Comment on "Epitaxial BiFeO3 multiferroic thin film heterostructures".
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TLDR
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.Abstract:
Wang et al recently reported multiferroic behavior, with ferromagnetic and ferroelectric polarizations that are both large at room temperature, in thin strained films of BiFeO3 (BFO). Although at room temperature, bulk BFO is ferroelectric and anti-ferromagnetic , Wang et al. reported that a 70-nm film shows both an enhanced ferroelectric polarization (90 μC cm–2) and a substantial magnetization (1 μB/Fe). This remains the only report of a robust room-temperature multiferroic and suggests the potential for novel devices that exploit the anticipated strain-mediated magnetoelectric coupling between the two ordered ground states. In this Comment, we argue that epitaxial strain does not enhance the magnetization and polarization in BiFeO3read more
Citations
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Multiferroic and magnetoelectric materials
TL;DR: A ferroelectric crystal exhibits a stable and switchable electrical polarization that is manifested in the form of cooperative atomic displacements that arises through the quantum mechanical phenomenon of exchange.
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Physics and Applications of Bismuth Ferrite
Gustau Catalan,James F. Scott +1 more
TL;DR: In this paper, the authors summarize both the basic physics and unresolved aspects of BiFeO3 and device applications, which center on spintronics and memory devices that can be addressed both electrically and magnetically.
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Ferroelectric thin films: Review of materials, properties, and applications
Nava Setter,Dragan Damjanovic,L. Eng,Glen R. Fox,Spartak Gevorgian,Seungbum Hong,Angus I. Kingon,Hermann Kohlstedt,N. Y. Park,G. B. Stephenson,I. Stolitchnov,A. K. Taganstev,D. V. Taylor,Tomoaki Yamada,Stephen K. Streiffer +14 more
TL;DR: An overview of the state of the art in ferroelectric thin films is presented in this paper, where the authors review applications: micro-systems' applications, applications in high frequency electronics, and memories based on Ferroelectric materials.
Journal ArticleDOI
Size-Dependent Magnetic Properties of Single-Crystalline Multiferroic BiFeO3 Nanoparticles
Tae-Jin Park,Georgia C. Papaefthymiou,Arthur J. Viescas,and Arnold R. Moodenbaugh,Stanislaus S. Wong +4 more
TL;DR: As-prepared, single-crystalline bismuth ferrite nanoparticles show strong size-dependent magnetic properties that correlate with increased suppression of the known spiral spin structure with decreasing nanoparticle size and uncompensated spins and strain anisotropies at the surface.
Journal ArticleDOI
Visible-Light Photocatalytic Properties of Weak Magnetic BiFeO3 Nanoparticles
Feng Gao,Xinyi Chen,Kuibo Yin,Shuai Dong,Zhifeng Ren,Fang Yuan,Tao Yu,Zhigang Zou,Jun-Ming Liu,Jun-Ming Liu +9 more
TL;DR: Polycrystalline BiFeO3 nanoparticles (size 80-120 nm) are prepared by a simple sol-gel technique as discussed by the authors, which are very efficient for photocatalytic decomposition of organic contaminants under irradiation from ultraviolet to visible frequencies.
References
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Journal ArticleDOI
Epitaxial BiFeO3 multiferroic thin film heterostructures.
Jian Wang,Jeffrey B. Neaton,Haimei Zheng,Valanoor Nagarajan,Satishchandra Ogale,B. T. Liu,Dwight Viehland,V. Vaithyanathan,Darrell G. Schlom,Umesh V. Waghmare,Nicola A. Spaldin,Karin M. Rabe,Manfred Wuttig,Ramamoorthy Ramesh +13 more
TL;DR: Enhanced polarization and related properties in heteroepitaxially constrained thin films of the ferroelectromagnet, BiFeO3, 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.
Journal ArticleDOI
Spiral magnetic ordering in bismuth ferrite
TL;DR: In this article, the magnetic ordering of the iron ions in bismuth ferrite BiFeO3 was obtained by a study with a high-resolution time-of-flight neutron diffractometer.
Journal ArticleDOI
Weak ferromagnetism and magnetoelectric coupling in bismuth ferrite
Claude Ederer,Nicola A. Spaldin +1 more
TL;DR: In this paper, the coupling between the ferroelectric and magnetic order parameters in the magnetoelectric multiferroic was analyzed using density functional theory within the local spin density approximation (LSDA) and the $\mathrm{LSDA}+\mathm{U}$ method.
Journal ArticleDOI
First-principles study of spontaneous polarization in multiferroic Bi Fe O 3
TL;DR: In this paper, the ground-state structural and electronic properties of ferroelectric are calculated using density functional theory within the local spin-density approximation (LSDA) and the $\mathrm{LSDA}+U$ method.
Journal ArticleDOI
Dielectric hysteresis in single crystal BiFeO3
TL;DR: In this paper, single crystals of BiFeO3 of perovskite structure were grown with dimensions of greater than 1 mm from a Bi2O3 flux and dielectric hysteresis loops were measured on these crystals.