Anomalous dielectric behavior in nanoparticle Eu2O3:SiO2 glass composite system S. Mukherjee, C. H. Chen, C. C. Chou and H. D. Yang EPL, 92 5 (2010) 57010 Published online: 22 December 2010 DOI: 10.1209/0295-5075/92/57010