Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/95575
Title: Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates
Authors: Woo, Chang-Su
Lee, Jin Hong
Chu, Kanghyun
Jang, Byung-Kweon
Kim, Yong-Bae
Koo, Tae Yeong
Yang, Ping
Qi, Yajun
Chen, Zuhuang
Chen, Lang
Choi, Hong Chul
Shim, Ji Hoon
Yang, Chan-Ho
Issue Date: 2012
Source: Woo, C.- S., Lee, J. H., Chu, K., Jang, B.- K., Kim, Y.- B., Koo, T. Y., et al. (2012). Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates. Physical Review B, 86(5), 054417-.
Series/Report no.: Physical review B
Abstract: Mixed-phase areas are produced in highly elongated BiFeO3 (BFO) thin films as a consequence of strain relaxation. A (001) neodymium aluminate (NdAlO3; NAO) substrate (a∼3.747 Å) prominently suppresses the strain relaxation effect and prevents the formation of mixed-phase regions. This creates a pathway to the thick, quasipure, highly elongated phases required for magnetoelectric applications. We characterize the crystal structure, the interface between film and substrate, the surface morphology, and the ferroelectric domain structure of BFO films on NAO substrates and compare them with those of films on typical lanthanum aluminate substrates. The underlying mechanisms are discussed based on the intriguing nature of phase competition in bismuth ferrite phases using first principles density functional calculations for the misfit strain-dependent total energy.
URI: https://hdl.handle.net/10356/95575
http://hdl.handle.net/10220/9361
DOI: 10.1103/PhysRevB.86.054417
Rights: © 2012 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevB.86.054417]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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