Reducing leakage current and enhancing polarization in multiferroic 3D super-nanocomposites by microstructure engineering

Enriquez, Erik; Lu, Ping; Li, Leigang; Zhang, Bruce; Wang, Haiyan; Jia, Quanxi; Chen, Aiping

doi:10.1088/1361-6528/ac5f98

Reducing leakage current and enhancing polarization in multiferroic 3D super-nanocomposites by microstructure engineering

Journal Article · Fri Jul 15 00:00:00 EDT 2022 · Nanotechnology

DOI:https://doi.org/10.1088/1361-6528/ac5f98· OSTI ID:1876250

Enriquez, Erik; Lu, Ping; Li, Leigang; Zhang, Bruce; ; ;

Abstract

Multiferroic materials have generated great interest due to their potential as functional device materials. Nanocomposites have been increasingly used to design and generate new functionalities by pairing dissimilar ferroic materials, though the combination often introduces new complexity and challenges unforeseeable in single-phase counterparts. The recently developed approaches to fabricate 3D super-nanocomposites (3D‐sNC) open new avenues to control and enhance functional properties. In this work, we develop a new 3D‐sNC with CoFe ₂ O ₄ (CFO) short nanopillar arrays embedded in BaTiO ₃ (BTO) film matrix via microstructure engineering by alternatively depositing BTO:CFO vertically-aligned nanocomposite layers and single-phase BTO layers. This microstructure engineering method allows encapsulating the relative conducting CFO phase by the insulating BTO phase, which suppress the leakage current and enhance the polarization. Our results demonstrate that microstructure engineering in 3D‐sNC offers a new bottom–up method of fabricating advanced nanostructures with a wide range of possible configurations for applications where the functional properties need to be systematically modified.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: 89233218CNA000001; NA0003525

OSTI ID:: 1876250

Alternate ID(s):: OSTI ID: 1879409

Report Number(s):: LA-UR-22-27206

Journal Information:: Nanotechnology, Journal Name: Nanotechnology Journal Issue: 40 Vol. 33; ISSN 0957-4484

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United Kingdom

Language:: English

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