Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)

(1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 has been the most studied Pb-free piezoelectric material in the last decade; however, puzzles still remain about its phase transitions, especially around the important morphotropic phase boundary (MPB). By introducing the strain glass transition concept from the fer...

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Main Author: Yonggang Yao, Zhimin Sun, Yuanchao Ji, Yaodong Yang, Xiaoli Tan and Xiaobing Ren
Format: Article
Language:English
Published: Taylor & Francis Group 2013-01-01
Series:Science and Technology of Advanced Materials
Online Access:http://dx.doi.org/10.1088/1468-6996/14/3/035008
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author Yonggang Yao, Zhimin Sun, Yuanchao Ji, Yaodong Yang, Xiaoli Tan and Xiaobing Ren
author_facet Yonggang Yao, Zhimin Sun, Yuanchao Ji, Yaodong Yang, Xiaoli Tan and Xiaobing Ren
author_sort Yonggang Yao, Zhimin Sun, Yuanchao Ji, Yaodong Yang, Xiaoli Tan and Xiaobing Ren
collection DOAJ
description (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 has been the most studied Pb-free piezoelectric material in the last decade; however, puzzles still remain about its phase transitions, especially around the important morphotropic phase boundary (MPB). By introducing the strain glass transition concept from the ferroelastic field, it was found that the phase transition from tetragonal (T, P4bm) to rhombohedral (R, R3c) was affected by a strain glass transition at higher temperature for x ≥ 4%. In these compositions, the T–R transition was delayed or even totally suppressed and displayed huge thermal hysteresis upon cooling and heating. Also, isothermal phase transitions were predicted and realized successfully in the crossover region, where the interaction between the T–R transition and the strain glass transition was strong. Our results revealed the strain glass nature in compositions around the MPB in this important material, and also provide new clues for understanding the transition complexity in other (Bi1/2Na1/2)TiO3-based Pb-free piezoelectric materials.
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spelling doaj.art-44bca122cabd40b78843452492f026d42022-12-21T23:18:25ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142013-01-0114303500810.1088/1468-6996/14/3/035008Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)Yonggang Yao, Zhimin Sun, Yuanchao Ji, Yaodong Yang, Xiaoli Tan and Xiaobing Ren(1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 has been the most studied Pb-free piezoelectric material in the last decade; however, puzzles still remain about its phase transitions, especially around the important morphotropic phase boundary (MPB). By introducing the strain glass transition concept from the ferroelastic field, it was found that the phase transition from tetragonal (T, P4bm) to rhombohedral (R, R3c) was affected by a strain glass transition at higher temperature for x ≥ 4%. In these compositions, the T–R transition was delayed or even totally suppressed and displayed huge thermal hysteresis upon cooling and heating. Also, isothermal phase transitions were predicted and realized successfully in the crossover region, where the interaction between the T–R transition and the strain glass transition was strong. Our results revealed the strain glass nature in compositions around the MPB in this important material, and also provide new clues for understanding the transition complexity in other (Bi1/2Na1/2)TiO3-based Pb-free piezoelectric materials.http://dx.doi.org/10.1088/1468-6996/14/3/035008
spellingShingle Yonggang Yao, Zhimin Sun, Yuanchao Ji, Yaodong Yang, Xiaoli Tan and Xiaobing Ren
Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)
Science and Technology of Advanced Materials
title Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)
title_full Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)
title_fullStr Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)
title_full_unstemmed Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)
title_short Evolution of the tetragonal to rhombohedral transition in (1 − x)(Bi1/2Na1/2)TiO3 − xBaTiO3 (x ≤ 7%)
title_sort evolution of the tetragonal to rhombohedral transition in 1 x bi1 2na1 2 tio3 xbatio3 x ≤ 7
url http://dx.doi.org/10.1088/1468-6996/14/3/035008
work_keys_str_mv AT yonggangyaozhiminsunyuanchaojiyaodongyangxiaolitanandxiaobingren evolutionofthetetragonaltorhombohedraltransitionin1xbi12na12tio3xbatio3x7