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Title: Physical properties of the trigonal binary compound Nd 2 O 3

Abstract

In this paper, we have studied the physical properties of Nd 2O 3 with neutron diffraction, inelastic neutron scattering, heat-capacity, and magnetic susceptibility measurements. Nd 2O 3 crystallizes in a trigonal structure with Nd 3+ ions surrounded by cages of seven oxygen anions. The crystal-field spectrum consists of four excitations spanning the energy range of 3–60 meV. The refined eigenfunctions indicate XY spins in the ab plane. The Curie-Weiss temperature of θ CW = –23.7 (1) K was determined from magnetic susceptibility measurements. Heat capacity measurements show a sharp peak at 550 mK and a broader feature centered near 1.5 K. Neutron diffraction measurements show that the 550 mK transition corresponds to long-range antiferromagnetic order implying a frustration index of θ CW/ TN ≈ 43. These results indicate that Nd 2O 3 is a structurally and chemically simple model system for frustration caused by competing interactions with moments with predominant XY anisotropy.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1484117
Alternate Identifier(s):
OSTI ID: 1483030
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Materials
Additional Journal Information:
Journal Volume: 2; Journal Issue: 11; Journal ID: ISSN 2475-9953
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Sala, Gabriele, Stone, Matthew B., Rai, Binod K., May, Andrew F., Dela Cruz, Clarina R., Suriya- Arachchige, Hasitha W., Ehlers, Georg, Fanelli, Victor R., Garlea, Vasile O., Lumsden, Mark D., Mandrus, David, and Christianson, Andrew D. Physical properties of the trigonal binary compound Nd2O3. United States: N. p., 2018. Web. doi:10.1103/PhysRevMaterials.2.114407.
Sala, Gabriele, Stone, Matthew B., Rai, Binod K., May, Andrew F., Dela Cruz, Clarina R., Suriya- Arachchige, Hasitha W., Ehlers, Georg, Fanelli, Victor R., Garlea, Vasile O., Lumsden, Mark D., Mandrus, David, & Christianson, Andrew D. Physical properties of the trigonal binary compound Nd2O3. United States. doi:10.1103/PhysRevMaterials.2.114407.
Sala, Gabriele, Stone, Matthew B., Rai, Binod K., May, Andrew F., Dela Cruz, Clarina R., Suriya- Arachchige, Hasitha W., Ehlers, Georg, Fanelli, Victor R., Garlea, Vasile O., Lumsden, Mark D., Mandrus, David, and Christianson, Andrew D. Wed . "Physical properties of the trigonal binary compound Nd2O3". United States. doi:10.1103/PhysRevMaterials.2.114407.
@article{osti_1484117,
title = {Physical properties of the trigonal binary compound Nd2O3},
author = {Sala, Gabriele and Stone, Matthew B. and Rai, Binod K. and May, Andrew F. and Dela Cruz, Clarina R. and Suriya- Arachchige, Hasitha W. and Ehlers, Georg and Fanelli, Victor R. and Garlea, Vasile O. and Lumsden, Mark D. and Mandrus, David and Christianson, Andrew D.},
abstractNote = {In this paper, we have studied the physical properties of Nd2O3 with neutron diffraction, inelastic neutron scattering, heat-capacity, and magnetic susceptibility measurements. Nd2O3 crystallizes in a trigonal structure with Nd3+ ions surrounded by cages of seven oxygen anions. The crystal-field spectrum consists of four excitations spanning the energy range of 3–60 meV. The refined eigenfunctions indicate XY spins in the ab plane. The Curie-Weiss temperature of θCW = –23.7 (1) K was determined from magnetic susceptibility measurements. Heat capacity measurements show a sharp peak at 550 mK and a broader feature centered near 1.5 K. Neutron diffraction measurements show that the 550 mK transition corresponds to long-range antiferromagnetic order implying a frustration index of θCW/TN ≈ 43. These results indicate that Nd2O3 is a structurally and chemically simple model system for frustration caused by competing interactions with moments with predominant XY anisotropy.},
doi = {10.1103/PhysRevMaterials.2.114407},
journal = {Physical Review Materials},
number = 11,
volume = 2,
place = {United States},
year = {Wed Nov 21 00:00:00 EST 2018},
month = {Wed Nov 21 00:00:00 EST 2018}
}

Journal Article:
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