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Title: Origin of the net magnetic moment in LaCoO 3

We use polarized neutron scattering to characterize the Bragg scattering intensity below T C=89.5 K at the (1,0,0) pseudocubic nuclear Bragg point of LaCoO 3. Upon cooling in a field (FC), a net magnetic moment is apparent in Bragg scattering intensity, just as it was in previous magnetization measurements. Critical behavior associated with the net moment near T C upon cooling in small applied fields rapidly rounds with increasing field strength. We show, using a mean-field calculation, that this net moment can develop in a metastable state that forms upon FC, even when all the interactions in the system are antiferromagnetic.
Authors:
 [1] ;  [1] ; ORCiD logo [2] ; ORCiD logo [2] ;  [3] ; ORCiD logo [2] ; ORCiD logo [2]
  1. Univ. of California, Santa Cruz, CA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Renmin Univ. of China, Beijing (China)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 2; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1427707
Alternate Identifier(s):
OSTI ID: 1417507

Kaminsky, G., Belanger, David P., Ye, Feng, Fernandez-Baca, Jaime A., Wang, Jinchen, Matsuda, Masaaki, and Yan, Jiaqiang. Origin of the net magnetic moment in LaCoO3. United States: N. p., Web. doi:10.1103/PhysRevB.97.024418.
Kaminsky, G., Belanger, David P., Ye, Feng, Fernandez-Baca, Jaime A., Wang, Jinchen, Matsuda, Masaaki, & Yan, Jiaqiang. Origin of the net magnetic moment in LaCoO3. United States. doi:10.1103/PhysRevB.97.024418.
Kaminsky, G., Belanger, David P., Ye, Feng, Fernandez-Baca, Jaime A., Wang, Jinchen, Matsuda, Masaaki, and Yan, Jiaqiang. 2018. "Origin of the net magnetic moment in LaCoO3". United States. doi:10.1103/PhysRevB.97.024418.
@article{osti_1427707,
title = {Origin of the net magnetic moment in LaCoO3},
author = {Kaminsky, G. and Belanger, David P. and Ye, Feng and Fernandez-Baca, Jaime A. and Wang, Jinchen and Matsuda, Masaaki and Yan, Jiaqiang},
abstractNote = {We use polarized neutron scattering to characterize the Bragg scattering intensity below TC=89.5 K at the (1,0,0) pseudocubic nuclear Bragg point of LaCoO3. Upon cooling in a field (FC), a net magnetic moment is apparent in Bragg scattering intensity, just as it was in previous magnetization measurements. Critical behavior associated with the net moment near TC upon cooling in small applied fields rapidly rounds with increasing field strength. We show, using a mean-field calculation, that this net moment can develop in a metastable state that forms upon FC, even when all the interactions in the system are antiferromagnetic.},
doi = {10.1103/PhysRevB.97.024418},
journal = {Physical Review B},
number = 2,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}