![]() ![]() ![]() However, to develop fully-functional spintronic devices on flexible organic substrates is quite challenging. The goal of realizing fully-functional flexible spintronic devices is important because it will not only complete the flexible electronics family but also enrich the field of spintronic applications 15. Nowadays, spintronic devices based on giant magnetoresistance (GMR) and magnetic tunnel junctions (MTJs) are widely used for magnetic sensors 10, 11, read heads for hard-disk drives 12, magnetoresistive random access memory (MRAM) 13 and they have also been proposed for spin logic 14. Up to now, remarkable applications based on flexible electronics include displays 5, organic light-emitting diodes (LED) 6, organic solar cells 7, and various kinds of sensors 8, 9. Flexible electronics have benefited from the recent development of organic and inorganic electronics, which are prepared by using thin film technologies or printing. There are prospects for applications such as biological 2 and wearable devices 3, 4. ![]() Flexibility offers great advantages over conventional rigid electronics, such as light weight, bendable, portable, and potentially foldable devices 1, which could be integrated onto many kinds of surface. The demonstrated flexible MgO-barrier MTJs opens the door to integrating high-performance spintronic devices in flexible and wearable electronics devices for a plethora of biomedical sensing applications.įlexible electronics has been a centre of attention in past decades due to the rapid growth of the market, as well as growing scientific interest. The devices‘ robustness is manifested by its retained excellent performance and unaltered TMR ratio after over 1000 bending cycles. Remarkably, such flexible MTJs are fully functional, exhibiting a TMR ratio as high as 190% under bending radii as small as 5 mm. In this work, we have developed a method to fabricate high-performance MgO-barrier MTJs directly onto ultrathin flexible silicon membrane with a thickness of 14 μm and then transfer-and-bond to plastic substrates. The required stringent fabrication processes to obtain high quality MgO-barrier MTJs, however, limit its integration with flexible electronics devices. It could play an important role in wearable medical devices if they can be fabricated on flexible substrates. The magnetic tunnel junction (MTJ) using MgO barrier is one of most important building blocks for spintronic devices and has been widely utilized as miniaturized magentic sensors. ![]()
0 Comments
Leave a Reply. |