A research group led by Professor Shojiro Tateyama of the University of Tokyo has succeeded in generating a strong magnetic field of 985 Tesla by a super-strong magnetic field generation method called "electromagnetic enrichment method" and measuring it with high accuracy.As a highly controlled magnetic field in laboratory experiments, the research group's 2011 record of 730 Tesla was significantly set, reaching 1000 Tesla.
Since the 1970s, the research group has been developing for the generation of ultra-strong magnetic fields by the pulse method and applied research to condensed matter physics in extreme environments using this.A seed magnetic field (at the time of ultra-high-speed concentration of magnetic flux) using a high-efficiency magnetic field generation coil newly devised for electromagnetic concentration (a method of generating an ultra-strong magnetic field by ultra-high-speed concentration of magnetic flux) by an independently developed simulation. By adjusting the value of (initial magnetic field), it was predicted with high reliability that a stronger magnetic field could be generated.
On the other hand, near 1000 Tesla (more than 1 million times that of geomagnetism), due to problems such as intense electromagnetic noise, shock waves due to high-speed contraction of magnetic flux, and other problems such as electrical breakdown, measurement of about 600 Tesla is a technology for electrical measurement. It was the limit.The research group has made it possible to make precise measurements up to the vicinity of the highest point of magnetic field by using various ingenuity and advanced measurement technology using an optical measurement method called "Faraday rotation".
It was shown that this makes it possible to generate an ultra-strong magnetic field of 1000 Tesla, and that it is possible to measure physical properties in the extremely strong magnetic field environment in the 1000 Tesla region in the future.In addition to spatial and temporal artificial control, this generated magnetic field enables various highly reliable physical measurements.Therefore, it is expected to be a powerful means for elucidating unexplained solid-state physics quantum phenomena in semiconductors, nanomaterials, organic substances, superconductors, and magnetic materials.
Paper information:[Review of Scientific Instruments] Note: An approach to 1000 T using the electro-magnetic flux compression
