Fe-doped SnO2 nanopowders obtained by sol-gel and mechanochemical alloying with and without thermal treatment

被引：3

作者：

Sanchez, L. C. ^{[1
]}

Beltran, J. J. ^{[1
]}

Osorio, J. ^{[1
]}

Calle, A. M. ^{[1
]}

Barrero, C. A. ^{[1
]}

机构：

[1] Univ Antioquia, Sede Invest Univ, Grp Estado Solido, Medellin, Colombia

来源：

HYPERFINE INTERACTIONS | 2010年 / 195卷 / 1-3期

关键词：

Fe and SnO2; Sol-gel method; Ball milling; Thermal treatment; Mossbauer spectrometry; MAGNETIC-PROPERTIES; NANOPARTICLES; MOSSBAUER;

D O I：

10.1007/s10751-009-0118-2

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：

The present work is aimed to compare the physical properties of Sn1-xFexO2-delta (x = 0, and 0.05) nanopowders obtained by sol-gel method, mechanochemical alloying, and mechanochemical alloying followed by thermal treatment. The X-ray diffraction of Sn1-xFexO2-delta samples prepared by sol-gel showed peaks due to the cassiterite phase of SnO2 and their Mossbauer spectra showed ferromagnetic and paramagnetic signals. The samples obtained by the milling process of SnO2 mixed with alpha-Fe showed Bragg peaks due to SnO2 (rutile) with a line broadening caused by the reduction of grain sizes and the presence of microstrains. Mossbauer spectra for these samples revealed the presence of Fe3+ as well as unreacted alpha-Fe. In the case of mechanochemical alloying with thermal treatment, the incorporation of Fe3+ in the SnO2 structure with the presence of impurities was observed.

引用

页码：185 / 189

页数：5

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