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  Homogeneity Range of Ternary 11-Type Chalcogenides Fe1+y Te1-xSex

Koz, C., Rößler, S., Wirth, S., & Schwarz, U. (2017). Homogeneity Range of Ternary 11-Type Chalcogenides Fe1+y Te1-xSex. Journal of Superconductivity and Novel Magnetism, 30(7), 2001-2006. doi:10.1007/s10948-016-3632-x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-AC88-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-ACC1-A
Genre: Journal Article

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 Creators:
Koz, C.1, Author              
Rößler, Sahana2, Author              
Wirth, Steffen3, Author              
Schwarz, Ulrich4, Author              
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
3Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863460              
4Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863423              

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 Abstract: The 11-type Fe-chalcogenides belong to the family of Fe-based superconductors. In these compounds, the interstitial Fe is known to strongly influence the magnetic and superconducting properties. Here, we present the chemical homogeneity range of ternary compounds Fe1 + y Te1-x Se (x) based on powder x-ray diffraction, energy dispersive x-ray analysis, and magnetization measurements. Our investigations show that the maximum amount of excess Fe in homogeneous Fe1 + y Te1-x Se (x) decreases with increase in Se substitution for Te. Using our synthesis procedure, single-phase Fe1 + y Te1-x Se (x) , with 0.5 ae<currency> x < 1 could not be formed for any amount of excess Fe. Further, the superconducting volume fraction in the material is found to be strongly suppressed by excess Fe.

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Language(s): eng - English
 Dates: 2017-06-272017-06-27
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000403590300038
DOI: 10.1007/s10948-016-3632-x
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Title: Journal of Superconductivity and Novel Magnetism
Source Genre: Journal
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Publ. Info: New York : Springer Science + Business Media B.V.
Pages: - Volume / Issue: 30 (7) Sequence Number: - Start / End Page: 2001 - 2006 Identifier: ISSN: 1557-1939
CoNE: https://pure.mpg.de/cone/journals/resource/954925560560