IHEP OpenIR  > 北京同步辐射装置
Spontaneous phase segregation of Sr2NiO3 and SrNi2O3 during SrNiO3 heteroepitaxy
BSRF用户
2021
Source PublicationSCIENCE ADVANCES
ISSN2375-2548
Volume7Issue:10Pages:eabe2866
SubtypeArticle
AbstractRecent discovery of superconductivity in Nd0.8Sr0.2NiO2 motivates the synthesis of other nickelates for providing insights into the origin of high-temperature superconductivity. However, the synthesis of stoichiometric R1-xSrxNiO3 thin films over a range of x has proven challenging. Moreover, little is known about the structures and properties of the end member SrNiO3. Here, we show that spontaneous phase segregation occurs while depositing SrNiO3 thin films on perovskite oxide substrates by molecular beam epitaxy. Two coexisting oxygen-deficient Ruddlesden-Popper phases, Sr2NiO3 and SrNi2O3, are formed to balance the stoichiometry and stabilize the energetically preferred Ni2+ cation. Our study sheds light on an unusual oxide thin-film nucleation process driven by the instability in perovskite structured SrNiO3 and the tendency of transition metal cations to form their most stable valence (i.e., Ni2+ in this case). The resulting metastable reduced Ruddlesden-Popper structures offer a testbed for further studying emerging phenomena in nickel-based oxides.
DOI10.1126/sciadv.abe2866
Indexed BySCI ; ADS
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000628612000008
ADS Bibcode2021SciA....7.2866W
ADS URLhttps://ui.adsabs.harvard.edu/abs/2021SciA....7.2866W
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2021SciA....7.2866W/citations
ItemNoBSRF00915
beamline4B9B
Citation statistics
Cited Times:5 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/293683
Collection北京同步辐射装置
Recommended Citation
GB/T 7714
BSRF用户. Spontaneous phase segregation of Sr2NiO3 and SrNi2O3 during SrNiO3 heteroepitaxy[J]. SCIENCE ADVANCES,2021,7(10):eabe2866.
APA BSRF用户.(2021).Spontaneous phase segregation of Sr2NiO3 and SrNi2O3 during SrNiO3 heteroepitaxy.SCIENCE ADVANCES,7(10),eabe2866.
MLA BSRF用户."Spontaneous phase segregation of Sr2NiO3 and SrNi2O3 during SrNiO3 heteroepitaxy".SCIENCE ADVANCES 7.10(2021):eabe2866.
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