Journal Article

FZJ-2017-06693

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Flexible Quasi-Two-Dimensional CoFe 2 O 4 Epitaxial Thin Films for Continuous Strain Tuning of Magnetic Properties

Zhang, Y. ; Shen, L. ; Liu, M. (Corresponding author) ; Li, X.FZJ* ; Lu, X. (Corresponding author) ; Lu, L.FZJ* ; Ma, C. ; You, C. ; Chen, A. ; Huang, C. ; Chen, L. ; Alexe, M. ; Jia, C.-L.FZJ*

2017
Soc. Washington, DC

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Please use a persistent id in citations: doi:10.1021/acsnano.7b02637

Abstract: Epitaxial thin films of CoFe2O4 (CFO) have successfully been transferred from a SrTiO3 substrate onto a flexible polyimide substrate. By bending the flexible polyimide, different levels of uniaxial strain are continuously introduced into the CFO epitaxial thin films. Unlike traditional epitaxial strain induced by substrates, the strain from bending will not suffer from critical thickness limitation, crystalline quality variation, and substrate clamping, and more importantly, it provides a more intrinsic and reliable way to study strain-controlled behaviors in functional oxide systems. It is found that both the saturation magnetization and coercivity of the transferred films can be changed over the bending status and show a high accord with the movement of the curvature bending radius of the polyimide substrate. This reveals that the mechanical strain plays a critical role in tuning the magnetic properties of CFO thin films parallel and perpendicular to the film plane direction.

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Contributing Institute(s):

1. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)

Appears in the scientific report 2017

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 10 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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