电流诱导的二氧化钛结构和电子变化

IF 10 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Today Physics Pub Date : 2024-09-12 DOI:10.1016/j.mtphys.2024.101546
Tyler C. Sterling , Feng Ye , Seohyeon Jo , Anish Parulekar , Yu Zhang , Gang Cao , Rishi Raj , Dmitry Reznik
{"title":"电流诱导的二氧化钛结构和电子变化","authors":"Tyler C. Sterling ,&nbsp;Feng Ye ,&nbsp;Seohyeon Jo ,&nbsp;Anish Parulekar ,&nbsp;Yu Zhang ,&nbsp;Gang Cao ,&nbsp;Rishi Raj ,&nbsp;Dmitry Reznik","doi":"10.1016/j.mtphys.2024.101546","DOIUrl":null,"url":null,"abstract":"<div><p>In-situ diffuse neutron scattering experiments revealed that when electric current is passed through single crystals of rutile TiO<sub>2</sub> under conditions conducive to flash sintering, it induces the formation of parallel planes of oxygen vacancies. Specifically, a current perpendicular to the <em>c</em>-axis generates planes normal to the (132) reciprocal lattice vector, whereas currents aligned with the <em>c</em>-axis form planes normal to the (132) and to the (225) vector. The concentration of defects increases with incresing current. The structural modifications are linked to the appearance of signatures of interacting Ti<sup>3+</sup> moments in magnetic susceptibility, signifying a structural collapse around the vacancy planes. Electrical conductivity measurements of the modified material reveal several electronic transitions between semiconducting states (via a metal-like intermediate state) with the smallest gap being 27 meV. Pristine TiO<sub>2</sub> can be restored by heating followed by slow cooling in air. Our work suggests a novel paradigm for achieving switching of electrical conductivity related to the flash phenomenon.</p></div>","PeriodicalId":18253,"journal":{"name":"Materials Today Physics","volume":"48 ","pages":"Article 101546"},"PeriodicalIF":10.0000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structural and electronic transformations in TiO2 induced by electric current\",\"authors\":\"Tyler C. Sterling ,&nbsp;Feng Ye ,&nbsp;Seohyeon Jo ,&nbsp;Anish Parulekar ,&nbsp;Yu Zhang ,&nbsp;Gang Cao ,&nbsp;Rishi Raj ,&nbsp;Dmitry Reznik\",\"doi\":\"10.1016/j.mtphys.2024.101546\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In-situ diffuse neutron scattering experiments revealed that when electric current is passed through single crystals of rutile TiO<sub>2</sub> under conditions conducive to flash sintering, it induces the formation of parallel planes of oxygen vacancies. Specifically, a current perpendicular to the <em>c</em>-axis generates planes normal to the (132) reciprocal lattice vector, whereas currents aligned with the <em>c</em>-axis form planes normal to the (132) and to the (225) vector. The concentration of defects increases with incresing current. The structural modifications are linked to the appearance of signatures of interacting Ti<sup>3+</sup> moments in magnetic susceptibility, signifying a structural collapse around the vacancy planes. Electrical conductivity measurements of the modified material reveal several electronic transitions between semiconducting states (via a metal-like intermediate state) with the smallest gap being 27 meV. Pristine TiO<sub>2</sub> can be restored by heating followed by slow cooling in air. Our work suggests a novel paradigm for achieving switching of electrical conductivity related to the flash phenomenon.</p></div>\",\"PeriodicalId\":18253,\"journal\":{\"name\":\"Materials Today Physics\",\"volume\":\"48 \",\"pages\":\"Article 101546\"},\"PeriodicalIF\":10.0000,\"publicationDate\":\"2024-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Today Physics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2542529324002220\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Today Physics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2542529324002220","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

原位弥散中子散射实验表明,在有利于闪烁烧结的条件下,当电流通过金红石二氧化钛单晶体时,会诱导氧空位平行平面的形成。具体来说,垂直于 c 轴的电流会产生与(132)倒易点阵矢量法线平行的平面,而与 c 轴对齐的电流则会形成与(132)和(225)矢量法线平行的平面。缺陷的浓度随着电流的增大而增加。结构的改变与磁感应强度中出现的相互作用 Ti3+ 矩的特征有关,这标志着空缺平面周围的结构坍塌。对改性材料的电导率测量显示了半导体态(通过类金属中间态)之间的若干电子跃迁,最小间隙为 27 meV。通过在空气中加热并缓慢冷却,可以恢复原始二氧化钛。我们的工作为实现与闪烁现象有关的导电性切换提供了一种新的范例。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Structural and electronic transformations in TiO2 induced by electric current

In-situ diffuse neutron scattering experiments revealed that when electric current is passed through single crystals of rutile TiO2 under conditions conducive to flash sintering, it induces the formation of parallel planes of oxygen vacancies. Specifically, a current perpendicular to the c-axis generates planes normal to the (132) reciprocal lattice vector, whereas currents aligned with the c-axis form planes normal to the (132) and to the (225) vector. The concentration of defects increases with incresing current. The structural modifications are linked to the appearance of signatures of interacting Ti3+ moments in magnetic susceptibility, signifying a structural collapse around the vacancy planes. Electrical conductivity measurements of the modified material reveal several electronic transitions between semiconducting states (via a metal-like intermediate state) with the smallest gap being 27 meV. Pristine TiO2 can be restored by heating followed by slow cooling in air. Our work suggests a novel paradigm for achieving switching of electrical conductivity related to the flash phenomenon.

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
Materials Today Physics
Materials Today Physics Materials Science-General Materials Science
CiteScore
14.00
自引率
7.80%
发文量
284
审稿时长
15 days
期刊介绍: Materials Today Physics is a multi-disciplinary journal focused on the physics of materials, encompassing both the physical properties and materials synthesis. Operating at the interface of physics and materials science, this journal covers one of the largest and most dynamic fields within physical science. The forefront research in materials physics is driving advancements in new materials, uncovering new physics, and fostering novel applications at an unprecedented pace.
期刊最新文献
Ultra-soft, foldable, wearable piezoelectric sensor based on the aligned BaTiO3 nanoparticles Mist CVD Technology for Gallium Oxide Deposition: A Review Atomic Imprint Crystallization: Externally-Templated Crystallization of Amorphous Silicon Achieving ultra-high resistivity and outstanding piezoelectric properties by co-substitution in CaBi2Nb2O9 ceramics Data-driven design of thermal-mechanical multifunctional metamaterials
×
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
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 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 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1