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effect of calcination kinetics and microwave sintering parameters on dielectric and peizo-electric properties of(k0.5na0.5) nbo3 ceramics
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نویسنده
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nandini r. n. ,krishna m. ,suresh a.v. ,rao k. narasimha
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منبع
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iranian journal of materials science and engineering - 2018 - دوره : 15 - شماره : 2 - صفحه:14 -31
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چکیده
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An efficient solid-state approach was established to synthesize (k0.5na0.5) nbo3 ceramics using calcination kinetics and microwave assisted sintering. milling of carbonate and oxide raw materials were carried out for 15 h to obtain homogeneous nano particles. the crystallite size of 5.30 nm was obtained for the knn system after calcination through optimized parameters and observed to be stoichiometric in nature. the obtained nano particles showed phase transition from orthorhombic to tetragonal crystal structure without any secondary phases. the high relative density and tetragonality ratio of knn ceramics obtained through optimized sintering parameters yielded with significant piezoelectric and ferroelectric properties.
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کلیدواژه
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knn ,solid state method ,calcination kinetics ,microwave sintering ,piezo-electric properties
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آدرس
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rashtreeya vidyalaya college of engineering, department of mechanical engineering, india, rashtreeya vidyalaya college of engineering, department of mechanical engineering, india, bms institute of technology, department of mechanical engineering, india, indian institute of science, department of instrumentation and applied physics, india
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پست الکترونیکی
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nraokolli@yahoo.com
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Authors
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