Cation distribution in nanocrystalline ZnFe2O4 investigated using x-ray absorption fine structure spectroscopy

被引：65

作者：

Akhtar, M. J. ^{[1
]}

Nadeem, M. ^{[1
]}

Javaid, S. ^{[1
]}

Atif, M. ^{[2
]}

机构：

[1] PINSTECH, Div Phys, Islamabad, Pakistan

[2] Quaid I Azam Univ, Dept Phys, Islamabad, Pakistan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2009年 / 21卷 / 40期

关键词：

K-EDGE; NANOPARTICLES; TEMPERATURE; VANADIUM; NIFE2O4; EXAFS; FE;

D O I：

10.1088/0953-8984/21/40/405303

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 [凝聚态物理];

摘要：

X-ray absorption fine structure (XAFS) spectroscopy has been employed to investigate the cation distribution in nanocrystalline zinc ferrites (ZnFe2O4), synthesized in acidic and basic media at different temperatures. By using (Zn1-xFex)[NixFe2-x]O-4 as model compounds we have determined cation distribution in nanosize ZnFe2O4. The cation distribution for samples synthesized at low temperature (400 degrees C) is (Zn0.5Fe0.5)[Zn0.5Fe1.5]O-4 for urea- and (Zn0.75Fe0.25)[Zn0.25Fe1.75]O-4 for citric-acid-based samples. These results show that samples synthesized at and above 600 degrees C have a local structural environment identical to that of bulk ZnFe2O4.

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页数：9

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