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
New design improves performance of flexible wearable electronics
23.06.2017 | North Carolina State University
Plant inspiration could lead to flexible electronics
22.06.2017 | American Chemical Society
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
27.06.2017 | Power and Electrical Engineering
27.06.2017 | Information Technology
27.06.2017 | Physics and Astronomy