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Compositional tuning of the strain-induced structural phase transition and of ferromagnetism in Bi1− xBa xFeO3− δ
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Bennett, Charlee J. C., Kim, Hyunsik, Varela, Maria, Biegalski, Michael D., Kim, Dae Ho, Norton, David P., Meyer, Harry M. and Christen, Hans M. (2011) Compositional tuning of the strain-induced structural phase transition and of ferromagnetism in Bi1− xBa xFeO3− δ. Journal of Materials Research, Vol.26 (No.10). pp. 1326-1331. doi:10.1557/jmr.2011.59
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Official URL: http://dx.doi.org/10.1557/jmr.2011.59
Abstract
Recent studies by a number of research groups have shown that the structure of epitaxial BiFeO(3) (BFO) films changes drastically as a function of substrate-induced biaxial compression, with the crystal structure changing from one being nearly rhombohedral (R-like) to one being nearly tetragonal (T-like), where the "T-like" structure is characterized by a highly enhanced c/a ratio of out-of-plane c to in-plane a lattice parameters. In this work, we show that the critical compressive strain sigma(c) necessary to induce this transition can be reduced significantly by substituting 10% Ba for Bi [Bi(0.9)Ba(0.1)FeO(3-delta) (BBFO)] and that the "T-like" phase in both BBFO and BFO is stable up to the decomposition temperatures of the films in air. Furthermore, our results show that the BBFO solid solution shows clear ferromagnetic properties in contrast to its undoped BFO counterpart.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science > Physics | ||||
| Journal or Publication Title: | Journal of Materials Research | ||||
| Publisher: | Cambridge University Press | ||||
| ISSN: | 0884-2914 | ||||
| Official Date: | May 2011 | ||||
| Dates: |
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| Volume: | Vol.26 | ||||
| Number: | No.10 | ||||
| Page Range: | pp. 1326-1331 | ||||
| DOI: | 10.1557/jmr.2011.59 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Funder: | U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division , United States. Army Research Office (ARO), National Science Foundation (U.S.) (NSF), United States. Dept. of Energy (DOE) | ||||
| Grant number: | 0704240 (NSF) |
Data sourced from Thomson Reuters' Web of Knowledge
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