Mechanical Strain-Tunable Microwave Magnetism in Flexible CuFe2O4 Epitaxial Thin Film for Wearable Sensors

Wenlong Liu, Ming Liu, Rong Ma, Ruyi Zhang, Wenqing Zhang, Dapeng Yu, Qing Wang, Jiannong Wang, Hong Wang

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Purely mechanical strain-tunable microwave magnetism device with lightweight, flexible, and wearable is crucial for passive sensing systems and spintronic devices (noncontact), such as flexible microwave detectors, flexible microwave signal processing devices, and wearable mechanics-magnetic sensors. Here, a flexible microwave magnetic CuFe2O4 (CuFO) epitaxial thin film with tunable ferromagnetic resonance (FMR) spectra is demonstrated by purely mechanical strains, including tensile and compressive strains, on flexible fluorophlogopite (Mica) substrates. Tensile and compressive strains show remarkable tuning effects of up-regulation and down-regulation on in-plane FMR resonance field (Hr), which can be used for flexible tunable resonators and filters. The out-of-plane FMR spectra can also be tuned by mechanical bending, including Hr and absorption peak. The change of out-of-plane FMR spectra has great potential for flexible mechanics-magnetic deformation sensors. Furthermore, a superior microwave magnetic stability and mechanical antifatigue character are obtained in the CuFO/Mica thin films. These flexible epitaxial CuFO thin films with tunable microwave magnetism and excellent mechanical durability are promising for the applications in flexible spintronics, microwave detectors, and oscillators.

Original languageEnglish (US)
Article number1705928
JournalAdvanced Functional Materials
Volume28
Issue number10
DOIs
StatePublished - Mar 7 2018

Fingerprint

Epitaxial films
Magnetism
Microwaves
Ferromagnetic resonance
microwaves
Thin films
ferromagnetic resonance
sensors
thin films
Magnetoelectronics
Mica
mica
fluorophlogopite
Mechanics
Detectors
Magnetic sensors
Tensile strain
detectors
Wearable sensors
CuFe2O4

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry

Cite this

Liu, Wenlong ; Liu, Ming ; Ma, Rong ; Zhang, Ruyi ; Zhang, Wenqing ; Yu, Dapeng ; Wang, Qing ; Wang, Jiannong ; Wang, Hong. / Mechanical Strain-Tunable Microwave Magnetism in Flexible CuFe2O4 Epitaxial Thin Film for Wearable Sensors. In: Advanced Functional Materials. 2018 ; Vol. 28, No. 10.
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Mechanical Strain-Tunable Microwave Magnetism in Flexible CuFe2O4 Epitaxial Thin Film for Wearable Sensors. / Liu, Wenlong; Liu, Ming; Ma, Rong; Zhang, Ruyi; Zhang, Wenqing; Yu, Dapeng; Wang, Qing; Wang, Jiannong; Wang, Hong.

In: Advanced Functional Materials, Vol. 28, No. 10, 1705928, 07.03.2018.

Research output: Contribution to journalArticle

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