Characterization of magnetite nanoparticles supported in sulfonated styrene-divinylbenzene mesoporous copolymer

被引：0

作者：

A. F. R. Rodriguez

J. A. H. Coaquira

J. G. Santos

L. B. Silveira

E. M. Marmolejo

W. Trennepohl

D. Rabelo

A. C. Oliveira

V. K. Garg

P. C. Morais

机构：

[1] Fundação Universidade Federal de Rondônia,Departamento de Física

[2] Universidade de Brasília,Núcleo de Física Aplicada, Instituto de Física

[3] Universidade Federal de Goiás,Instituto de Química

[4] Universidade Federal do Acre-UFAC,Departamento de Física

来源：

Hyperfine Interactions | 2009年 / 191卷

关键词：

Mössbauer spectroscopy; Magnetite nanoparticles; Sulfonated styrene-divinylbenzene template; Magnetic nanocomposites; Magnetization;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The chemical co-precipitation process was used to synthesize (in situ) spherical iron-oxide nanoparticle in sulfonated styrene-divinylbenzene polymeric template. X-ray diffraction technique supports the magnetite phase formation with a mean particle diameter of about 19 nm. The analysis of Mössbauer spectra is consistent with two magnetic splitting patterns assigned to A- and B-iron sites of magnetite, with no visible magnetic relaxation effect even at 297 K. Considering the different experimental time window between Mössbauer spectroscopy and DC magnetization, the results obtained from both techniques are in very good agreement. Magnetic data suggest hosting magnetite nanoparticles interacting antiferromagnetically.

引用

页码：87 / 93

页数：6

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