Physics – Condensed Matter – Materials Science
Scientific paper
2004-09-08
Appl. Phys. Lett. 85 (2004) 4424
Physics
Condensed Matter
Materials Science
To be published in App. Phys. Lett
Scientific paper
10.1063/1.1811800
Superlattices composed of ferromagnetic Pr0.85Ca0.15MnO3 and ferroelectric Ba0.6Sr0.4TiO3 layers were fabricated on (100) SrTiO3 substrates by a pulsed-laser deposition method. The capacitance and resistive parts of the samples were analyzed from the complex impedance measurements, performed on the samples using a special experimental set-up. The superlattice with larger ferroelectric thickness shows unique characteristics which are not present in the parent ferromagnetic thin film. The superlattice show both ferromagnetic and ferroelectric transitions which is an evidence for the coexistence of both the properties. The high magnetoresistance (40 % at 80K) shown by the superlattice can be attributed to the coupling between ferromagnetic and ferroelectric layers, i.e, to the magnetoelectric effect.
Murugavel Pattukkannu
Prellier Wilfrid
Raveau Bernard
Saurel Damien
Simon Ch.
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