Successive spin glass, cluster ferromagnetic, and superparamagnetic transitions in RuSr2Y1.5Ce0.5Cu2O10 complex magneto-superconductorA. Kumar, R.P. Tandon and V.P.S. AwanaEur. Phys. J. B, 85 7 (2012) 238DOI: https://doi.org/10.1140/epjb/e2012-30075-5