Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics
In this work, Li-modified KNN ceramic compositions ((K0.5Na0.5)1-xLix)NbO3with x = 0.03, 0.04, 0.05, 0.06, 0.65 and 0.07 were prepared by a conventional solid-state mixed-oxide method. The structural phase formation and microstructure were characterized by X-ray diffraction technique (XRD) and scann...
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th-cmuir.6653943832-514692018-09-04T06:08:42Z Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics Supattra Wongsaenmai Supon Ananta Rattikorn Yimnirun Chemical Engineering Materials Science In this work, Li-modified KNN ceramic compositions ((K0.5Na0.5)1-xLix)NbO3with x = 0.03, 0.04, 0.05, 0.06, 0.65 and 0.07 were prepared by a conventional solid-state mixed-oxide method. The structural phase formation and microstructure were characterized by X-ray diffraction technique (XRD) and scanning electron microscopy (SEM). It has been found that a morphotropic phase boundary (MPB) between orthorhombic phase and tetragonal phases should exist between compositions with Li contents of 6-6.5%. The Curie temperature (Tc) of the ceramics shifted to higher temperature with increasing Li content. The room temperature dielectric constant was also seen to be higher than the pure KNN ceramics. In addition, the ferroelectric properties were found to enhance at near MPB compositions. This study clearly showed that the addition of Li could improve the dielectric and ferroelectric properties in (K0.5Na0.5)NbO3ceramics. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. 2018-09-04T06:02:21Z 2018-09-04T06:02:21Z 2012-01-01 Journal 02728842 2-s2.0-82155167684 10.1016/j.ceramint.2011.06.049 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=82155167684&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/51469 |
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Chemical Engineering Materials Science Supattra Wongsaenmai Supon Ananta Rattikorn Yimnirun Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics |
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In this work, Li-modified KNN ceramic compositions ((K0.5Na0.5)1-xLix)NbO3with x = 0.03, 0.04, 0.05, 0.06, 0.65 and 0.07 were prepared by a conventional solid-state mixed-oxide method. The structural phase formation and microstructure were characterized by X-ray diffraction technique (XRD) and scanning electron microscopy (SEM). It has been found that a morphotropic phase boundary (MPB) between orthorhombic phase and tetragonal phases should exist between compositions with Li contents of 6-6.5%. The Curie temperature (Tc) of the ceramics shifted to higher temperature with increasing Li content. The room temperature dielectric constant was also seen to be higher than the pure KNN ceramics. In addition, the ferroelectric properties were found to enhance at near MPB compositions. This study clearly showed that the addition of Li could improve the dielectric and ferroelectric properties in (K0.5Na0.5)NbO3ceramics. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
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Supattra Wongsaenmai Supon Ananta Rattikorn Yimnirun |
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Supattra Wongsaenmai Supon Ananta Rattikorn Yimnirun |
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Supattra Wongsaenmai |
title |
Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics |
title_short |
Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics |
title_full |
Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics |
title_fullStr |
Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics |
title_full_unstemmed |
Effect of Li addition on phase formation behavior and electrical properties of (K<inf>0.5</inf>Na<inf>0.5</inf>)NbO<inf>3</inf>lead free ceramics |
title_sort |
effect of li addition on phase formation behavior and electrical properties of (k<inf>0.5</inf>na<inf>0.5</inf>)nbo<inf>3</inf>lead free ceramics |
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2018 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=82155167684&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/51469 |
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