Epitaxial BiFeO3 Multiferroic Thin Film Heterostructures

  title={Epitaxial BiFeO3 Multiferroic Thin Film Heterostructures},
  author={J. Wang and Jeffrey B. Neaton and Hong Zheng and Valanoor Nagarajan and Satishchandra B. Ogale and B. T. Liu and Dwight Viehland and Venugopalan Vaithyanathan and Darrell G. Schlom and Umesh V. Waghmare and Nicola A. Spaldin and K. M. Rabe and Manfred R. Wuttig and Ramamoorthy Ramesh},
  pages={1719 - 1722}
Enhancement of polarization and related properties in heteroepitaxially constrained thin films of the ferroelectromagnet, BiFeO3, is reported. Structure analysis indicates that the crystal structure of film is monoclinic in contrast to bulk, which is rhombohedral. The films display a room-temperature spontaneous polarization (50 to 60 microcoulombs per square centimeter) almost an order of magnitude higher than that of the bulk (6.1 microcoulombs per square centimeter). The observed enhancement… 

Comment on "Epitaxial BiFeO3 Multiferroic Thin Film Heterostructures"

It is argued that epitaxial strain does not enhance the magnetization and polarization in BiFeO3 and suggests the potential for novel devices that exploit the anticipated strain-mediated magnetoelectric coupling between the two ordered ground states.

Antiferroelectricity in multiferroic BiCrO3 epitaxial films

Multiferroic BiCrO3 epitaxial films were grown by pulsed laser deposition on SrTiO3 (001) substrates with SrRuO3 bottom electrodes. The authors found that the films exhibit antiferroelectricity with

Effect of epitaxial strain on ferroelectric polarization in multiferroic BiFeO3 films

Multiferroic BiFeO3 epitaxial films with thickness ranging from 40 nm to 960 nm were grown by pulsed laser deposition on SrTiO3 (001) substrates with SrRuO3 bottom electrodes. X-ray characterization

Weak ferromagnetism in La-doped BiFeO3 multiferroic thin films

Bi1−xLaxFeO3 thin films (x = 0.0, 0.3, 0.5) were grown on glass substrates by thermal physical vapor deposition. The monoclinically distorted crystal structure of the films was revealed by x-ray

Large ferroelectric polarization in antiferromagnetic BiFe0.5Cr0.5O3 epitaxial films

Multiferroic BiFe0.5Cr0.5O3 solid solution epitaxial films were grown by pulsed laser deposition on SrTiO3 (001) substrates with SrRuO3 bottom electrodes. Formation of the metastable composition in

Strain dependence of polarization and piezoelectric response in epitaxial BiFeO3 thin films

  • C. DaumontW. Ren M. Bibes
  • Materials Science
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2012
It is found that polarization and the piezoelectric coefficient increase by about 20% and 250%, respectively, in this strain range and these trends are well reproduced by first-principles-based techniques.

Ferroelectric properties and dielectric responses of multiferroic BiFeO3 films grown by RF magnetron sputtering

Multiferroic BiFeO3 films have been grown on LaNiO3−x/SrTiO3 and Pt/Si substrates by RF magnetron sputtering. The films showed fully saturated ferroelectric hysteresis loops with large remanent

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Multiferroic behavior was confirmed for epitaxial composite ferroelectric-ferromagnetic heterostructures, using a ferromagnetic crystal as both substrate and straining medium. Heterostructures having



Coexistence of ferroelectricity and ferromagnetism in BiFeO3–BaTiO3 thin films at room temperature

(Bi0.7Ba0.3) (Fe0.7Ti0.3)O3 films have been constructed on Nb-doped SrTiO3 (100) by the pulsed-laser deposition technique, and their physical properties have been examined. The films exhibit both

Single-Crystal Epitaxial Thin Films of the Isotropic Metallic Oxides Sr1-xCaxRuO3 (0 le x le 1).

These epitaxial thin films, and their multilayer structures with other oxide materials, can be used for the fabrication of superconducting, ferroelectric, magneto-optic, and electro-optics devices.


We present results of local spin density approximation (LSDA) pseudopotential calculations for the perovskite structure oxide, bismuth manganite (BiMnO3). The origin of the differences between

Effect of mechanical boundary conditions on phase diagrams of epitaxial ferroelectric thin films

A phenomenological thermodynamic theory of ferroelectric thin films epitaxially grow on cubic substrates is developed using a new form of the thermodynamic potential. which corresponds to the ac tual

Giant LO-TO splittings in perovskite ferroelectrics.

Anomalously large dynamical effective charges give rise to very strong mixing of the mode eigenvectors on going from the TO to the LO case, resulting in a ``giant LO-TO splitting'' in the sense that the soft TO mode is most closely related to the hardest LO modes.

Visualizing the Role of Bi 6s “Lone Pairs” in the Off-Center Distortion in Ferromagnetic BiMnO3

Results of first-principles electronic structure calculations on the low-temperature monoclinic phase of the ferromagnetic perovskite BiMnO3 [Atou et al. J. Solid State Chem. 1999, 145, 639] are

Observation of coupled magnetic and electric domains

Spatial maps of coupled antiferromagnetic and ferroelectric domains in YMnO3 are obtained by imaging with optical second harmonic generation and lead to a configuration that is dominated by the ferroelectromagnetic product of the order parameters.

Structure of a ferroelectric and ferroelastic monodomain crystal of the perovskite BiFeO3

A ferroelec. and ferroelastic monodomain single crystal of BiFeO3 at space group R3c is rhombohedral, with a 5.57874(16), c 13.8688(3) .ANG.; arh 5.6343 .ANG., arh 59.348 Deg; d. (calcd.) = 8.337 for