Effects of Fe doping in La1/2Ca1/2MnO3

P. LEVY; L. GRANJA; E. INDELICATO; D. VEGA; G. POLLA; F. PARISI

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

Año: 2001 vol. 226 p. 794 - 796

0304-8853

The effect of Fe doping in the Mn site on the magnetic, transport and structural properties of polycrystalline La(0.5)Ca(0.5)MnO(3) was studied. Doping with low Fe concentration (<10%)strongly affects electrical transport and magnetization. Long range charge order is disrupted even for the lowest doping level studied (~2%). For Fe concentration up to 5% a ferromagnetic state develops at low temperature with metallic-like conduction and thermal hysteresis. In this range, the Curie temperature decreases monotonously as a function of Fe doping. Insulating behavior and a sudden depression of the ferromagnetic state is observed by further Fe doping.