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Reduction of Ordered Moment and N{acute e}el Temperature of Quasi-One-Dimensional Antiferromagnets Sr{sub 2}CuO{sub 3} and Ca{sub 2}CuO{sub 3}

Journal Article · · Physical Review Letters
; ; ; ; ; ;  [1]; ; ;  [2]; ;  [3];  [4]; ;  [5]
  1. Department of Physics, Columbia University, New York, New York 10027 (United States)
  2. Department of Applied Physics, University of Tokyo, Tokyo 113 (Japan)
  3. Department of Physics, Tohoku University, Sendai 980-77 (Japan)
  4. Institute of Inorganic Synthesis, Yamanashi University, Kofu 400 (Japan)
  5. Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
+ Show Author Affiliations
We report elastic neutron diffraction and muon spin relaxation ({mu}SR) measurements of the quasi-one-dimensional antiferromagnets Sr{sub 2}CuO{sub 3} and Ca{sub 2}CuO{sub 3}, which have extraordinarily reduced T{sub N}/J ratios. We observe almost resolution-limited antiferromagnetic Bragg reflections in Sr{sub 2}CuO{sub 3} and obtain a reduced ordered moment size of {approximately}0.06{mu}{sub B}. We find that the ratio of ordered moment size {mu}(Ca{sub 2}CuO{sub 3})/{mu}(Sr{sub 2}CuO{sub 3})=1.5(1) roughly scales with their N{acute e}el temperatures, which suggests that the ordered moment size of quasi-one-dimensional antiferromagnets decreases continuously in the limit of vanishing interchain interactions. {copyright} {ital 1997} {ital The American Physical Society}
Research Organization:
Brookhaven National Laboratory
DOE Contract Number:
AC02-76CH00016
OSTI ID:
467460
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ANTIFERROMAGNETISM
CALCIUM OXIDES
COPPER OXIDES
CRYSTAL STRUCTURE
MAGNETIC MOMENTS
MUON SPIN RELAXATION
NEEL TEMPERATURE
NEUTRON DIFFRACTION
STRONTIUM OXIDES