Formation and superparamagnetic behaviors of LaFeO3 nanoparticles

被引：4
|
作者：
Fujii, Tatsuo [1 ]
Matsusue, Ikkoh [1 ]
Nakanishi, Makoto [1 ]
Takada, Jun [1 ]
机构：
[1] Okayama Univ, Dept Appl Chem, Fac Engn, Okayama 7008530, Japan
来源：
HYPERFINE INTERACTIONS | 2012年 / 205卷 / 1-3期
关键词：
LaFeO3; nanoparticles; Hot soap method; Superparamagnetism; Mossbauer spectroscopy;
D O I：
10.1007/s10751-011-0423-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Formation of LaFeO3 nanoparticles obtained from thermal decomposition of organometallic precursors was investigated as a function of the heat-treatment temperature. The precursors heat-treated below 300 degrees C were amorphous, but above 350 degrees C a single-phase of nanocrystalline LaFeO3 was formed. The LaFeO3 nanoparticles showed the superparamagnetic behavior in both magnetization and Mossbauer measurements. With increasing heat-treatment temperature, the crystallite size of LaFeO3 nanoparticles was gradually increased. The quadrupole splitting and isomer shift of paramagnetic doublet pattern were affected by the growth of LaFeO3 particles.
引用
收藏
页码：97 / 100
页数：4
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