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Investigating the vibrational lattice anisotropy in FeTe0.5Se0.5 using magnetically oriented crystallites

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Pohjonen, Reijo
dc.contributor.author Lindroos, Fredrik
dc.contributor.author Tewari, Girish C.
dc.contributor.author Lindén, Johan
dc.date.accessioned 2021-03-31T06:12:10Z
dc.date.available 2021-03-31T06:12:10Z
dc.date.issued 2020-05
dc.identifier.citation Pohjonen , R , Lindroos , F , Tewari , G C & Lindén , J 2020 , ' Investigating the vibrational lattice anisotropy in FeTe 0.5 Se 0.5 using magnetically oriented crystallites ' , Solid State Communications , vol. 312 , 113877 . https://doi.org/10.1016/j.ssc.2020.113877 en
dc.identifier.issn 0038-1098
dc.identifier.issn 1879-2766
dc.identifier.other PURE UUID: 0cc0fd5f-607c-46ec-ab20-6c723c8c3988
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/0cc0fd5f-607c-46ec-ab20-6c723c8c3988
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85082402514&partnerID=8YFLogxK
dc.identifier.other PURE LINK: https://urn.fi/URN:NBN:fi-fe202201147727
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/103375
dc.description.abstract An iron chalcogenide sample with nominal composition FeTe0.5Se0.5 was synthesized following a solid-state reaction route. X-ray diffraction followed by Rietveld analysis were used for verifying the phase content. Using the field of an 11.7 T magnet textured samples, having the c axes parallel with and normal to the sample surface, were made. 57Fe Mössbauer spectroscopy in transmission geometry was used for characterizing the hyperfine parameters of the iron site. Clear indications of vibrational anisotropy, i.e. the Goldanskii-Karyagin effect, were observed. Fitting spectral absorption with the Debye model yielded rather low Debye temperatures of 255(3) and 303(3) K, for samples texturized with the c axis parallel with and perpendicular to the Mössbauer γ beam, respectively. Also the second-order Doppler shift of the isomer shift data exhibited a similar, although weaker, anisotropy. en
dc.format.extent 5
dc.language.iso en en
dc.relation.ispartofseries Solid State Communications en
dc.relation.ispartofseries Volume 312 en
dc.rights openAccess en
dc.title Investigating the vibrational lattice anisotropy in FeTe0.5Se0.5 using magnetically oriented crystallites en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Åbo Akademi University
dc.contributor.department Department of Chemistry and Materials Science
dc.subject.keyword A. Chalcogenide superconductors
dc.subject.keyword C. Rietveld analysis
dc.subject.keyword D. Goldanskii-Karyagin effect
dc.subject.keyword E. Fe Mössbauer spectroscopy
dc.identifier.urn URN:NBN:fi:aalto-202103312648
dc.identifier.doi 10.1016/j.ssc.2020.113877
dc.date.embargo info:eu-repo/date/embargoEnd/2022-03-27

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