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

被引：2

作者：

Dai, Guangyang ^{[1
,2
]}

Zhang, Changling ^{[1
,2
]}

Zhang, Sijia ^{[1
]}

He, Xin ^{[1
,2
]}

Ren, Chongwen ^{[1
,2
]}

Zhao, Jianfa ^{[1
,2
]}

Li, Xiaodong ^{[3
]}

Wang, Xiancheng ^{[1
]}

Jin, Changqing ^{[1
,2
,4
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[2] Univ Chinese Acad Sci, Sch Phys, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[4] Mat Res Lab Songshan Lake, Dongguan 523808, Peoples R China

来源：

CRYSTALS | 2020年 / 10卷 / 09期

基金：

美国国家科学基金会;

关键词：

iron-based compound; high-pressure resistivity; high-pressure structure; PARENT COMPOUND; 43; K; SUPERCONDUCTIVITY;

D O I：

10.3390/cryst10090790

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

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 T-N similar to 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 B-0 was obtained to be 168.6 GPa.

引用

页码：1 / 7

页数：7

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