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

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

2000-08-16

arxiv.org/abs/cond-mat/0008236v1

Physics

Condensed Matter

Materials Science

2 pages, presented at ICM2000, to appear in JMMM

Scientific paper

10.1016/S0304-8853(00)01398-6

The effect of Fe doping in the Mn site on the magnetic, transport and structural properties of polycrystalline La1/2Ca1/2MnO3 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.

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