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Kim DH, Sun X, Kim TC, et al. Magnetic Phase Formation in Self-Assembled Epitaxial BiFeO3-MgO and BiFeO3-MgAl2O4 Nanocomposite Films Grown by Combinatorial Pulsed Laser Deposition. ACS Appl Mater Interfaces. 2016;8(4):2673-9doi: 10.1021/acsami.5b10676.
Kim, D. H., Sun, X., Kim, T. C., Eun, Y. J., Lee, T., Jeong, S. G., & Ross, C. A. (2016). Magnetic Phase Formation in Self-Assembled Epitaxial BiFeO3-MgO and BiFeO3-MgAl2O4 Nanocomposite Films Grown by Combinatorial Pulsed Laser Deposition. ACS applied materials & interfaces, 8(4), 2673-9. https://doi.org/10.1021/acsami.5b10676
Kim, Dong Hun, et al. "Magnetic Phase Formation in Self-Assembled Epitaxial BiFeO3-MgO and BiFeO3-MgAl2O4 Nanocomposite Films Grown by Combinatorial Pulsed Laser Deposition." ACS applied materials & interfaces vol. 8,4 (2016): 2673-9. doi: https://doi.org/10.1021/acsami.5b10676
Kim DH, Sun X, Kim TC, Eun YJ, Lee T, Jeong SG, Ross CA. Magnetic Phase Formation in Self-Assembled Epitaxial BiFeO3-MgO and BiFeO3-MgAl2O4 Nanocomposite Films Grown by Combinatorial Pulsed Laser Deposition. ACS Appl Mater Interfaces. 2016 Feb 03;8(4):2673-9. doi: 10.1021/acsami.5b10676. Epub 2016 Jan 21. PMID: 26750565.
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ACS Appl Mater Interfaces. 2016 Feb 03;8(4):2673-9. doi: 10.1021/acsami.5b10676. Epub 2016 Jan 21.

Magnetic Phase Formation in Self-Assembled Epitaxial BiFeO3-MgO and BiFeO3-MgAl2O4 Nanocomposite Films Grown by Combinatorial Pulsed Laser Deposition.

ACS applied materials & interfaces

Dong Hun Kim, XueYin Sun, Tae Cheol Kim, Yun Jae Eun, Taeho Lee, Sung Gyun Jeong, Caroline A Ross

Affiliations

  1. Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
  2. Department of Materials Science and Engineering, Myongji University , Yongin 120-728, Republic of Korea.
  3. School of Materials Science and Engineering, Harbin Institute of Technology , Harbin 150001, People's Republic of China.

PMID: 26750565 DOI: 10.1021/acsami.5b10676

Abstract

Self-assembled epitaxial BiFeO3-MgO and BiFeO3-MgAl2O4 nanocomposite thin films were grown on SrTiO3 substrates by pulsed laser deposition. A two-phase columnar structure was observed for BiFeO3-MgO codeposition within a small window of growth parameters, in which the pillars consisted of a magnetic spinel phase (Mg,Fe)3O4 within a BiFeO3 matrix, similar to the growth of BiFeO3-MgFe2O4 nanocomposites reported elsewhere. Further, growth of a nanocomposite with BiFeO3-(CoFe2O4/MgO/MgFe2O4), in which the minority phase was grown from three different targets, gave spinel pillars with a uniform (Mg,Fe,Co)3O4 composition due to interdiffusion during growth, with a bifurcated shape from the merger of neighboring pillars. BiFeO3-MgAl2O4 did not form a well-defined vertical nanocomposite in spite of having lower lattice mismatch, but instead formed a two-phase film with in which the spinel phase contained Fe. These results illustrate the redistribution of Fe between the oxide phases during oxide codeposition to form a ferrimagnetic phase from antiferromagnetic or nonmagnetic targets.

Keywords: BiFeO3; combinatorial pulsed laser deposition; epitaxy; multiferroic; perovskite; self-assembled oxide nanocomposite; spinel; thin film oxide

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