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Epitaxial BiFeO <sub>3</sub> Multiferroic Thin Film Heterostructures

Junling Wang; Jeffrey B. Neaton; Haimei Zheng; V. Nagarajan; Satishchandra Ogale; B. Liu; D. Viehland; V. Vaithyanathan · Science · 2003

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Author / responsible party
Junling Wang; Jeffrey B. Neaton; Haimei Zheng; V. Nagarajan; Satishchandra Ogale; B. Liu; D. Viehland; V. Vaithyanathan
Publisher
Science
Year
2003
Language
English

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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 is corroborated by first-principles calculations and found to originate from a high sensitivity of the polarization to small changes in lattice parameters. The films also exhibit enhanced thickness-dependent magnetism compared with the bulk. These enhanced and combined functional responses in thin film form present an opportunity to create and implement thin film devices that actively couple the magnetic and ferroelectric order parameters.

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APA 7

Wang, J, Neaton, J. B, Zheng, H, Nagarajan, V, Ogale, S, Liu, B, Viehland, D, & Vaithyanathan, V. (2003). Epitaxial BiFeO 3 Multiferroic Thin Film Heterostructures. https://doi.org/10.1126/science.1080615

MLA

Wang, Junling, et al. "Epitaxial BiFeO 3 Multiferroic Thin Film Heterostructures." 2003. https://doi.org/10.1126/science.1080615.

Chicago

Wang, Junling, Jeffrey B. Neaton, Haimei Zheng, V. Nagarajan, Satishchandra Ogale, B. Liu, D. Viehland, and V. Vaithyanathan. 2003. "Epitaxial BiFeO 3 Multiferroic Thin Film Heterostructures.". https://doi.org/10.1126/science.1080615.

Harvard

Wang, J. et al. 2003, Epitaxial BiFeO 3 Multiferroic Thin Film Heterostructures, Science, available at: https://doi.org/10.1126/science.1080615 [Accessed 7 Aug. 2026].

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Title
Epitaxial BiFeO <sub>3</sub> Multiferroic Thin Film Heterostructures
Author / contributors
Junling Wang; Jeffrey B. Neaton; Haimei Zheng; V. Nagarajan; Satishchandra Ogale; B. Liu; D. Viehland; V. Vaithyanathan
Publisher
Science
Publication year
2003
Language
English

Subjects

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Multiferroics; Ferroelectricity; Materials science; Thin film; Magnetism; Monoclinic crystal system; Polarization (electrochemistry); Condensed matter physics; Epitaxy; Heterojunction; Curie temperature; Lattice constant
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