Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 49, Pages 42698-42705Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b16626
Keywords
flexible device; ferromagnetic; magnetoresistance; thin film; pulsed laser deposition
Funding
- Turner Chair Professor Fund at Purdue University
- U.S. Office of Naval Research [N00014-16-1-2465]
- U.S. National Science Foundation [DMR-1565822]
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Integrating oxide thin films on flexible substrates is a critical step toward future applications of multifunctional oxides for flexible electronics and spintronic devices. As a demonstration, multifunctional La(0.67)Sr(0.3)3MnO(3) (LSMO) thin films have been deposited on flexible mica substrates. The crystallinity and microstructure of the films have been characterized to show the good epitaxial quality of the films. The LSMO thin films on mica present excellent ferromagnetic and magnetoresistance properties (such as saturation magnetization M-s of 125-400 emu/cm(3) at 10 K and a high MR value of similar to 45% at 5 K under 1 T for the 50 mTorr deposited sample), which is even better than the ones on conventional rigid single-crystal oxide substrates. More interestingly, no deterioration of the properties is observed under mechanically bending condition, which demonstrates the good mechanical stretchability and property stability of the LSMO thin films on mica. The demonstration of functional oxides integrated on flexible mica substrates paves a route toward future flexible spintronics and electronics.
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