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Title: Magnetic and structural transitions in EuAg 4As 2 studied using 151Eu Mössbauer spectroscopy

Abstract

151Eu Mössbauer spectroscopy confirms that the europium in EuAg 4As 2 is fully divalent and that the spectrum at 5 K consists of a single, sharp magnetic pattern with a hyperfine field (B hf) of 27.1(1) T and an isomer shift of -11.04(3) mm/s (relative to EuF 3). The temperature dependence of the spectra shows that the ordering of the Eu moments proceeds via an incommensurate sine modulated structure starting at 15 K. The structure squares up below 9 K. A search for charge density or phonon softening signatures at the 120 K structural transition was not successful

Authors:
ORCiD logo [1];  [2];  [3];  [3]
  1. McGill Univ., Montreal, QC (Canada)
  2. Ames Lab., Ames, IA (United States)
  3. Univ. of California, Los Angeles, CA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1595768
Alternate Identifier(s):
OSTI ID: 1580632
Report Number(s):
IS-J-10140
Journal ID: ISSN 2158-3226
Grant/Contract Number:  
SC0011978; AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 9; Journal Issue: 12; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Ryan, D. H., Bud’ko, Sergey L., Hu, Chaowei, and Ni, N. Magnetic and structural transitions in EuAg4As2 studied using 151Eu Mössbauer spectroscopy. United States: N. p., 2019. Web. doi:10.1063/1.5129682.
Ryan, D. H., Bud’ko, Sergey L., Hu, Chaowei, & Ni, N. Magnetic and structural transitions in EuAg4As2 studied using 151Eu Mössbauer spectroscopy. United States. doi:10.1063/1.5129682.
Ryan, D. H., Bud’ko, Sergey L., Hu, Chaowei, and Ni, N. Sun . "Magnetic and structural transitions in EuAg4As2 studied using 151Eu Mössbauer spectroscopy". United States. doi:10.1063/1.5129682. https://www.osti.gov/servlets/purl/1595768.
@article{osti_1595768,
title = {Magnetic and structural transitions in EuAg4As2 studied using 151Eu Mössbauer spectroscopy},
author = {Ryan, D. H. and Bud’ko, Sergey L. and Hu, Chaowei and Ni, N.},
abstractNote = {151Eu Mössbauer spectroscopy confirms that the europium in EuAg4As2 is fully divalent and that the spectrum at 5 K consists of a single, sharp magnetic pattern with a hyperfine field (Bhf) of 27.1(1) T and an isomer shift of -11.04(3) mm/s (relative to EuF3). The temperature dependence of the spectra shows that the ordering of the Eu moments proceeds via an incommensurate sine modulated structure starting at 15 K. The structure squares up below 9 K. A search for charge density or phonon softening signatures at the 120 K structural transition was not successful},
doi = {10.1063/1.5129682},
journal = {AIP Advances},
number = 12,
volume = 9,
place = {United States},
year = {2019},
month = {12}
}

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Works referenced in this record:

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