Magnetic properties of synthetic Ni3Si2O5(OH)4 nanotubes Andrei A. Krasilin, Anna S. Semenova, Dina G. Kellerman, Vladimir N. Nevedomsky and Victor V. Gusarov EPL, 113 4 (2016) 47006 Published online: 14 March 2016 DOI: 10.1209/0295-5075/113/47006