Morphology control of γ-Fe2O3 nanocrystals via PEG polymer and accounts of its Mossbauer study

被引：20

作者：

Xu, F

Zhang, X

Xie, Y ^{[1
]}

Tian, XB

Li, YZ

机构：

[1] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2003年 / 260卷 / 01期

基金：

美国国家科学基金会;

关键词：

ECE model; PEG polymer; Mossbauer study; morphology control;

D O I：

10.1016/S0021-9797(02)00138-8

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：

Granular, needle-, rod-, or whisker-shaped gamma-Fe2O3 nanocrystals have been prepared via controlling the chemical microenvironment of the reaction system under gamma-irradiation. A novel extension-curl-effect model was proposed to explain the effect of the chemical microenvironment on the morphology of gamma-Fe2O3 nanocrystals. The as-prepared gamma-Fe2O3 nanocrystals were characterized by powder X-ray diffraction and transmission electron microscopy. Their magnetic properties were also studied by zero-field Mossbauer spectroscopy, which indicated that different shaped gamma-Fe2O3 nanocrystals could exhibit interesting magnetic behavior. (C) 2003 Elsevier Science (USA). All rights reserved.

引用

页码：160 / 165

页数：6

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