Modified Sol-Gel Processing of NiCr2O4 Nanoparticles; Structural Analysis and Optical Band Gap

Nickel Chromite nanoparticles were successfully synthesized a modified sol-gel method using nickel acetate and ammonium dichromate in melted stearic acid as a complexing agent. The diffractograms of the nanoparticles confirmed a pure formation of NiCr spinel without any minor phase. The coordination...

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Bibliographic Details
Published inHigh temperature materials and processes Vol. 36; no. 2; pp. 121 - 125
Main Authors Enhessari, Morteza, Salehabadi, Ali, Khanahmadzadeh, Salah, Arkat, Kamal, Nouri, Jalal
Format Journal Article
LanguageEnglish
Published De Gruyter 01.02.2017
Subjects
nanoparticles
NiCr
nicr2o4 spinel
optical band gap
sol-gel
spinel
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Summary:Nickel Chromite nanoparticles were successfully synthesized a modified sol-gel method using nickel acetate and ammonium dichromate in melted stearic acid as a complexing agent. The diffractograms of the nanoparticles confirmed a pure formation of NiCr spinel without any minor phase. The coordination structure of as prepared nanoparticles shows a series of absorption bands below 1,000 cm were evidenced the M-O (Cr-O, Ni-O) bond in the sample. Optical band gap, magnetic properties and color parameters ( *) indicates that the final nanoparticles are optically and magnetically active. The particle size of NiCr was calculated using Scherrer equation at about 24 nm. Optical band gap obtained at 1.7 eV indicating that NiCr nanoparticles are semiconductor material and can be used in electrical devices.
ISSN:0334-6455
2191-0324
DOI:10.1515/htmp-2015-0223