispersed in a silica matrix in samples with different concentrations (5 and 10 wt % CoFe2O4) and same particle size (3 nm) were studied by magnetization, DC and AC susceptibility, and Mossbauer spectroscopy measurements. The results indicate that the particles are very weakly interacting. The magnetic properties (saturation magnetization, anisotropy constant, and spin-canting) are discussed in relation to the cation distribution.