利用原位多反射布拉格相干 X 射线衍射成像研究钛酸锶微晶的低温铁电状态

David Yang, Sung Soo Ha, Sungwook Choi, Jialun Liu, Daniel Treuherz, Nan Zhang, Zheyi An, Hieu Minh Ngo, Muhammad Mahmood Nawaz, Ana F. Suzana, Longlong Wu, Gareth Nisbet, Daniel G. Porter, Hyunjung Kim, Ian K. Robinson
{"title":"利用原位多反射布拉格相干 X 射线衍射成像研究钛酸锶微晶的低温铁电状态","authors":"David Yang, Sung Soo Ha, Sungwook Choi, Jialun Liu, Daniel Treuherz, Nan Zhang, Zheyi An, Hieu Minh Ngo, Muhammad Mahmood Nawaz, Ana F. Suzana, Longlong Wu, Gareth Nisbet, Daniel G. Porter, Hyunjung Kim, Ian K. Robinson","doi":"arxiv-2409.07595","DOIUrl":null,"url":null,"abstract":"Strontium titanate is a classic quantum paraelectric oxide material that has\nbeen widely studied in bulk and thin films. It exhibits a well-known\ncubic-to-tetragonal antiferrodistortive phase transition at 105 K,\ncharacterized by the rotation of oxygen octahedra. A possible second phase\ntransition at lower temperature is suppressed by quantum fluctuations,\npreventing the onset of ferroelectric order. However, recent studies have shown\nthat ferroelectric order can be established at low temperatures by inducing\nstrain and other means. Here, we used in situ multi-reflection Bragg coherent\nX-ray diffraction imaging to measure the strain and rotation tensors for two\nstrontium titanate microcrystals at low temperature. We observe strains induced\nby dislocations and inclusion-like impurities in the microcrystals. Based on\nradial magnitude plots, these strains increase in magnitude and spread as the\ntemperature decreases. Pearson's correlation heatmaps show a structural\ntransition at 50 K, which we associate with the formation of a low-temperature\nferroelectric phase in the presence of strain. We do not observe any change in\nlocal strains associated with the tetragonal phase transition at 105 K.","PeriodicalId":501234,"journal":{"name":"arXiv - PHYS - Materials Science","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Low temperature ferroelectric state in strontium titanate microcrystals using in situ multi-reflection Bragg coherent X-ray diffraction imaging\",\"authors\":\"David Yang, Sung Soo Ha, Sungwook Choi, Jialun Liu, Daniel Treuherz, Nan Zhang, Zheyi An, Hieu Minh Ngo, Muhammad Mahmood Nawaz, Ana F. Suzana, Longlong Wu, Gareth Nisbet, Daniel G. Porter, Hyunjung Kim, Ian K. Robinson\",\"doi\":\"arxiv-2409.07595\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Strontium titanate is a classic quantum paraelectric oxide material that has\\nbeen widely studied in bulk and thin films. It exhibits a well-known\\ncubic-to-tetragonal antiferrodistortive phase transition at 105 K,\\ncharacterized by the rotation of oxygen octahedra. A possible second phase\\ntransition at lower temperature is suppressed by quantum fluctuations,\\npreventing the onset of ferroelectric order. However, recent studies have shown\\nthat ferroelectric order can be established at low temperatures by inducing\\nstrain and other means. Here, we used in situ multi-reflection Bragg coherent\\nX-ray diffraction imaging to measure the strain and rotation tensors for two\\nstrontium titanate microcrystals at low temperature. We observe strains induced\\nby dislocations and inclusion-like impurities in the microcrystals. Based on\\nradial magnitude plots, these strains increase in magnitude and spread as the\\ntemperature decreases. Pearson's correlation heatmaps show a structural\\ntransition at 50 K, which we associate with the formation of a low-temperature\\nferroelectric phase in the presence of strain. We do not observe any change in\\nlocal strains associated with the tetragonal phase transition at 105 K.\",\"PeriodicalId\":501234,\"journal\":{\"name\":\"arXiv - PHYS - Materials Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Materials Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.07595\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Materials Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.07595","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

钛酸锶是一种典型的量子顺电氧化物材料,已被广泛用于块体和薄膜研究。它在 105 K 时表现出众所周知的立方到四方的反铁电体相变,其特征是氧八面体的旋转。在较低温度下可能发生的第二次相变受到量子波动的抑制,从而阻碍了铁电秩序的形成。然而,最近的研究表明,通过诱导应变等手段,铁电有序可以在低温下建立。在这里,我们利用原位多反射布拉格相干 X 射线衍射成像技术测量了钛酸锶微晶在低温下的应变和旋转张量。我们观察到微晶中的位错和包涵状杂质引起的应变。根据径向幅值图,这些应变的幅值随着温度的降低而增大和扩散。皮尔逊相关热图显示了 50 K 时的结构转变,我们将其与在应变存在的情况下形成的低温铁电相联系起来。我们没有观察到与 105 K 时四方相变相关的局部应变的任何变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Low temperature ferroelectric state in strontium titanate microcrystals using in situ multi-reflection Bragg coherent X-ray diffraction imaging
Strontium titanate is a classic quantum paraelectric oxide material that has been widely studied in bulk and thin films. It exhibits a well-known cubic-to-tetragonal antiferrodistortive phase transition at 105 K, characterized by the rotation of oxygen octahedra. A possible second phase transition at lower temperature is suppressed by quantum fluctuations, preventing the onset of ferroelectric order. However, recent studies have shown that ferroelectric order can be established at low temperatures by inducing strain and other means. Here, we used in situ multi-reflection Bragg coherent X-ray diffraction imaging to measure the strain and rotation tensors for two strontium titanate microcrystals at low temperature. We observe strains induced by dislocations and inclusion-like impurities in the microcrystals. Based on radial magnitude plots, these strains increase in magnitude and spread as the temperature decreases. Pearson's correlation heatmaps show a structural transition at 50 K, which we associate with the formation of a low-temperature ferroelectric phase in the presence of strain. We do not observe any change in local strains associated with the tetragonal phase transition at 105 K.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信