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Title: Magnetic structure of the quasi-one-dimensional L a 3 Os O 7 as determined by neutron powder diffraction

Insulating 5d 3 La 3OsO 7 and the isostructural hole-doped analog La 2.8Ca 0.2OsO 7 that feature pseudo-one-dimensional zigzag chains of corner-sharing OsO 6 octahedra were synthesized and their magnetic and electrical transport properties characterized. Both of these compounds are insulating antiferromagnets. Moreover, for long range magnetic order between the antiferromagnetic chains we determined with a propagation vector k = 1/2,1/2,1 and T N = 45 and 33 K the parent and doped materials. An Os 5+ moment of 1.7(1)μ B for La 3OsO 7 and 1.2(2)μ B for La 2.8Ca 0.2OsO 7 is refined. The long range magnetic structure is compared to the isostructural compounds La 3RuO 7 and La 3MoO 7, both of which adopt different magnetic structures.
Authors:
 [1] ;  [2] ;  [1] ;  [1]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. The Ohio State Univ., Columbus, OH (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; FG02-95ER40900
Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 13; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
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)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1295129
Alternate Identifier(s):
OSTI ID: 1222856