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This content will become publicly available on April 20, 2019

Title: Single Crystal Growth and Study of the Ferromagnetic Superconductor RbEuFe 4As 4

RbEuFe 4As 4 exhibits both superconducting order 0.05 in the FeAs layers and ferromagnetic order in the Eu layers, providing a good platform to study the interaction and microscopic coexistence of these two traditionally incompatible orders. Growing high-quality RbEuFe 4As 4 single crystals is essential to investigate these phenomena at a deeper level. Here in this paper we report the successful growth of the RbEuFe 4As 4 single crystals with millimeter-size dimensions using a RbAs flux. The high-quality crystals were characterized via resistivity, magnetization, and heat capacity measurements. Single crystal X-ray diffraction data refinements reveal almost regular FeAs 4 tetrahedra (As1-Fe-As1 = 108.60(7)degrees, As2-Fe-As2 = 109.01 (8)degrees, and As1-Fe-As2 = 109.81(2)degrees) in RbEuFe 4As 4, providing structural support for the highest superconducting transition temperature (T c = 36.8 K) among all known AAeFe 4As 4 (A = K, Rb, Cs; Ae = Ca, Sr, Eu) compounds. Finally, our flux method using RbAs can also be employed to grow other desired transition metal compounds targeting the same crystal structure.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ; ORCiD logo [2] ;  [1] ;  [1] ; ORCiD logo [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Crystal Growth and Design
Additional Journal Information:
Journal Volume: 18; Journal Issue: 6; Journal ID: ISSN 1528-7483
Publisher:
American Chemical Society
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1460964