Hierarchically Engineered Manganite Thin Films with a Wide-Temperature-Range Colossal Magnetoresistance Response

Guo S, Wang B, Wolf D, Lubk A, Xia W, Wang M, Xiao Y, Cui J, Pravarthana D, Dou Z, Leistner K, Li RW, Huehne R, Nielsch K (2023)

Publication Type: Journal article

Publication year: 2023

Journal

ACS nano American Chemical Society

Book Volume: 17

Pages Range: 2517-2528

Journal Issue: 3

DOI: 10.1021/acsnano.2c10200

Abstract

Colossal magnetoresistance is of great fundamental and technological significance in condensed-matter physics, magnetic memory, and sensing technologies. However, its relatively narrow working temperature window is still a severe obstacle for potential applications due to the nature of the material-inherent phase transition. Here, we realized hierarchical La0.7Sr0.3MnO3 thin films with well-defined (001) and (221) crystallographic orientations by combining substrate modification with conventional thin-film deposition. Microscopic investigations into its magnetic transition through electron holography reveal that the hierarchical microstructure significantly broadens the temperature range of the ferromagnetic-paramagnetic transition, which further widens the response temperature range of the macroscopic colossal magnetoresistance under the scheme of the double-exchange mechanism. Therefore, this work puts forward a method to alter the magnetic transition and thus to extend the magnetoresistance working window by nanoengineering, which might be a promising approach also for other phase-transition-related effects in functional oxides.

Involved external institutions

Chinese Academy of Sciences (CAS) / 中国科学院

China (CN) Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden

Germany (DE)

How to cite

APA:

Guo, S., Wang, B., Wolf, D., Lubk, A., Xia, W., Wang, M.,... Nielsch, K. (2023). Hierarchically Engineered Manganite Thin Films with a Wide-Temperature-Range Colossal Magnetoresistance Response. ACS nano, 17(3), 2517-2528. https://dx.doi.org/10.1021/acsnano.2c10200

MLA:

Guo, Shanshan, et al. "Hierarchically Engineered Manganite Thin Films with a Wide-Temperature-Range Colossal Magnetoresistance Response." ACS nano 17.3 (2023): 2517-2528.

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