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Long-range antiferromagnetic order of the Cu in oxygen-deficient RBa/sub 2/Cu/sub 3/O/sub 6/. mu. /sub x/

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
We have employed polarized and unpolarized neutron-diffraction techniques on both powders and single crystals to establish the nature of the magnetic order of the Cu ions in oxygen deficient (non-superconducting) RBa/sub 2/Cu/sub 3/O/sub 6/..mu../sub x/ (R = Y, Nd). Magnetic Bragg peaks of the type (h2,k2,l) are observed, which yield a magnetic structure in which the Cu spins are coupled antiferromagnetically both in the Cu-O planes as well as along the tetragonal c axis, with the spin direction in the tetragonal plane. The Neel temperature is very sensitive to the oxygen content, with T/sub N//sub (//sub x//sub approx.//sub 0)/approx. =500 K, while the spin configuraton is independent of x.
Research Organization:
Department of Physics, University of Maryland, College Park, Maryland 20742
OSTI ID:
7150478
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:16; ISSN PRBMD
Country of Publication:
United States
Language:
English