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Local Chemical Strain in PtFe Alloy Nanoparticles
Li, Q; Zhu, H; Zheng LR(郑黎荣); Zheng, LR; Liu, H; Ren, Y; Wang, N; Chen, J; Deng, JX; Xing, XR
2018
Source PublicationINORGANIC CHEMISTRY
ISSN0020-1669
EISSN1520-510X
Volume57Issue:17Pages:10494-10497
SubtypeArticle
AbstractPrecise 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.
DOI10.1021/acs.inorgchem.8b01845
WOS KeywordFEPT NANOPARTICLES ; REDUCTION ; EXPANSION ; BEHAVIOR ; LATTICE ; OXYGEN ; IRON
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Inorganic & Nuclear
WOS IDWOS:000443923700004
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/286314
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Li, Q,Zhu, H,Zheng LR,et al. Local Chemical Strain in PtFe Alloy Nanoparticles[J]. INORGANIC CHEMISTRY,2018,57(17):10494-10497.
APA Li, Q.,Zhu, H.,郑黎荣.,Zheng, LR.,Liu, H.,...&Xing, XR.(2018).Local Chemical Strain in PtFe Alloy Nanoparticles.INORGANIC CHEMISTRY,57(17),10494-10497.
MLA Li, Q,et al."Local Chemical Strain in PtFe Alloy Nanoparticles".INORGANIC CHEMISTRY 57.17(2018):10494-10497.
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