Study of Magnetic Fredericksz Transition in Ferronematics. Liquid Crystals Doped with Fine Magnetic Particles P. Kopcansky, M. Koneracka, V. Zavisova, J. Jadzyn, G. Czechowski et B. Zywucki J. Phys. IV France, 07 C1 (1997) C1-565-C1-566 DOI: 10.1051/jp4:19971234