Combustion synthesis and characterization of Sn4+ substituted nanocrystalline NiFe2O4

被引：163

作者：

Balaji, S

Selvan, RK

Berchmans, LJ

Angappan, S

Subramanian, K

Augustin, CO ^{[1
]}

机构：

[1] Cent Electrochem Res Inst, Karaikkudi 630006, Tamil Nadu, India

[2] Thiagarajar Coll Engn, Dept Phys, Madurai 625015, Tamil Nadu, India

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2005年 / 119卷 / 02期

关键词：

nanocrystallines; Sn-Ni ferrites; X-ray spectroscopy; electrical measurements;

D O I：

10.1016/j.mseb.2005.01.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of Sn4+ substituted NiFe2O4 with general formula Ni1-xSnxFe2O4 (x=0.0, 0.2, 0.4, 0.6, and 0.8) has been prepared by novel combustion synthetic method. The prepared compounds have been sintered at 1000 degrees C and evaluated for their structural and electrical properties. XRD studies reveal the synthesized compounds are nanocrystalline size with cubic structure. The Fourier transform infrared (FT-IR) spectra show the characteristic features of the synthesized ferrite compounds. The UV-vis spectra reveal the optical band gap of the synthesized compounds. The dc electrical conductivity of the compounds found to increase with increasing measuring temperature. A maximum dc electrical conductivity of 6.0 S cm(-1) was obtained at a measuring temperature of 1000 degrees C in the composition of x=0.8 for which the activation energy for conduction is found to be minimum. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：119 / 124

页数：6

共 30 条

[1] Changes in oxidation state and magnetic order of iron atoms during the electrochemical reaction of lithium with NiFe2O4 [J].