Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material
Abstract
In this paper, the physical properties of the spinel LiGaCr4S8 have been studied with neutron diffraction, x-ray diffraction, magnetic susceptibility, and heat capacity measurements. The neutron diffraction and synchrotron x-ray diffraction data reveal negative thermal expansion (NTE) below 111(4) K. The magnetic susceptibility deviates from Curie-Weiss behavior with the onset of NTE. At low temperature a broad peak in the magnetic susceptibility at 10.3(3) K is accompanied by the return of normal thermal expansion. First-principles calculations find a strong coupling between the lattice and the simulated magnetic ground state. Finally, these results indicate strong magnetoelastic coupling in LiGaCr4S8.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Technologies Division
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division; Univ. of Maryland, College Park, MD (United States). Dept. of Materials Science and Engineering; National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). NIST Center for Neutron Research
- Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy. Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division. Neutron Scattering Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation (United States)
- OSTI Identifier:
- 1435213
- Alternate Identifier(s):
- OSTI ID: 1435378
- Grant/Contract Number:
- AC05-00OR22725; AC02-06CH11357; GBMF4416
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 97; Journal Issue: 13; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; frustrated magnetism; magnetic susceptibility; magnetism; structural properties
Citation Formats
Pokharel, G., May, A. F., Parker, D. S., Calder, S., Ehlers, G., Huq, A., Kimber, S. A. J., Arachchige, H. Suriya, Poudel, L., McGuire, M. A., Mandrus, D., and Christianson, A. D. Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8. United States: N. p., 2018.
Web. doi:10.1103/PhysRevB.97.134117.
Pokharel, G., May, A. F., Parker, D. S., Calder, S., Ehlers, G., Huq, A., Kimber, S. A. J., Arachchige, H. Suriya, Poudel, L., McGuire, M. A., Mandrus, D., & Christianson, A. D. Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8. United States. https://doi.org/10.1103/PhysRevB.97.134117
Pokharel, G., May, A. F., Parker, D. S., Calder, S., Ehlers, G., Huq, A., Kimber, S. A. J., Arachchige, H. Suriya, Poudel, L., McGuire, M. A., Mandrus, D., and Christianson, A. D. Mon .
"Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8". United States. https://doi.org/10.1103/PhysRevB.97.134117. https://www.osti.gov/servlets/purl/1435213.
@article{osti_1435213,
title = {Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8},
author = {Pokharel, G. and May, A. F. and Parker, D. S. and Calder, S. and Ehlers, G. and Huq, A. and Kimber, S. A. J. and Arachchige, H. Suriya and Poudel, L. and McGuire, M. A. and Mandrus, D. and Christianson, A. D.},
abstractNote = {In this paper, the physical properties of the spinel LiGaCr4S8 have been studied with neutron diffraction, x-ray diffraction, magnetic susceptibility, and heat capacity measurements. The neutron diffraction and synchrotron x-ray diffraction data reveal negative thermal expansion (NTE) below 111(4) K. The magnetic susceptibility deviates from Curie-Weiss behavior with the onset of NTE. At low temperature a broad peak in the magnetic susceptibility at 10.3(3) K is accompanied by the return of normal thermal expansion. First-principles calculations find a strong coupling between the lattice and the simulated magnetic ground state. Finally, these results indicate strong magnetoelastic coupling in LiGaCr4S8.},
doi = {10.1103/PhysRevB.97.134117},
journal = {Physical Review B},
number = 13,
volume = 97,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2018},
month = {Mon Apr 30 00:00:00 EDT 2018}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
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