Experimental and Computational Band Gap Of Cobalt Ferrite
Paper ID : 1429-ICNS
Ali Faraji Mohammad1, mahboubeh houshiar *2, Ali sadeqi3
1shahid behesti university , faculty of physic
2shahid beheshti
3Departement physic , faculty of physic , shahid beheshti university
Spinel Ferrites have attracted a lot of attention due to their high magnetic properties and have found vast practical applications. In this work the energy band gap of cobalt ferrite has been determined experimentally as well as computationally, comparing the results the optical properties of this nano structure is analysed. In the experimental part of this work the synthesis is done by coprecepitive method and the structure of the sample was determined using XRD instrument and the investigation of indirect optical band gap was done by UV-viz. experiment. The computational part ab-initio calculation was used for normal and inverse spinel structure with two approximations of GGA+U and LSDA+U and the results was found to be in good agreement with others where they have used different methods. According to this study Spinel structured Cobalt Ferrite is a semiconductor having a direct band gap of 2.78 ev and an indirect band gap of 1.13 ev.
Cobalt Ferrite, Spinel structure, Band Structure, Density of States Diagram.
Status : Abstract Accepted (Poster Presentation)