Magnetization steps in phase separated La1/2Ca1/2Mn1-yFeyO3

L.GRANJA; ...; PABLO EDUARDO LEVY

S.C.de Bariloche-CAB, Argentina.

Conferencia; PUSHING PHYSICS AT LOW TEMPERATURES: To celebrate the scientific trajectory of Prof. FRANCISCO DE LA CRUZ; 2004

Journal of Low Temperature Physics, 135,111 (2004) Magnetization steps in phase separated La1/2Ca1/2Mn1-yFeyO3 L. Granja, R.S. Freitas, L. Ghivelder, G.Polla, F. Parisi and P. LevyL. Granja, R.S. Freitas, L. Ghivelder, G.Polla, F. Parisi and P. Levy We report a low temperature magnetic study on the phase separated La0.5Ca0.5Mn1-yFeyO3 (0.02£y£0.06) polycrystalline manganites. Several abrupt and sizeable magnetization steps are observed in the M(H) curves of all samples at 2 K, which are associated to avalanche-like growth of the ferromagnetic phase. This work contributes to confirm that this feature is inherent to phase separated manganites, and is not restricted to particular compounds or kinds of doping. © 2001 Elsevier Science. All rights reserved