Surface agglomeration is beneficial for release of magnetic property via research of rare earth (RE) element-substitution

Surface agglomeration is beneficial for release of magnetic property via research of rare earth... Article history: BiFeO (BFO) thin films and Rare-Earth (RE) element substitutions were successfully fabricated on silicon Received 30 March 2017 substrates by sol–gel technology. Multiferroic properties of BFO had been improved considerably on RE Received in revised form 15 July 2017 (La, Ho, Er)-substitution at Bi site. The RE-substitution principle was presented in Fig. 1(the simulative Accepted 10 August 2017 images of ions matching). The single phase and the perovskite based rhombohedral structure with R3c Available online 18 August 2017 space group of BFO and RE-substitution films were confirmed through the full pattern fitting of surface and section XRD profiles. There were obvious agglomeration phenomena for RE-substitution films via Keywords: FESEM patterns, and the AFM images shown that the RE-substation films possessed smoother surface BiFeO texture comparing with the BFO. The RE-substitution films showed higher saturation magnetization (Ms) Substitution and remanent magnetization (Mr) due to the reduced concentration of defects (oxygen vacancy), RE ions Magnetic materials 3+ 2− with smaller radii size (size effect) and surface structure of compactness. Fe and O ions play an Perovskite structure essential role in superexchange interaction, the XPS, surface and vertical EDS images revealed increasing 3+ 2− tendency of Fe ions and O http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Surface agglomeration is beneficial for release of magnetic property via research of rare earth (RE) element-substitution

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2017.08.083
Publisher site
See Article on Publisher Site

Abstract

Article history: BiFeO (BFO) thin films and Rare-Earth (RE) element substitutions were successfully fabricated on silicon Received 30 March 2017 substrates by sol–gel technology. Multiferroic properties of BFO had been improved considerably on RE Received in revised form 15 July 2017 (La, Ho, Er)-substitution at Bi site. The RE-substitution principle was presented in Fig. 1(the simulative Accepted 10 August 2017 images of ions matching). The single phase and the perovskite based rhombohedral structure with R3c Available online 18 August 2017 space group of BFO and RE-substitution films were confirmed through the full pattern fitting of surface and section XRD profiles. There were obvious agglomeration phenomena for RE-substitution films via Keywords: FESEM patterns, and the AFM images shown that the RE-substation films possessed smoother surface BiFeO texture comparing with the BFO. The RE-substitution films showed higher saturation magnetization (Ms) Substitution and remanent magnetization (Mr) due to the reduced concentration of defects (oxygen vacancy), RE ions Magnetic materials 3+ 2− with smaller radii size (size effect) and surface structure of compactness. Fe and O ions play an Perovskite structure essential role in superexchange interaction, the XPS, surface and vertical EDS images revealed increasing 3+ 2− tendency of Fe ions and O

Journal

Applied Surface ScienceElsevier

Published: Jan 1, 2018

References

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