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Title: 57Fe Mössbauer study of stoichiometric iron-based superconductor CaKFe4As4: a comparison to KFe2As2 and CaFe2As2

Abstract

57Fe Mössbauer spectra at different temperatures between ~5 and ~300 K were measured on an oriented mosaic of single crystals of CaKFe4 As4. The data indicate that is a well formed compound with narrow spectral lines, no traces of other, Fe – containing, secondary phases in the spectra and no static magnetic order. There is no discernible feature at the superconducting transition temperature in any of the hyperfine parameters. The temperature dependence of the quadrupole splitting approximately follows the empirical ‘T3/2 law’. Furthermore, the hyperfine parameters of CaKFe4 As4 are compared with those for measured in this work, and the literature data for CaFe2 As2, and were found to be in between those for these two, ordered, 122 compounds, in agreement with the gross view of CaKFe4 As4 as a structural analog of KFe2 As2 and CaFe2 As2 that has alternating Ca- and K-layers in the structure.

Authors:
 [1]; ORCiD logo [2];  [1];  [3];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States); Princeton Univ., Princeton, NJ (United States)
  3. Chinese Academy of Sciences, Beijing (China); South Univ. of Science and Technology of China, Shenzhen (China)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1379173
Report Number(s):
IS-J-9429
Journal ID: ISSN 1478-6435
Grant/Contract Number:  
GBMF4411; AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Philosophical Magazine (2003, Print)
Additional Journal Information:
Journal Name: Philosophical Magazine (2003, Print); Journal Volume: 97; Journal Issue: 29; Journal ID: ISSN 1478-6435
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; superconductors; Mössbauer spectroscopy; hyperfine parameters

Citation Formats

Bud’ko, Sergey L., Kong, Tai, Meier, William R., Ma, Xiaoming, and Canfield, Paul C. 57Fe Mössbauer study of stoichiometric iron-based superconductor CaKFe4As4: a comparison to KFe2As2 and CaFe2As2. United States: N. p., 2017. Web. doi:10.1080/14786435.2017.1347726.
Bud’ko, Sergey L., Kong, Tai, Meier, William R., Ma, Xiaoming, & Canfield, Paul C. 57Fe Mössbauer study of stoichiometric iron-based superconductor CaKFe4As4: a comparison to KFe2As2 and CaFe2As2. United States. https://doi.org/10.1080/14786435.2017.1347726
Bud’ko, Sergey L., Kong, Tai, Meier, William R., Ma, Xiaoming, and Canfield, Paul C. Thu . "57Fe Mössbauer study of stoichiometric iron-based superconductor CaKFe4As4: a comparison to KFe2As2 and CaFe2As2". United States. https://doi.org/10.1080/14786435.2017.1347726. https://www.osti.gov/servlets/purl/1379173.
@article{osti_1379173,
title = {57Fe Mössbauer study of stoichiometric iron-based superconductor CaKFe4As4: a comparison to KFe2As2 and CaFe2As2},
author = {Bud’ko, Sergey L. and Kong, Tai and Meier, William R. and Ma, Xiaoming and Canfield, Paul C.},
abstractNote = {57Fe Mössbauer spectra at different temperatures between ~5 and ~300 K were measured on an oriented mosaic of single crystals of CaKFe4 As4. The data indicate that is a well formed compound with narrow spectral lines, no traces of other, Fe – containing, secondary phases in the spectra and no static magnetic order. There is no discernible feature at the superconducting transition temperature in any of the hyperfine parameters. The temperature dependence of the quadrupole splitting approximately follows the empirical ‘T3/2 law’. Furthermore, the hyperfine parameters of CaKFe4 As4 are compared with those for measured in this work, and the literature data for CaFe2 As2, and were found to be in between those for these two, ordered, 122 compounds, in agreement with the gross view of CaKFe4 As4 as a structural analog of KFe2 As2 and CaFe2 As2 that has alternating Ca- and K-layers in the structure.},
doi = {10.1080/14786435.2017.1347726},
journal = {Philosophical Magazine (2003, Print)},
number = 29,
volume = 97,
place = {United States},
year = {Thu Jul 06 00:00:00 EDT 2017},
month = {Thu Jul 06 00:00:00 EDT 2017}
}

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Works referencing / citing this record:

Study of the Rare Earth Effects on the Magnetic Fluctuations in RbLn2Fe4As4O2 (Ln = $=$ Tb, Dy, and Ho) by Mössbauer Spectroscopy
journal, May 2018

  • Li, Zhiwei; Li, Yang; Wang, Zhicheng
  • Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 2
  • DOI: 10.1007/s10948-018-4721-9

57 Fe Mössbauer and magnetic studies of Th 7 Co 2.557 Fe 0.5 and Th 7 Ni 2.557 Fe 0.5 superconductors
journal, September 2019