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Crystal structure a...
Crystal structure and phase transitions at high pressures in the superconductor FeSe0.89S0.11
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- Nikiforova, Yulia A. (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Ivanova, Anna G. (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Frolov, Kirill, V (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Lyubutin, Igor S. (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Chareev, Dmitriy A. (author)
- Russian Acad Sci, Inst Expt Mineral, Chernogolovka 142432, Moscow Region, Russia.
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- Baskakov, Arseniy O. (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Starchikov, Sergey S. (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Troyan, Ivan A. (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Lyubutina, Mariana, V (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Naumov, Pavel G. (author)
- Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia.
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- Abdel-Hafiez, Mahmoud (author)
- Uppsala universitet,Institutionen för fysik och astronomi
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Russian Acad Sci, Shubnikov Inst Crystallog FSRC Crystallog & Photo, Moscow 119333, Russia Russian Acad Sci, Inst Expt Mineral, Chernogolovka 142432, Moscow Region, Russia. (creator_code:org_t)
- Elsevier, 2021
- 2021
- English.
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In: Journal of Alloys and Compounds. - : Elsevier. - 0925-8388 .- 1873-4669. ; 860
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Abstract
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- We report on the structural phase transitions in the FeSe0.89S0.11 superconductor with T-C = 11 K observed by powder synchrotron X-ray diffraction at high pressures up to 18.5 GPa under compression and decompression modes. It was found that at ambient pressure and room temperature, FeSe0.89S0.11 has a tetragonal structure (space group NM). Under compression, in the region of 10 GPa, a phase transition from the tetragonal into the orthorhombic structure (sp. gr . Pnma) is observed, which persists up to 18.5 GPa. Our results strongly suggest that, at decompression, as the applied pressure decreases to 6 GPa and then is completely removed, most of the sample recrystallizes into the hexagonal phase of the structural type NiAs (sp. gr . P6(3)/mmc). However, the other part of the sample remains in the high pressure orthorhombic phase (sp. gr . Pnma), while the tetragonal phase (sp. gr . P4/n) is not restored. These observations illustrate a strong hysteresis of the structural properties of FeSe0.89S0.11 during a phase transition under pressure. (C) 2020 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Iron-based superconductors
- High pressure
- Single crystal X-ray diffraction
- Powder X-ray diffraction
- Structural phase transition
Publication and Content Type
- ref (subject category)
- art (subject category)
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Nikiforova, Yuli ...
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Ivanova, Anna G.
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Frolov, Kirill, ...
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Lyubutin, Igor S ...
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Chareev, Dmitriy ...
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Baskakov, Arseni ...
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Starchikov, Serg ...
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Troyan, Ivan A.
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Lyubutina, Maria ...
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Naumov, Pavel G.
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Abdel-Hafiez, Ma ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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Journal of Alloy ...
- By the university
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Uppsala University