The synthesis and characterization of LiFeAs and NaFeAs

被引：122

作者：

Chu, C. W. ^{[1
,2
,3
,4
]}

Chen, F. ^{[1
,2
]}

Gooch, M. ^{[1
,2
]}

Guloy, A. M. ^{[2
,5
]}

Lorenz, B. ^{[1
,2
]}

Lv, B. ^{[2
,5
]}

Sasmal, K. ^{[1
,2
]}

Tang, Z. J. ^{[2
,5
]}

Tapp, J. H. ^{[2
,5
]}

Xue, Y. Y. ^{[1
,2
]}

机构：

[1] Univ Houston, Texas Ctr Superconduct, Dept Phys, Houston, TX 77204 USA

[2] Univ Houston, TCSUH, Houston, TX 77204 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[4] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China

[5] Univ Houston, Dept Chem, Houston, TX 77204 USA

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2009年 / 469卷 / 9-12期

关键词：

Pnictide superconductors; LiFeAs; NaFeAs; Magnetization; Transport measurements; LAYERED SUPERCONDUCTOR; CRYSTAL-STRUCTURE; IRON; METAL;

D O I：

10.1016/j.physc.2009.03.016

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The newest homologous series of superconducting Fe-pnictides. LiFeAs (Li111) and NaFeAs (Na111) have been synthesized and investigated. Both crystallize with the layered tetragonal anti-PbFCI-type structure in P4/nmm space group. Polycrystalline samples and single crystals of Li111 and Na111 display superconducting transitions at similar to 18 K and 12-25 K. respectively. No magnetic order has been found in either compound, although a weak magnetic background is clearly in evidence. The origin of the carriers and the stoichiometric compositions of Li111 and Na111 were explored. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：326 / 331

页数：6

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