Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4936934
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Funding
- Center of Function Accelerated NanoMaterial Engineering (FAME), one of the six SRC STARnet Centers - MARCO
- Center of Function Accelerated NanoMaterial Engineering (FAME), one of the six SRC STARnet Centers - DARPA
- NSF E3S center at Berkeley [ECCS-0939514]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0012371]
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We report on state-of-the-art spintronic devices synthesized and fabricated directly on a flexible organic substrate. Large perpendicular magnetic anisotropy was achieved in ultrathin ferromagnetic heterostructures of Pt/Co/MgO sputtered on a non-rigid plastic substrate at room temperature. Subsequently, a full magnetic reversal of the Co was observed by exploiting the spin orbit coupling in Pt that leads to a spin accumulation at the Pt/Co interface when an in-plane current is applied. Quasi-static measurements show the potential for operating these devices at nano-second speeds. Importantly, the behavior of the devices remained unchanged under varying bending conditions (up to a bending radius of approximate to +/- 20-30mm). Furthermore, the devices showed robust operation even after application of 10(6) successive pulses, which is likely sufficient for many flexible applications. Thus, this work demonstrates the potential for integrating high performance spintronic devices on flexible substrates, which could lead to many applications ranging from flexible non-volatile magnetic memory to local magnetic resonance imaging. (C) 2015 AIP Publishing LLC.
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