Hidden transition in multiferroic and magnetodielectric CuCrO2 evidenced by ac-susceptibility Kaushak K. Shukla, Arkadeb Pal, Abhishek Singh, Rahul Singh, J. Saha, A. K. Sinha, A. K. Ghosh, S. Patnaik, A. M. Awasthi and Sandip Chatterjee EPL, 118 2 (2017) 27008 Published online: 23 June 2017 DOI: 10.1209/0295-5075/118/27008