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Durham University

Department of Physics

Staff profile

Publication details for Professor Tom Lancaster

Steer, C.A., Blundell, S.J., Coldea, A.I., Marshall, I.M., Lancaster, T., Battle, P.D., Gallon, D., Fargus, A.J. & Rosseinsky, M.J. (2003). A μSR study of the spin dynamics in Ir-diluted layered manganites. Physica B condensed matter 326(1-4): 513-517.

Author(s) from Durham

Abstract

Dilution on the B-site with Ir or Rh can lead to the enhancement of ferromagnetic couplings in layered manganites. We report a μSR study of the spin dynamics of the layered manganites as a function of the dilution. We have characterized the static magnetic behavior using SQUID magnetic measurements and used muon spin relaxation spectroscopy to provide evidence for short-range ferromagnetic correlations. Furthermore, the effect of dilution on the critical dynamics in this two-dimensional spin system is reported and related to the dynamics above and below the critical percolation threshold.