The research group of Professor Shojiro Tateyama and Associate Professor Yasuhiro Matsuda of the University of Tokyo generated a strong magnetic field of 1200 Tesla by completing the newly introduced ultra-strong magnetic field generator, and succeeded in measuring with high reliability.It set a new world record and took strong magnetic field science to a new level.
The magnetic field is one of the physical environments that can be precisely controlled.Since it works directly on electron orbits and spins, it is indispensable for research on solid-state electronic properties such as magnetism, superconductivity, semiconductors, and nanomaterials. In a magnetic field in the 1000 Tesla region, it is possible to confine the motion of electrons in a substance to a scale of XNUMX nanometer, and to control extremely heavy electrons with a magnetic field. In order to open up an unknown area, a strong magnetic field generator capable of measuring physical properties has been required.
The strong magnetic field generation method is roughly divided into the "magnetic flux concentration method" and the "one-turn coil method". The "magnetic flux enrichment method" concentrates the generated magnetic flux to obtain an ultra-strong magnetic field, and there are an "implosion method" that uses an explosive for concentration and an "electromagnetic concentration method" that uses an electromagnetic method. In the "one-turn coil method", a large current is instantly passed through the one-turn coil to easily generate a super magnetic field, but the limit is about 300 Tesla.This time, we adopted the magnetic flux enrichment method and aimed to generate a strong magnetic field.
Under the Ministry of Education's cutting-edge research infrastructure business plan, the research group newly introduced a 1000 Tesla-class electromagnetically concentrated ultra-strong magnetic field generator, and completed the entire system in January 2018.As a result, the world's highest record of 1 Tesla (985, the same research group) was significantly set as an indoor experiment and a highly controlled magnetic field, and reached 2018 Tesla, far exceeding 1000 Tesla.
In the future, it will be possible to stably measure physical properties in the extreme ultra-strong magnetic field environment in the 1000 Tesla region, and new efforts for the next generation of ultra-strong magnetic field science are expected.
Paper information:[Review of Scientific Instruments] Record indoor magnetic field of 1200 T generated by electromagnetic flux-compression
