Local Chemical Strain in PtFe Alloy Nanoparticles
文献类型：期刊论文
| 作者 | Zheng, LR ; Zheng LR(郑黎荣); Zhu, H; Li, Q; Xing, XR; Deng, JX; Chen, J; Wang, N; Ren, Y; Liu, H
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| 刊名 | INORGANIC CHEMISTRY
 |
| 出版日期 | 2018 |
| 卷号 | 57期号:17页码:10494-10497 |
| ISSN号 | 0020-1669 |
| DOI | 10.1021/acs.inorgchem.8b01845 |
| 文献子类 | Article |
| 英文摘要 | Precise deciphering of the atomic-insight chemical strain and distribution in nanosolids, especially in nanoalloys with disordered structure, is significant to correlate the structure and chemical properties. In this report, we found an abnormally enhanced negative thermal expansion (NTE) along the c axis in a 3.5 nm PtFe magnetic L1(0) alloy, which was usually weakened by the reduced contribution of invar behavior in a nanosized magnetic material. Fe-57 Mossbauer spectra and extended X-ray absorption fine structure studies indicated the local disordered state of chemical coordination of the L1(0) phase. Pair distribution function and reverse Monte Carlo simulation revealed a surface Al-phase coating and atomic-level stretching chemical strain on the heteroatomic pair along the c axis. Local tensile chemical strain and increasing magnetic moments of Fe atoms on the surface of the L1(0) core made a dominant contribution to the enhanced NTE behavior. The present work brings an atomic reveal for the local chemical strain in bimetallic nanomaterials and provides an innovative perspective to tailoring the functional properties according to the local chemical environment. |
| 电子版国际标准刊号 | 1520-510X |
| WOS关键词 | FEPT NANOPARTICLES ; REDUCTION ; EXPANSION ; BEHAVIOR ; LATTICE ; OXYGEN ; IRON |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000443923700004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286314]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zheng, LR,Zheng LR,Zhu, H,et al. Local Chemical Strain in PtFe Alloy Nanoparticles[J]. INORGANIC CHEMISTRY,2018,57(17):10494-10497. |
| APA | Zheng, LR.,郑黎荣.,Zhu, H.,Li, Q.,Xing, XR.,...&Liu, H.(2018).Local Chemical Strain in PtFe Alloy Nanoparticles.INORGANIC CHEMISTRY,57(17),10494-10497. |
| MLA | Zheng, LR,et al."Local Chemical Strain in PtFe Alloy Nanoparticles".INORGANIC CHEMISTRY 57.17(2018):10494-10497. |
入库方式： OAI收割
来源：高能物理研究所
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