Phys. Rev. B 56, 7886–7889 (1997)Local magnetic order in superconducting YBa2(Cu1-xMx)3O7 (M=Co,Fe)Received 3 June 1997; published in the issue dated 1 October 1997 We have examined the local magnetic order which is introduced into YBa2Cu3O7 by substituting low levels (1–4 %) of Co or Fe. The order is evidenced through the appearance of an internal field on the spin of 170Yb3+ Mössbauer probes diluted at the Y3+ sites. Low substitution levels only marginally influence the superconducting properties, yet introduce local magnetic order over the whole sample volume. The local order concerns the Cu sublattices and fluctuates with rates that depend on the substituted ion, its concentration, and the temperature. © 1997 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.56.7886
DOI:
10.1103/PhysRevB.56.7886
PACS:
74.25.Ha, 74.72.Bk, 76.80.+y
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