Spin-canting and magnetic anisotropy in ultrasmall CoFe2O4 nanoparticles

被引：124
|
作者：
Peddis, D. [1 ,2 ]
Mansilla, M. V. [1 ]
Morup, S. [3 ]
Cannas, C. [2 ]
Musinu, A. [2 ]
Piccaluga, G. [2 ]
D'Orazio, F. [4 ]
Lucari, F. [5 ]
Fiorani, D. [1 ]
机构：
[1] CNR, Ist Struttura Mat, Monterotondo Stn, I-00016 Rome, Italy
[2] Citt Univ Monserrato, Dipartimento Sci Chim, I-09042 Monserrato, Ca, Italy
[3] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark
[4] Univ Aquila, Dip Fis, CNISM, I-67100 Laquila, Italy
[5] Univ Aquila, Dip Fis, CNR, INFM, I-67100 Laquila, Italy
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2008年 / 112卷 / 29期
关键词：
D O I：
10.1021/jp8016634
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：8507 / 8513
页数：7
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