Observation of spin glass behavior in Ba0.8La0.2Ti0.8Co0.2O3 D.F. Shao, J. Yang, X.B. Zhu, J.M. Dai, Z.R. Yang, W.H. Song and Y.P. Sun Eur. Phys. J. B, 85 5 (2012) 156 Published online: 16 May 2012 DOI: 10.1140/epjb/e2012-20912-x