Tohoku University Technology: Optical spin device, its operation method and information storage device: T20-546
Able to keep non-volatile magnetic information and to operate at high-speed with low power consumption
Currently, further improvement of memory storage density is required with the information society development. The magnetoresistive random-access memory (MRAM), which can record information nonvolatilely for a long time, is expected to replace semiconductor memory as the next-generation memory. However, the performance is lower than semiconductor memory in term of power consumption, operating speed and signal delay, and has a low compatibility with optical information technology. This invention is able to provide an optical spin device that can store information non-volatilely and operate at high speed with low power consumption, and to provide an information storage device using this device. This invention has a magnetic material layer and a spin defect layer. It can store magnetic information non-volatilely and can operate at high speed with low power consumption. In addition, the information storage device equipped with this optical spin device is able to write and read information at high speed and high sensitivity, and is highly compatible with optical information technology, which is expected to develop rapidly in the future.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
