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  Low-temperature phase diagram of Fe1+yTe studied using x-ray diffraction

Koz, C., Rößler, S., Tsirlin, A. A., Wirth, S., & Schwarz, U. (2013). Low-temperature phase diagram of Fe1+yTe studied using x-ray diffraction. Physical Review B, 88(9): 094509, pp. 094509-1-094509-10. doi:10.1103/PhysRevB.88.094509.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-1E54-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-F995-F
Genre: Journal Article

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 Creators:
Koz, C.1, Author              
Rößler, S.2, Author              
Tsirlin, A. A.1, Author              
Wirth, S.3, Author              
Schwarz, U.4, 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: We used low-temperature synchrotron x-ray diffraction to investigate the structural phase transitions of Fe1+y Te in the vicinity of a tricitical point in the phase diagram. A detailed analysis of the powder diffraction patterns and temperature dependence of the peak widths in Fe1+y Te showed that two-step structural and magnetic phase transitions occur within the compositional range 0.11 <= y <= 0.13. The phase transitions are sluggish, indicating a strong competition between the orthorhombic and the monoclinic phases. We combine high-resolution diffraction experiments with specific heat, resistivity, and magnetization measurements and present a revised temperature-composition phase diagram for Fe1+y Te.

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Language(s): eng - English
 Dates: 2013-09-18
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 670768
ISI: 000324539100001
DOI: 10.1103/PhysRevB.88.094509
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Title: Physical Review B
Source Genre: Journal
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Pages: - Volume / Issue: 88 (9) Sequence Number: 094509 Start / End Page: 094509-1 - 094509-10 Identifier: ISSN: 1098-0121