Size-driven phase evolution in ultrathin relaxor films
文献类型：期刊论文
| 作者 | Kim, Jieun1,2; Qi, Yubo3,4; Kumar, Abinash5; Tang, Yun-Long1,6,7; Xu, Michael5; Takenaka, Hiroyuki8; Zhu, Menglin5; Tian, Zishen1,12; Ramesh, Ramamoorthy1,9,10,11,12; Lebeau, James M.5 |
| 刊名 | NATURE NANOTECHNOLOGY
 |
| 出版日期 | 2025-02-11 |
| 页码 | 12 |
| ISSN号 | 1748-3387 |
| DOI | 10.1038/s41565-025-01863-x |
| 通讯作者 | Martin, Lane W.(lwmartin@rice.edu) |
| 英文摘要 | Relaxor ferroelectrics (relaxors) are a special class of ferroelectrics with polar nanodomains (PNDs), which present characteristics such as slim hysteresis loops and strong dielectric relaxation. Applications such as nanoelectromechanical systems, capacitive-energy storage and pyroelectric-energy harvesters require thin-film relaxors. Hence, understanding relaxor behaviour in the ultrathin limit is of both fundamental and technological importance. Here the evolution of relaxor phases and PNDs with thickness is explored in prototypical thin relaxor films. Epitaxial 0.68PbMg1/3Nb2/3O3-0.32PbTiO3 films of various nanometre thicknesses are grown by pulsed-laser deposition and characterized by ferroelectric and dielectric measurements, temperature-dependent synchrotron X-ray diffuse scattering, scanning transmission electron microscopy and molecular dynamics simulations. As the film thickness approaches the length of the long axis of the PNDs (25-30 nm), electrostatically driven phase instabilities induce their rotation towards the plane of the films, stabilize the relaxor behaviour and give rise to anisotropic phase evolution along the out-of-plane and in-plane directions. The complex anisotropic evolution of relaxor properties ends in a collapse of the relaxor behaviour when the film thickness reaches the smallest dimension of the PNDs (6-10 nm). These findings establish that PNDs define the critical length scale for the evolution of relaxor behaviour at the nanoscale. |
| 资助项目 | United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Laboratory (U.S. Army Research Laboratory)[W911NF-21-1-0118] ; Army Research Office[N00014-24-1-2500] ; Office of Naval Research[RII-Track-1] ; Office of Naval Research[OIA-2148653] ; National Science Foundation EPSCoR[51922100] ; National Natural Science Foundation of China[Y202048] ; Youth Innovation Promotion Association CAS[W911NF-24-2-0100] ; Army Research Laboratory[FA9550-24-1-0266] ; Air Force Office of Scientific Research[DE-AC02-06CH11357] ; DOE Office of Science by Argonne National Laboratory |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001417795400001 |
| 出版者 | NATURE PORTFOLIO |
| 资助机构 | United States Department of Defense | United States Army | U.S. Army Research, Development and Engineering Command | Army Research Laboratory (U.S. Army Research Laboratory) ; Army Research Office ; Office of Naval Research ; National Science Foundation EPSCoR ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Army Research Laboratory ; Air Force Office of Scientific Research ; DOE Office of Science by Argonne National Laboratory |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Martin, Lane W. |
| 作者单位 | 1.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA USA 2.Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Daejeon, South Korea 3.Univ Penn, Dept Chem, Philadelphia, PA USA 4.Univ Alabama Birmingham, Dept Phys, Birmingham, AL USA 5.MIT, Dept Mat Sci & Engn, Cambridge, MA USA 6.Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA 7.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 8.Univ Calif Santa Cruz, Dept Chem & Biochem, Santa Cruz, CA USA 9.Univ Calif Berkeley, Phys Dept, Berkeley, CA USA 10.Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 USA |
| 推荐引用方式 GB/T 7714 | Kim, Jieun,Qi, Yubo,Kumar, Abinash,et al. Size-driven phase evolution in ultrathin relaxor films[J]. NATURE NANOTECHNOLOGY,2025:12. |
| APA | Kim, Jieun.,Qi, Yubo.,Kumar, Abinash.,Tang, Yun-Long.,Xu, Michael.,...&Martin, Lane W..(2025).Size-driven phase evolution in ultrathin relaxor films.NATURE NANOTECHNOLOGY,12. |
| MLA | Kim, Jieun,et al."Size-driven phase evolution in ultrathin relaxor films".NATURE NANOTECHNOLOGY (2025):12. |
入库方式： OAI收割
来源：金属研究所
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