Electric and magnetic properties of PMMA/manganite composites

C. ARTALE, S.FERMEPIN, M.FORTI, M.LATINO, M. QUINTERO, L. GRANJA, J. SACANELL, G.POLLA AND P.LEVY

PHYSICA B - CONDENSED MATTER

Elsevier / Proceedings FMC2008

Lugar: Proceedings FMC2008; Año: 2009 vol. 404 p. 2760 - 2762

0921-4526

We present the synthesis and characterization of the La2/3Sr1/3MnO3 manganite in the form of tapes using polymethyl methacrylate (PMMA) as binder. We have studied their electric and magnetic properties as a function of temperature and magnetic .eld. The magnetization results have been shown to be dominated by the intrinsic magnetic properties of the manganite. Resistivity measurements showed an insulating behavior in the whole range of temperatures measured, indicating that the percolation threshold of manganite grains has not been reached even for the sample with 35% of PMMArelative content. The obtained magnetoresistance is largest in the sample with 35% of PMMA relative content.& 2009 Elsevier B.V. All rights reserved.Keywords: Metal–insulator composites Manganites CMR Magnetic properties