Vol 7, No 6 (2016) > Metalurgy and Material Engineering >

Exploring the Effect of Particle Concentration and Irradiation Time in the Synthesis of Barium Strontium Titanate (BST) Ba(1-X)SrxTiO3 (X:0-1) Nanoparticles by High Power Ultrasonic Irradiation

Erlina Yustanti, Mas Ayu Elita Hafizah, Azwar Manaf

 

Abstract: Barium strontium titanate (BST) or Ba1-xSrxTiO3
with x=0-1 possesses superior dielectric properties, which are widely used in
many applications like in communication technology, electronic
instrumentations, and various electrical devices. In this paper, the characterization of the particle and
crystallite size of Ba1-xSrxTiO3
(x: 0; 0.3; 0.7) is described. A two-step refinement commenced: first by mechanical milling, and then a
further refinement under ultrasonic irradiation in a high power sonicator was
applied to Ba1-xSrxTiO3
(x: 0; 0.3; 0.7) particles. The crystalline powders were obtained through mechanically alloyed standard research grade BaCO3, TiO2,
and SrCO3
precursors in a planetary ball mill.The powders were first found heavily
deformed after 60 hours of milling and then went through a sintering process at
1200°C for 4 hours to form multicrystallite particles. The presence of a single
phase in the three samples was solidly confirmed in their respective X-ray
diffraction (XRD) patterns. The changes of multicrystallite particles into
monocrystallite particles were obtained only after crystalline powders were
irradiated ultrasonically in a high power sonicator. The processing variable
during ultrasonic irradiation was limited to the duration time of irradiation
and particle concentration in the exposed media. It is shown that the average sizes of BST particles
at x=0; 0.3; 0.7 before ultrasonic irradiation
were 353, 348, and 385 nm,
respectively. These respective sizes decreased drastically to 52, 35, and 49 nm,
respectively, after 12 hours of ultrasonic irradiation. These particle sizes
are almost identical with that of their crystallite size. Hence, the synthesis
of monocrystallite particles has been achieved. As the particle concentration
of media takes effect, it is shown that an exposed media with a higher particle
concentration tends to form multicrystallite particles.
Keywords: Barium strontium titanate; Mechanical alloying; Nanoparticle; Particle size; Ultrasonic irradiation

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References


Ali, F., Reinert, L., Levêque, J.M., Duclaux, L., Muller, F., Saeed, S., Shah, S.S., 2014. Effect of Sonication Conditions: Solvent, Time, Temperature and Reactor Type on the Preparation of Micron Sized Vermiculite Particles. Ultrasonics—Sonochemistry, Volume 21(3), pp. 1002–1009

Czekaj, D., Czekaj, A.L., Orkisz, T., Orkisz, J., Smalarz, G., 2010. Impedance Spectroscopic Studies of Sol-gel Derived Barium Stronsium Titanate Thin Films. Journal of the European Ceramics Society, Volume 30, pp. 465–470

Gedanken, A., 2004. Using Sonochemistry for the Fabrications of Nanomaterials. Ultrasonic Sonochemistry, Volume 11, pp. 47–55

Heielscher, T., 2005. Ultrasonic Production of Nano-size Dispersion and Emulsions. European Nano System Workshop ENS’05, Paris France, 14-16 December 2005

Hessien, M.M., 2008. Synthesis and Characterization of Lithium Ferrite by Oxalate Precursorroute. J. Mag. Magn. Mater., Volume 320, pp. 2800–2807

Inorganic Crystal Structure Database (ICSD), 2016. Open-access Collection of Crystal Structures of Organic, Inorganic, Metal-organic Compounds and Minerals. Crystallography Open Database (COD), Available online at http://www.crystallography.net.2015.08.07

Ioachim, A., Toacsan, M.I., Banciu, M.G., Nedelcu, L., Vasiliu, F., Alexandru, H.V., Berbecaru, C., Stoica, G., 2007. Barium Strontium Titanate-based Perovskite Materials for Microwave Applications. Solid State Chemistry, Volume 35, pp. 513–520

Leoni, M., Ortolani, M., Scardi, P., 2016. Software for Whole Powder Pattern Modeling (WPPM), Version 1.0 (2016.38). Industrial Technologies: University of Trento

Leoni, M., Confente, T., 2012. PM2K Kernel v. 1.68 new IF (06/08/2012) © 2004-2012. Industrial Technologies: University of Trento

Liu, X., Wang, J., Gan, L.M., Ng, S.C., 1999. Improving the Magnetic Properties of Hydrothermally Synthesized Barium Ferrite. J. Magn. Mater., Volume 195, pp. 452–459

Lu, L., Lai, M.O., 1998. Mechanical Alloying. London: Kluwer Academic Publisher

Manaf, A., Hafizah, M.A.E., 2012. Particle Size of Mechanically Alloyed La0.5Sr0.5Fe0.5Mn0.25Ti0.25O3 Prepared with the Assistance of Ultrasonic Irradiation. J. Mater. Sci. Res., Volume 1(4), pp. 98–105

Manavalan, S.G., 2005. Structural and Electrical Properties of Barium Strontium Titanate Thin Films for Tunable Microwave Applications. Ph.D. thesis, University of South Florida

Matutes-Aquino, J., Dyaz-Castanon, S., Mirabal-Garcya, M., Palomares-Sanchez, S.A., 2000. Synthesis by Coprecipitation and Study of Barium Hexaferrite Powders. Scripta Mater., Volume 42, pp. 295–299

Monshi, A., 2012. Modified Scherrer Equation to Estimate More Accurately Nano-crystallite Size using XRD. World J. Nano Sci. Eng., Volume 2(3), pp. 154–160

Motaleb, I. Akula, A.B., Leedy, K., Cortez, R., 2013. Oxygen Effects on Barium Strontium Titanate Morphology and MOS Device Performance. Materials Letters, Volume 92, pp. 389–392

Nguyen, V.S., Rouxel, D., Hadji, R., Vincent, B., For, Yves, 2011. Effect of Ultrasonication and Dispersion Stability on the Cluster Size of Alumina Nanoscale Particles in Aqueous Solutions. Ultrasonic Sonochemistry, Volume 18, pp. 382–388

Patil, D.R., Lokare, S.A., Devan, R.S., Chougule, S.S., Kanamadi, C.M., Kolekar, Y.D., Chougule, B.K., 2007. Studies on Electrical and Dielectric Properties of Ba1-xSrxTiO3. Materials Chemistry and Physics, Volume 104(2–3), pp. 254–257

Shafi, K.V.P.M., Gedanken, A., 1999. Sonochemical Approach to the Preparation of Barium Hexaferrite Nanoparticles. Nanostruct. Mater., Volume 12, pp. 29–34

Speakman, S.A., 2012. High Score Plus (9430 032 129x1), Version 3.0e, PANalytical, MIT Center for Materials Science and Engineering. Available online at http://www.panalytical.com/Xray-diffraction-software/HighScore-Plus.htm

Suryanarayana, C., 2003. Mechanical Alloying and Milling. New York: Marcel Dekker

Thongtem, T., Tipcompor, N., Phuruangrat, A., Thongtem, S., 2010. Characterization of SrCO3 and BaCO3 Nanoparticles Synthesized by Sonochemical Method. Materials Letters, Volume 64, pp. 510–512

Yu, Y., Wang, X., Yao, X., 2013. Dielectric Properties of Ba1-xSrxTiO3 Ceramics Prepared by microwave sintering. Ceramics International, Volume 39(1), pp. S335–S339