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Open AccessArticle

Crystal Growth and Investigation of High-Pressure Physical Properties of Fe2As

1
Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2
School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China
3
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
4
Materials Research Laboratory at Songshan Lake, Dongguan 523808, China
*
Authors to whom correspondence should be addressed.
Crystals 2020, 10(9), 790; https://doi.org/10.3390/cryst10090790
Received: 9 August 2020 / Revised: 29 August 2020 / Accepted: 4 September 2020 / Published: 6 September 2020
(This article belongs to the Special Issue Magnetіc Structure Compounds)
We reported the growth of Fe2As single crystals and the study of its physical properties via comprehensive measurements, such as transport properties under pressure and high-pressure synchrotron radiation X-ray diffraction. Fe2As is an antiferromagnetic metal with TN ~ 355 K. Within the pressure range of 100 GPa, no superconductivity was observed above 2 K. The abrupt drop in resistance from 21 to 31.7 GPa suggests a high-pressure phase transition happens. The high-pressure X-ray experiments indicate a new high-pressure phase appears, starting from 27.13 GPa. After the refinement of the high-pressure X-ray data, the pressure dependence of lattice constants of Fe2As (P4/nmm phase) was plotted and the bulk modulus B0 was obtained to be 168.6 GPa. View Full-Text
Keywords: iron-based compound; high-pressure resistivity; high-pressure structure iron-based compound; high-pressure resistivity; high-pressure structure
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MDPI and ACS Style

Dai, G.; Zhang, C.; Zhang, S.; He, X.; Ren, C.; Zhao, J.; Li, X.; Wang, X.; Jin, C. Crystal Growth and Investigation of High-Pressure Physical Properties of Fe2As. Crystals 2020, 10, 790.

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