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Department of Physics

Staff profile

Publication details for Professor Stewart Clark

Williams, R.C., Xiao, F., Thomas, I.O., Clark, S.J., Lancaster, T., Cornish, G. A., Blundell, S.J., Hayes, W., Paul, A. K., Felser, C. & Jansen, M. (2016). Muon-spin relaxation study of the double perovskite insulators Sr2 BOsO6 (B  =  Fe, Y, ln). Journal of Physics: Condensed Matter 28(7): 076001.

Author(s) from Durham

Abstract

We present the results of zero-field muon-spin relaxation measurements made on the
double perovskite insulators Sr2BOsO6 (B = Fe, Y, In). Spontaneous muon-spin precession
indicative of quasistatic long range magnetic ordering is observed in Sr2FeOsO6 within the
AF1 antiferromagnetic phase for temperatures below TN = ± 135 2 K. Upon cooling below
T2 ≈ 67 K the oscillations cease to be resolvable owing to the coexistence of the AF1 and AF2
phases, which leads to a broader range of internal magnetic fields. Using density functional
calculations we identify a candidate muon stopping site within the unit cell, which dipole field
simulations show to be consistent with the proposed magnetic structure. The possibility of
incommensurate magnetic ordering is discussed for temperatures below TN = 53 K and 25 K
for Sr2YOsO6 and Sr2InOsO6, respectively.