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Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length

[Image: see text] In this work, heteroepitaxial vertically aligned nanocomposite (VAN) La(0.9)Ba(0.1)MnO(3) (LBMO)-CeO(2) films are engineered to produce ferromagnetic insulating (FMI) films. From combined X-ray photoelectron spectroscopy, X-ray diffraction, and electron microscopy, the elimination...

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Autores principales: Yun, Chao, Li, Weiwei, Gao, Xingyao, Dou, Hongyi, Maity, Tuhin, Sun, Xing, Wu, Rui, Peng, Yuxuan, Yang, Jinbo, Wang, Haiyan, MacManus-Driscoll, Judith L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8023513/
https://www.ncbi.nlm.nih.gov/pubmed/33586975
http://dx.doi.org/10.1021/acsami.1c00607
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author Yun, Chao
Li, Weiwei
Gao, Xingyao
Dou, Hongyi
Maity, Tuhin
Sun, Xing
Wu, Rui
Peng, Yuxuan
Yang, Jinbo
Wang, Haiyan
MacManus-Driscoll, Judith L.
author_facet Yun, Chao
Li, Weiwei
Gao, Xingyao
Dou, Hongyi
Maity, Tuhin
Sun, Xing
Wu, Rui
Peng, Yuxuan
Yang, Jinbo
Wang, Haiyan
MacManus-Driscoll, Judith L.
author_sort Yun, Chao
collection PubMed
description [Image: see text] In this work, heteroepitaxial vertically aligned nanocomposite (VAN) La(0.9)Ba(0.1)MnO(3) (LBMO)-CeO(2) films are engineered to produce ferromagnetic insulating (FMI) films. From combined X-ray photoelectron spectroscopy, X-ray diffraction, and electron microscopy, the elimination of the insulator–metal (I–M) transition is shown to result from the creation of very small lateral coherence lengths (with the corresponding lateral size ∼ 3 nm (∼7 u.c.)) in the LBMO matrix, achieved by engineering a high density of CeO(2) nanocolumns in the matrix. The small lateral coherence length leads to a shift in the valence band maximum and reduction of the double exchange (DE) coupling. There is no “dead layer” effect at the smallest achieved lateral coherence length of ∼3 nm. The FMI behavior obtained by lateral dimensional tuning is independent of substrate interactions, thus intrinsic to the film itself and hence not related to film thickness. The unique properties of VAN films give the possibility for multilayer spintronic devices that can be made without interface degradation effects between the layers.
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spelling pubmed-80235132021-04-07 Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length Yun, Chao Li, Weiwei Gao, Xingyao Dou, Hongyi Maity, Tuhin Sun, Xing Wu, Rui Peng, Yuxuan Yang, Jinbo Wang, Haiyan MacManus-Driscoll, Judith L. ACS Appl Mater Interfaces [Image: see text] In this work, heteroepitaxial vertically aligned nanocomposite (VAN) La(0.9)Ba(0.1)MnO(3) (LBMO)-CeO(2) films are engineered to produce ferromagnetic insulating (FMI) films. From combined X-ray photoelectron spectroscopy, X-ray diffraction, and electron microscopy, the elimination of the insulator–metal (I–M) transition is shown to result from the creation of very small lateral coherence lengths (with the corresponding lateral size ∼ 3 nm (∼7 u.c.)) in the LBMO matrix, achieved by engineering a high density of CeO(2) nanocolumns in the matrix. The small lateral coherence length leads to a shift in the valence band maximum and reduction of the double exchange (DE) coupling. There is no “dead layer” effect at the smallest achieved lateral coherence length of ∼3 nm. The FMI behavior obtained by lateral dimensional tuning is independent of substrate interactions, thus intrinsic to the film itself and hence not related to film thickness. The unique properties of VAN films give the possibility for multilayer spintronic devices that can be made without interface degradation effects between the layers. American Chemical Society 2021-02-15 2021-02-24 /pmc/articles/PMC8023513/ /pubmed/33586975 http://dx.doi.org/10.1021/acsami.1c00607 Text en © 2021 The Authors. Published by American Chemical Society Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Yun, Chao
Li, Weiwei
Gao, Xingyao
Dou, Hongyi
Maity, Tuhin
Sun, Xing
Wu, Rui
Peng, Yuxuan
Yang, Jinbo
Wang, Haiyan
MacManus-Driscoll, Judith L.
Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length
title Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length
title_full Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length
title_fullStr Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length
title_full_unstemmed Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length
title_short Creating Ferromagnetic Insulating La(0.9)Ba(0.1)MnO(3) Thin Films by Tuning Lateral Coherence Length
title_sort creating ferromagnetic insulating la(0.9)ba(0.1)mno(3) thin films by tuning lateral coherence length
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8023513/
https://www.ncbi.nlm.nih.gov/pubmed/33586975
http://dx.doi.org/10.1021/acsami.1c00607
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