119Sn NMR probe of magnetic fluctuations in SnO2 nanoparticles Tusharkanti Dey, P. Khuntia, A. V. Mahajan, Nitesh Kumar and A. Sundaresan EPL, 96 6 (2011) 67008 Published online: 07 December 2011 DOI: 10.1209/0295-5075/96/67008