Journal of Nanoscience and Nanoengineering
Articles Information
Journal of Nanoscience and Nanoengineering, Vol.1, No.2, Aug. 2015, Pub. Date: Aug. 3, 2015
Effect of Heat Treatment on the Optical Properties of Spinel ZnFe2O4 Thin Films
Pages: 44-48 Views: 1436 Downloads: 716
Authors
[01] M. Vishwas, Department of Physics, Government Science College (Autonomous), Bangalore, India.
[02] K. Narasimha Rao, Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, India.
Abstract
Zinc ferrite (ZnFe2O4) thin films were synthesized on glass and quartz substrates by the sol-gel method. The influence of annealing temperature and microwave irradiation on the optical properties of ZnFe2O4 thin films was investigated. The optical transmittance decreased with increase of annealing temperature. The optical band gap energy of the ZnFe2O4 thin films was estimated at different annealing temperatures by the Tauc’s method. The optical band gap energy increased with annealing temperature. The film thickness decreased with increase of annealing temperature and refractive index increased with annealing temperature.
Keywords
ZnFe2O4, Thin Films, Optical Properties, Band Gap Energy, Microwave Irradiation
References
[01] Ehrhardt, H., Campbell, S. J. and Hofmann, M. (2003), “Magnetism of the nanostructured spinel zinc ferrite,” Scripta Materialia, 48 (8), 1141–1146.
[02] Kundu, A., Upadhyay, C. and Verma, H. C. (2003), “Magnetic properties of a partially inverted zinc ferrite synthesized by a new coprecipitation technique using urea,” Physics Letters A, 311 (4-5), 410–415.
[03] Deng, H., Li, X., Peng, Q., Wang, X., Chen, J. and Li, Y. (2005), “Monodisperse magnetic single-crystal ferrite microspheres,” Angewandte Chemie. International Edition, 44 (18), 2782–2785.
[04] Yao, C., Zeng, Q., Goya, G. F., Torres, T., Liu, J., Wu, H., Ge, M., Zeng, Y., Wang Y. and Jiang, J. Z. (2007), “ZnFe2O4 Nanocrystals: Synthesis and Magnetic Properties” J. Phys. Chem. C, 111, 12274-12278.
[05] Zhang, B., Zhang J. and Chen, F. (2008), “Preparation and characterization of magnetic TiO2/ZnFe2O4 photocatalysts by a sol–gel method” Res. Chem. Intermed., 34 (4), 375–380.
[06] Niu, X., Du, W. and Du, W. (2004), “Preparation and gas sensing properties of ZnM2O4 (M = Fe, Co, Cr),” Sensors and Actuators B, 99 (2-3), 405–409.
[07] Zhang, G., Li, C., Cheng, F. and Chen, J. (2007), “ZnFe2O4 tubes: synthesis and application to gas sensors with high sensitivity and low-energy consumption,” Sensors and Actuators B, 120 (2), 403–410.
[08] Vishwas, M., Rao, K. N. and Raichur, A. M. (2015), “Fabrication and characterization of ZnFe2O4 thin film based metal-insulator-semiconductor capacitors” Int. Lett. Chem., Phy. and Astr., 50, 151-158.
[09] Vishwas, M., Rao, K. N., Phani, A. R. and Gowda, K. V. A. (2012), “Sol–gel synthesis and optical characterization of nano-crystalline ZnTiO3 thin films” J. Opt., 41(1), 60–64.
[10] M. Vishwas, Sharma, S.K., Rao, K.N., Mohan, S., Gowda, K.V.A. and Chakradhar, R.P.S. (2010), “Influence of surfactant and annealing temperature on optical properties of sol–gel derived nano-crystalline TiO2 thin films”, Spectrochimica Acta Part A, 75, 1073–1077.
[11] Vishwas, M., Rao, K.N., Kareem, K.S. and Chakradhar, R.P.S. (2014), “Influence of annealing and SiO2 layer on structural, optical and electrical properties of hydrophobic ITO thin films prepared by activated reactive evaporation”, J. Nano Science and NanoTechnology, 2 (4), 475-479.
[12] Vishwas, M., Rao, K.N. and Chakradhar, R.P.S. (2012), “Influence of annealing temperature on Raman and photoluminescence spectra of electron beam evaporated TiO2 thin films”, Spectrochimica Acta Part A, 99, 33–36.
[13] Li, G.H., Yang, L., Jin, Y.X. and Zhang, L.D. (2000), “Structural and optical properties of TiO2 thin film and TiO2 + 2 wt.% ZnFe2O4 composite film prepared by r.f. sputtering” Thin Solid Films, 368, 163-167.
[14] Khorrami, S., Gharib, F., Mahmoudzadeh, G., Sepehr, S.S., Madani, S.S., Naderfar, N. and Manie, S. (2011), “Synthesis and characterization of nanocrystalline spinel Zinc ferrite prepared by sol-gel auto-combustion technique”, Int. J. Nano. Dim., 1(3), 221-224.
[15] Liang, Yuan-Chang and Hsia, Hao-Yuan (2013), “Growth and crystallographic feature-dependent characterization of spinel zinc ferrite thin films by RF sputtering”, Nanoscale Research Letters, 8, 537-544.
[16] Vishwas, M., Rao, K. N., Phani, A. R., Gowda, K. V. A. and Chakradhar, R.P.S. (2012), “Optical, electrical and structural characterization of ZnO:Al thin films prepared by a low cost sol–gel method”, Solid State Comm., 152, 324–327.
[17] Swanepoel, R. (1983), “Determination of the thickness and optical constants of amorphous silicon” J. Phys. E: Sci. Instrum.,16, 1214-1222.
600 ATLANTIC AVE, BOSTON,
MA 02210, USA
+001-6179630233
AIS is an academia-oriented and non-commercial institute aiming at providing users with a way to quickly and easily get the academic and scientific information.
Copyright © 2014 - 2017 American Institute of Science except certain content provided by third parties.