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Static magnetic order in Bi/sub 2/Sr/sub 2/YCu/sub 2/O/sub x/ and spin freezing in Bi/sub 2/SrYCaCu/sub 2/O/sub x/ detected by muon-spin rotation

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
Muon-spin rotation measurements have been performed on insulating samples of Y-doped Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/. In Bi/sub 2/Sr/sub 2/YCu/sub 2/O/sub x/ muon-spin precession frequencies have been observed in zero applied field which are attributed to antiferromagnetic ordering, probably in the CuO/sub 2/ planes. The transition is broad with an ordering temperature of about 210 K. Bi/sub 2/SrYCaCu/sub 2/O/sub x/ appears to be a disordered magnetic system with a spin-freezing temperature of 15 K. These results establish that there are strong magnetic correlations in the Bi 2:2:1:2 phase which are analogous to those observed previously in La/sub 2-//sub x/Sr/sub x/CuO/sub 4/ and YBa/sub 2/Cu/sub 3/O/sub x/.
Research Organization:
TRIUMF and Department of Physics, University of British Columbia, Vancouver, Canada V6T2A3
OSTI ID:
6757265
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:1; ISSN PRBMD
Country of Publication:
United States
Language:
English