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Title: Itinerant G-type antiferromagnetic order in SrCr 2 As 2

Here, neutron-diffraction and magnetic susceptibility studies of polycrystalline SrCr 2As 2 reveal that this compound is an itinerant G-type antiferromagnet below the Néel temperature T N = 590(5) K with the Cr magnetic moments aligned along the tetragonal c axis. The system remains tetragonal to the lowest measured temperature (~12 K). The lattice parameter ratio c/a and the magnetic moment saturate at about the same temperature below ~200 K, indicating a possible magnetoelastic coupling. The ordered moment μ = 1.9(1)μ B/Cr, measured at T = 12 K, is significantly reduced compared to its localized value (4μ B/Cr) due to the itinerant character brought about by hybridization between the Cr 3d and As 4p orbitals.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Univ. of Missouri, Columbia, MO (United States)
Publication Date:
Report Number(s):
IS-J-9412
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1702791
Grant/Contract Number:
AC02-07CH11358
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 1; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Ames Lab., Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1374740
Alternate Identifier(s):
OSTI ID: 1368612

Das, Pinaki, Sangeetha, N. S., Lindemann, George R., Heitmann, T. W., Kreyssig, Andreas, Goldman, Alan I., McQueeney, Robert J., Johnston, David C., and Vaknin, David. Itinerant G-type antiferromagnetic order in SrCr2As2. United States: N. p., Web. doi:10.1103/PhysRevB.96.014411.
Das, Pinaki, Sangeetha, N. S., Lindemann, George R., Heitmann, T. W., Kreyssig, Andreas, Goldman, Alan I., McQueeney, Robert J., Johnston, David C., & Vaknin, David. Itinerant G-type antiferromagnetic order in SrCr2As2. United States. doi:10.1103/PhysRevB.96.014411.
Das, Pinaki, Sangeetha, N. S., Lindemann, George R., Heitmann, T. W., Kreyssig, Andreas, Goldman, Alan I., McQueeney, Robert J., Johnston, David C., and Vaknin, David. 2017. "Itinerant G-type antiferromagnetic order in SrCr2As2". United States. doi:10.1103/PhysRevB.96.014411. https://www.osti.gov/servlets/purl/1374740.
@article{osti_1374740,
title = {Itinerant G-type antiferromagnetic order in SrCr2As2},
author = {Das, Pinaki and Sangeetha, N. S. and Lindemann, George R. and Heitmann, T. W. and Kreyssig, Andreas and Goldman, Alan I. and McQueeney, Robert J. and Johnston, David C. and Vaknin, David},
abstractNote = {Here, neutron-diffraction and magnetic susceptibility studies of polycrystalline SrCr2As2 reveal that this compound is an itinerant G-type antiferromagnet below the Néel temperature TN = 590(5) K with the Cr magnetic moments aligned along the tetragonal c axis. The system remains tetragonal to the lowest measured temperature (~12 K). The lattice parameter ratio c/a and the magnetic moment saturate at about the same temperature below ~200 K, indicating a possible magnetoelastic coupling. The ordered moment μ = 1.9(1)μB/Cr, measured at T = 12 K, is significantly reduced compared to its localized value (4μB/Cr) due to the itinerant character brought about by hybridization between the Cr 3d and As 4p orbitals.},
doi = {10.1103/PhysRevB.96.014411},
journal = {Physical Review B},
number = 1,
volume = 96,
place = {United States},
year = {2017},
month = {7}
}