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  Synthesis, phase stability, structural, and physical properties of 11-type iron chalcogenides

Rößler, S., Koz, C., Wirth, S., & Schwarz, U. (2017). Synthesis, phase stability, structural, and physical properties of 11-type iron chalcogenides. Physica Status Solidi B, 254(1): 1600149, pp. 1-14. doi:10.1002/pssb.201600149.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-A6F8-3 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-F986-0
Genre: Journal Article

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 Creators:
Rößler, S.1, Author              
Koz, Cevriye2, Author              
Wirth, Steffen3, Author              
Schwarz, Ulrich4, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
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: This article reviews recent experimental investigations on two binary Fe-chalcogenides: FeSe and Fe1+yTe. The main focus is on synthesis, single crystal growth, chemical composition, as well as on the effect of excess iron on structural, magnetic, and transport properties of these materials. The structurally simplest Fe-based superconductor Fe1+xSe with a critical temperature Tc approximate to 8.5K undergoes a tetragonal to orthorhombic phase transition at a temperature Ts approximate to 87K. No long-range magnetic order is observed down to the lowest measured temperature in Fe1+xSe. On the other hand, isostructural Fe1+yTe displays a complex interplay of magnetic and structural phase transitions in dependence on the tuning parameter such as excess amount of Fe or pressure, but it becomes a superconductor only when Te is substituted by a sufficient amount of Se. We summarize experimental evidence for different competing interactions and discuss related open questions. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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Language(s): eng - English
 Dates: 2017-01-252017-01-25
 Publication Status: Published in print
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 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1002/pssb.201600149
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Title: Physica Status Solidi B
  Abbreviation : Phys. Stat. Sol. B
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 254 (1) Sequence Number: 1600149 Start / End Page: 1 - 14 Identifier: ISSN: 0370-1972
CoNE: /journals/resource/958480240330