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Title: Type I antiferromagnetic order in Ba2LuReO6: Exploring the role of structural distortions in double perovskites containing 5d2 ions

Journal Article · · Journal of Solid State Chemistry
 [1];  [2];  [3];  [1]
  1. The Ohio State Univ., Columbus, OH (United States). Dept. of Chemistry and Biochemistry
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division

The structural, electrical, and magnetic properties of the double perovskite Ba2LuReO6 have been examined in this paper. It is an insulator whose temperature dependent conductivity is consistent with variable range hopping electrical transport. A transition to an antiferromagnet state with type I order occurs below TN = 31 K. High resolution time-of-flight neutron powder diffraction measurements show that it retains the cubic double perovskite structure down to 10 K. High intensity, low resolution neutron powder diffraction measurements confirm the antiferromagnetic order and indicate that cubic symmetry is still observed at 1.5 K. The small ordered moment of 0.34(4)μB per Re is comparable to estimates of moments on 5d2 ions in other antiferromagnetically ordered cubic double perovskites. Finally, comparisons with related double perovskites containing 5d2 ions, such as Os6+ and Re5+, reveal that subtle changes in structure or electron configuration of the diamagnetic octahedral cations can have a large impact on the magnetic ground state, the size of the ordered moment, and the Néel temperature.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; AC02-06CH11357; DMR-1420451
OSTI ID:
1423055
Alternate ID(s):
OSTI ID: 1505861
Journal Information:
Journal of Solid State Chemistry, Vol. 258; ISSN 0022-4596
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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