Study of Nanocrystalline ZnAl₂O₄ and ZnFe₂O₄ with SiO₂ on Structural and Optical Properties Synthesized by Sol-Gel Method

Abstract:

Zinc aluminate (ZnAl₂O₄) and zinc ferrite (ZnFe₂O₄) nanocrystalline structures dispersed into SiO₂ matrix were prepared by sol-gel method. Phase formation of ZnAl₂O₄ and ZnFe₂O₄ was confirmed by X-ray diffraction (XRD) analysis. The crystallite sizes was determine using Scherer’s equation from the broadening of dominant peak at (311) plane. It was found the crystallite size of both compound decreased due to the decrement compositions of Zn²⁺ ion and Al³⁺ / Fe³⁺ ions. The crystallite sizes for ZnAl₂O₄ and ZnFe₂O₄ was calculated to be around ~ 14.16 – 11.27 nm and ~ 11.27 – 4.72 nm, respectively. FTIR analysis was done to determine the formation of spinel structures. FTIR results analysis confirmed that the formation of spinel structure where it has been observed that the bands around 800 cm^-1 was associated to the vibrations of aluminum-oxygen and metal-oxygen-aluminum bonds. This characteristic was identified to the formation of zinc aluminate spinel structure. The optical properties have been done to determine the energy bandgap of ZnAl₂O₄ and ZnFe₂O₄ samples. The Uv-Visible absorption spectra have been done within wavelength 300 – 800 nm and the graph was plotted into the Tauc plot. This new dielectric material was purposed to improve the value of dielectric permittivity with addition of SiO₂ where it can be applied as microwave dielectric material without changing the original spinel structures.

• Periodical: Advanced Materials Research (Volume 1119)
• Pages: 96-100
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1119.96
• Online since: July 2015
• Authors: Mohd Syafiq Zulfakar*, Huda Abdullah, Wan Nasarudin Wan Jalal, Zalita Zainuddin, Sahbudin Shaari
• Keywords: Dielectric Material, Silicon Dioxide, Sol-Gel Method, Zinc Aluminate, Zinc Ferrite

References

[1] D. Simeone, C. Dodane-Thiriet, D. Gosset, P. Daniel and M. Beauvy: J. Nucl. Mater. Vol. 300 (2002), p.151.

DOI: 10.1016/s0022-3115(01)00749-8

[2] K.P. Surendran, N. Santha, P. Mohanan and M.T. Sebastian: The European Physical Journal B - Condensed Matter and Complex Systems Vol. 41 (2004), p.301.

[3] H. Jiang, H.W. Liu, H. Yu, F. Gao, J. -M. Liu and C.W. Nan: Int. J. Mod Phys B Vol. 19 (2005), p.2682.

[4] X. -M. Liu, S. -Y. Fu, H. -M. Xiao and C. -J. Huang: Physica B: Condensed Matter Vol. 370 (2005), p.14.

[5] T. Yamauchi, Y. Tsukahara, T. Sakata, H. Mori, T. Chikata, S. Katoh and Y. Wada: J. Magn. Magn. Mater. Vol. 321 (2009), p.8.

[6] X. Tang, B.Y. Zhao, Q. Tian and K.A. Hu: J. Phys. Chem. Solids Vol. 67 (2006), p.2442.

[7] S. Zhang, D. Dong, Y. Sui, Z. Liu, H. Wang, Z. Qian and W. Su: J. Alloys Compd. Vol. 415 (2006), p.257.

[8] L. Zhang, in, Ohio State University, (2004).

[9] J. Plocek, A. Hutlová, D. Nižňanský, J. Buršı́k, J.L. Rehspringer and Z. Mička: J. Non-Cryst. Solids Vol. 315 (2003), p.70.

DOI: 10.1016/s0022-3093(02)01595-8

[10] R. Jenkins and R. Snyder, Introduction to X-ray powder diffractometry, Wiley-Interscience, (2012).

[11] R.T. Kumar, N.C.S. Selvam, C. Ragupathi, L.J. Kennedy and J.J. Vijaya: Powder Technol. Vol. 224 (2012), p.147.

[12] B. Shokri, M.A. Firouzjah and S. Hosseini: Vol. p.

[13] C. Ragupathi, L. John Kennedy and J. Judith Vijaya: Adv. Powder Technol. Vol. 25 (2014), p.267.

[14] T. Slatineanu, A.R. Iordan, M.N. Palamaru, O.F. Caltun, V. Gafton and L. Leontie: Mater. Res. Bull. Vol. 46 (2011), p.1455.

DOI: 10.1016/j.materresbull.2011.05.002

[15] E. Jamal, D. Kumar and M.R. Anantharaman: Bull. Mater. Sci. Vol. 34 (2011), p.251.

[16] P. Cheng, W. Li, H. Liu, M. Gu and W. Shangguah: Materials Science and Engineering: A Vol. 386 (2004), p.43.

[17] S.K. Joshi, A.K. Rai, R.C. Srivastava, J.P. Singh and D.K. Rai: IEEE Transactions on Magnetics Vol. 37 (2001), p.2356.