Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics

In this study, ceramics in Mn-doped ((Ka0.5Na0.5)0.935Li0.065)NbO3ceramics (Mn content = 0.25, 0.50, 1.00 and 1.50 mol%) were successfully prepared by the conventional mixed-oxide technique. The crystal structure was identified by XRD as a single-phase perovskite structure with tetragonal symmetry....

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Main Authors: S. Wongsaenmai, K. Kanchiang, S. Chandarak, Y. Laosiritaworn, S. Rujirawat, R. Yimnirun
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/51765
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-517652018-09-04T06:14:28Z Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics S. Wongsaenmai K. Kanchiang S. Chandarak Y. Laosiritaworn S. Rujirawat R. Yimnirun Materials Science Physics and Astronomy In this study, ceramics in Mn-doped ((Ka0.5Na0.5)0.935Li0.065)NbO3ceramics (Mn content = 0.25, 0.50, 1.00 and 1.50 mol%) were successfully prepared by the conventional mixed-oxide technique. The crystal structure was identified by XRD as a single-phase perovskite structure with tetragonal symmetry. The valence of Mn ions, characterized by the synchrotron XAS technique, was seen to change from Mn4+to Mn3+during the formation of the crystal. The valence state of Mn strongly affected the crystal structure and ferroelectric properties of the ceramics. The ferroelectric parameters show the decrease of remnant polarization and the increase of the coercive field with increasing MnO2content. The results confirm the Mn3+in KNNL perovskite lattices, leading to the formation of oxygen vacancies and hardening effects. © 2011 Elsevier B.V. All rights reserved. 2018-09-04T06:08:19Z 2018-09-04T06:08:19Z 2012-03-01 Journal 15671739 2-s2.0-81155152480 10.1016/j.cap.2011.07.040 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=81155152480&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/51765
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Materials Science
Physics and Astronomy
spellingShingle Materials Science
Physics and Astronomy
S. Wongsaenmai
K. Kanchiang
S. Chandarak
Y. Laosiritaworn
S. Rujirawat
R. Yimnirun
Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics
description In this study, ceramics in Mn-doped ((Ka0.5Na0.5)0.935Li0.065)NbO3ceramics (Mn content = 0.25, 0.50, 1.00 and 1.50 mol%) were successfully prepared by the conventional mixed-oxide technique. The crystal structure was identified by XRD as a single-phase perovskite structure with tetragonal symmetry. The valence of Mn ions, characterized by the synchrotron XAS technique, was seen to change from Mn4+to Mn3+during the formation of the crystal. The valence state of Mn strongly affected the crystal structure and ferroelectric properties of the ceramics. The ferroelectric parameters show the decrease of remnant polarization and the increase of the coercive field with increasing MnO2content. The results confirm the Mn3+in KNNL perovskite lattices, leading to the formation of oxygen vacancies and hardening effects. © 2011 Elsevier B.V. All rights reserved.
format Journal
author S. Wongsaenmai
K. Kanchiang
S. Chandarak
Y. Laosiritaworn
S. Rujirawat
R. Yimnirun
author_facet S. Wongsaenmai
K. Kanchiang
S. Chandarak
Y. Laosiritaworn
S. Rujirawat
R. Yimnirun
author_sort S. Wongsaenmai
title Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics
title_short Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics
title_full Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics
title_fullStr Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics
title_full_unstemmed Crystal structure and ferroelectric properties of Mn-doped ((Ka<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.935</inf>Li<inf>0.065</inf>)NbO<inf>3</inf>lead-free ceramics
title_sort crystal structure and ferroelectric properties of mn-doped ((ka<inf>0.5</inf>na<inf>0.5</inf>)<inf>0.935</inf>li<inf>0.065</inf>)nbo<inf>3</inf>lead-free ceramics
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=81155152480&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/51765
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