Citrate solution combustion derived Ba2Ti9O20 ceramics |
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| Affiliation: | 1. Department of Physics, V.T.M.N.S.S College, Dhanuvachapuram, Kerala 695503, India;2. Department of Physics, N.S.S College, Pandalam, Kerala 689501, India;3. Department of Physics, MES College, Nedumkandam, Kerala 685553, India;4. Electronic Materials Research Laboratory, Mar Ivanios College, Thiruvananthapuram, Kerala 695015, India;1. Department of Physics, Osmania University, Hyderabad 500007, Telangana, India;2. Department of Physics, Mekelle University, Tigray, Mekelle, Ethiopia;3. Department of Physics, Catholicate College, Pathanamthitta, Kerala 689645, India;4. Ultrafast and Nonlinear Optics Lab, Light and Matter Physics Group, Raman Research Institute, Bangalore 560080, India;5. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam 686560, Kerala, India;6. International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686560, Kerala, India;1. Instituto de Cerámica y Vidrio, ICV-CSIC, Kelsen 5, Madrid 28049, Spain;2. C-MAST, Department of Electromechanical Engineering, University of Beira Interior, 6200-001 Covilhã, Portugal;3. CETMIC (Centro de Tecnología de Recursos Minerales y Cerámica, CIC-CONICET La Plata), Camino Centenario y 506, C.C.49 (B1897ZCA) M.B. Gonnet, Buenos Aires, Argentina;1. Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, CT, USA;2. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA;3. G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA;4. Department of Physics, University of Connecticut, Storrs, CT, USA;5. Additive Manufacturing Innovation Center, University of Connecticut, Storrs, CT, USA;1. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, Shanxi Key Laboratory of Physico-Inorganic Chemistry, Department of Chemistry, Northwest University, Xi’an 710127, PR China;2. School of Information Science and Technology, Northwest University, Xi’an 710127, PR China |
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| Abstract: | A citrate solution combustion process was adopted to synthesize Ba2Ti9O20 phase. The precursor powders with small particle size of ∼100 nm and homogeneous distribution of multiphasic particles could be obtained by combustion of a citrate complex solution. The molar ratio of nitrate to citrate in the initial complex solutions had an obvious effect on the phase compositions and organic residuals of the precursor powders. However, those precursor powders all could be easily sintered into single phase Ba2Ti9O20 ceramics at 1250 °C for 4 h. The densities and dielectric constants of the ceramics depended on the molar ratio of nitrate to citrate in the initial complex solutions used for forming the precursor powders. The relations between the preparation conditions and properties were discussed. |
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