{"title":"铁电陶瓷的大机电响应和场致形状记忆效应。","authors":"Menglu Li, Weili Li, Wenping Cao, Nuo Xu, Wenqi Li, Weidong Fei","doi":"10.1002/advs.202410580","DOIUrl":null,"url":null,"abstract":"<p>Electric-field-induced shape memory effect has potential applications in electromechanical actuator. Here, this study proposes the a phase structure design routine in (1-<i>x</i>)(75Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>-25SrTiO<sub>3</sub>)-<i>x</i>PbTiO<sub>3</sub> ceramics to obtain large electromechanical response and shape memory effect. It is found that the shape memory effect is closely related to the bending deformation induced by asymmetric polarization between positive and negative electrodes, which is resulted from the reductions of Bi<sup>3+</sup> and Pb<sup>2+</sup> because of electron injection from negative electrode. In addition, the content of ferroelectric phase with P4 mm structure and <i>c/a</i> ratio increase with PbTiO<sub>3</sub> content increasing, and the coercive field of the ceramics is also enhanced by the PbTiO<sub>3</sub> addition, Combing the crystal structure and chemical composition, the field-induced deformation achieves 2.77% and shape memory effect is 1.75% at 80kV cm<sup>−1</sup> and 0.1 Hz in the ceramic with the content of PbTiO<sub>3</sub> is 40%.</p>","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":"12 11","pages":""},"PeriodicalIF":14.1000,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11923892/pdf/","citationCount":"0","resultStr":"{\"title\":\"Large Electromechanical Response and Field-Induced Shape Memory Effect in Ferroelectric Ceramics\",\"authors\":\"Menglu Li, Weili Li, Wenping Cao, Nuo Xu, Wenqi Li, Weidong Fei\",\"doi\":\"10.1002/advs.202410580\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Electric-field-induced shape memory effect has potential applications in electromechanical actuator. Here, this study proposes the a phase structure design routine in (1-<i>x</i>)(75Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>-25SrTiO<sub>3</sub>)-<i>x</i>PbTiO<sub>3</sub> ceramics to obtain large electromechanical response and shape memory effect. It is found that the shape memory effect is closely related to the bending deformation induced by asymmetric polarization between positive and negative electrodes, which is resulted from the reductions of Bi<sup>3+</sup> and Pb<sup>2+</sup> because of electron injection from negative electrode. In addition, the content of ferroelectric phase with P4 mm structure and <i>c/a</i> ratio increase with PbTiO<sub>3</sub> content increasing, and the coercive field of the ceramics is also enhanced by the PbTiO<sub>3</sub> addition, Combing the crystal structure and chemical composition, the field-induced deformation achieves 2.77% and shape memory effect is 1.75% at 80kV cm<sup>−1</sup> and 0.1 Hz in the ceramic with the content of PbTiO<sub>3</sub> is 40%.</p>\",\"PeriodicalId\":117,\"journal\":{\"name\":\"Advanced Science\",\"volume\":\"12 11\",\"pages\":\"\"},\"PeriodicalIF\":14.1000,\"publicationDate\":\"2025-01-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11923892/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202410580\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Science","FirstCategoryId":"88","ListUrlMain":"https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202410580","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Large Electromechanical Response and Field-Induced Shape Memory Effect in Ferroelectric Ceramics
Electric-field-induced shape memory effect has potential applications in electromechanical actuator. Here, this study proposes the a phase structure design routine in (1-x)(75Na0.5Bi0.5TiO3-25SrTiO3)-xPbTiO3 ceramics to obtain large electromechanical response and shape memory effect. It is found that the shape memory effect is closely related to the bending deformation induced by asymmetric polarization between positive and negative electrodes, which is resulted from the reductions of Bi3+ and Pb2+ because of electron injection from negative electrode. In addition, the content of ferroelectric phase with P4 mm structure and c/a ratio increase with PbTiO3 content increasing, and the coercive field of the ceramics is also enhanced by the PbTiO3 addition, Combing the crystal structure and chemical composition, the field-induced deformation achieves 2.77% and shape memory effect is 1.75% at 80kV cm−1 and 0.1 Hz in the ceramic with the content of PbTiO3 is 40%.
期刊介绍：
Advanced Science is a prestigious open access journal that focuses on interdisciplinary research in materials science, physics, chemistry, medical and life sciences, and engineering. The journal aims to promote cutting-edge research by employing a rigorous and impartial review process. It is committed to presenting research articles with the highest quality production standards, ensuring maximum accessibility of top scientific findings. With its vibrant and innovative publication platform, Advanced Science seeks to revolutionize the dissemination and organization of scientific knowledge.
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