Origin of cluster spin glass and nuclear Schottky anomaly in Mn50Ni38.5Sn11.5 alloyMayukh K. Ray, K. Bagani, P. K. Mukhopadhyay and S. BanerjeeEPL, 109 4 (2015) 47006DOI: https://doi.org/10.1209/0295-5075/109/47006