Use of Ion Conducting Solid Electrolyte Created a Breakthrough. A Step toward Realization of Low-Current High-Capacity Memory Devices.
A research team at National Institute for Materials Science (NIMS) Materials Nanoarchitectonics (MANA) and Tokyo University of Science, Japan, jointly developed a device capable of controlling magnetism at a lower current level than conventional spintronics devices.
The new device was fabricated by combining a solid electrolyte with a magnetic material, and enabling insertion/removal of ions into/from the magnetic material through application of voltage.
A research team of International center for Materials Nanoarchitectonics (MANA), consisting of postdoctoral fellow Takashi Tsuchiya (currently at Tokyo University of Science), group leader Kazuya Terabe, and Director Masakazu Aono, developed a device capable of controlling magnetism at a lower current level than conventional spintronics devices, with lecturer Tohru Higuchi at Tokyo University of Science.
The new device was fabricated by combining a solid electrolyte with a magnetic material, and enabling insertion/removal of ions into/from the magnetic material through application of voltage. Because the device has a simple structure and is capable of high integration, it may lead to the development of totally new high-density high-capacity memory devices with low power consumption.
High-density high-capacity recording (memory) devices for storage of a vast amount of data have become important due to the information explosion today. Spintronics devices, which utilize characteristics of both the charge and spin of electrons to record information, are attracting much attention as a type of memory device.
However, it has been pointed out that the spintronics elements are difficult to use in high integration due to their complex structures and they require a high level of write current.
Using a lithium ion conducting solid electrolyte, the research group inserted/removed lithium ions into/from the Fe3O4 magnetic material to change the electronic carrier density and electronic structure of the magnetic material. By doing so, the research group successfully tuned magnetic properties including magnetoresistance and magnetization.
The technique developed in this study, which takes advantage of ionic motion, enables spintronics devices to control magnetism at a lower current level than conventional devices, allows them to have a simple structure, and makes them capable of high integration.
Furthermore, the whole of the device is made of solid materials, preventing liquid leakage from occurring. Because of these advantageous features, this technique is expected to enable the development of high-density high-capacity memory devices with low power consumption, using conventional semiconductor processes.
Based on these results, the research group will make further progress in the development of microfabrication techniques to achieve high integration, and conduct demonstration experiments aiming to apply this technique to high-density high-capacity memory devices.
This study was published in the online version of ACS NANO on January 6, 2016 (Japan time).
Mikiko Tanifuji | Research SEA
One in 5 materials chemistry papers may be wrong, study suggests
15.12.2017 | Georgia Institute of Technology
Scientists channel graphene to understand filtration and ion transport into cells
11.12.2017 | National Institute of Standards and Technology (NIST)
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Power and Electrical Engineering
15.12.2017 | Materials Sciences
15.12.2017 | Life Sciences