Synthesis and characterization of bismuth alkaline titanate powders |
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| Authors: | AM Torres-Huerta MA Domínguez-Crespo MA Hernández-Pérez DS García-Zaleta SB Brachetti-Sibaja |
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| Affiliation: | 1. CICATA-Altamira, Instituto Politécnico Nacional, Km. 14.5 Carretera Tampico Puerto Industrial Altamira, Altamira, Tamps. 89600, Mexico;2. ESIQIE, Metalurgia, Instituto Politécnico Nacional, México, D. F, Mexico;3. Instituto Tecnológico de Ciudad Madero, Av. 1o. de Mayo esq. Sor Juana Inés de la Cruz s/n Col. Los Mangos C.P.89440 Cd. Madero Tamaulipas Mexico;1. Department of Materials Science and Engineering and Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA;2. Condensed Matter Science and Technology Institute and Department of Physics, Harbin Institute of Technology, Harbin 150080, China;1. Ethiopian Space Science and Technology Institute, Addis Ababa, Ethiopia;2. Washera Geospace and Radar Science Laboratory, Bahir Dar University, Bahir Dar, Ethiopia;3. Department of Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI, USA;1. Institute of High Temperature Materials and Technology for Metallurgy, School of Metallurgy, Northeastern University, Shenyang 110819, China;2. The State Key Laboratory of Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China;1. Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan;2. Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan;1. Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská Dolina, SK-842 15 Bratislava, Slovakia;2. Department of Magnetometry, Institute of Measurement Science, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia;3. STU Centre for Nanodiagnostics, Slovak University of Technology, Vazovova 5, 812 43 Bratislava, Slovakia;4. Institute of Materials Science, Faculty of Materials Science and Technology, Slovak University of Technology, Paulínska 16, Trnava, Slovakia;5. NMR Laboratory, Faculty of Pharmacy, Comenius University in Bratislava, Slovakia |
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| Abstract: | In this work, samples of bismuth alkaline titanate, (K0.5Na0.5)(2?x/2)Bi(x/6)TiO3, (x = 0.05–0.75) have been prepared by conventional ceramic technique and molten salts. Metal oxides or carbonates powders were used as starting raw materials. The crystalline phase of the synthesized powders was identified by the X-ray diffraction (XRD) and particle morphology was characterized by scanning electron microscopy (SEM). Solid state reaction method was unsuccessful to obtain pellets. From XRD results, a rhombohedral structure was detected and the parameter lattice were estimated to be a = 5.5478 Å and α = 59.48°. These parameters were used to refine the structure by Rietveld analysis. SEM results showed several morphologies. Apparently, bismuth is promoting the grain growth whose sizes vary from 30 nm to 180 nm It is expected that these materials can be utilized in practical applications as substitutes for lead zirconatetitanate (PZT)-based ceramics. |
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