Realization of biferroic properties in La0.6Sr0.4MnO3 0.7Pb(Mg0.33Nb0.67)O3 0.3(PbTiO3) epitaxial superlattices

Abstract

A set of symmetric and asymmetric superlattices with ferromagnetic La0.6Sr0.4MnO3 and ferroelectric 0.7Pb(Mg0.33Nb0.67)O3 0.3(PbTiO3) as the constituting layers were fabricated on LaNiO3 coated (100) oriented LaAlO3 substrates using pulsed laser ablation. The crystallinity, magnetic and ferroelectric properties were studied for all the superlattices. All the superlattice structures exhibited a ferromagnetic behavior over a wide range of temperatures between 10K and 300K, whereas only the asymmetric superlattices exhibited a reasonably good ferroelectric behaviour. Strong influence of an applied magnetic field was observed on the ferroelectric properties of the asymmetric superlattices. Studies were conducted towards understanding the influence of conducting LSMO layers on the electrical responses of the heterostructures. The absence of ferroelectricity in the symmetric superlattice structures has been attributed to their high leakage characteristics. The effect of an applied magnetic field on the ferroelectric properties of the asymmetric superlattices indicated strong influence of the interfaces on the properties. The dominance of the interface on the dielectric response was confirmed by the observed Maxwell Wagner type dielectric relaxation in these heterostructures.

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References in corpus (11)

• Physics of thin-film ferroelectric oxides
• Magnetodielectric effect without multiferroic coupling
• Towards ferroelectrically-controlled magnetism: Magnetoelectric effect in Fe/BaTiO3 multilayers
• Theory of polarization enhancement in epitaxial BaTiO${}_3$/SrTiO${}_3$ superlattices
• Surface electronic Structure and magnetic properties of doped manganites
• Magnetocapacitance effect in perovskite-superlattice based multiferroics
• Strain effect on electronic transport and ferromagnetic transition temperature in La${}_{0.9}$Sr${}_{0.1}$MnO${}_3$ thin films
• Ferroelectric and anti-ferroelectric coupling in superlattices of paraelectric perovskites at room temperature
• The role of ferroelectric-ferromagnetic layers on the properties of superlattice-based multiferroics
• Tailoring of ferromagnetic Pr0.85Ca0.15MnO3/ferroelectric Ba0.6Sr0.4TiO3 superlattices for multiferroic properties
• Effect of ferroelectric layers on the magnetocapacitance properties of superlattices-based oxide multiferroics

Cited by in corpus (2)

• Investigation of biferroic properties in La0.6Sr0.4MnO3/0.7 Pb(Mg1/3Nb2/3)O3 0.3 PbTiO3 epitaxial bilayered heterostructures
• Magnetocapacitive La0.6Sr0.4MnO3 0.7Pb(Mg0.33Nb0.67)O3 0.3PbTiO3 epitaxial heterostructures