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[1] Magnetic reversal
The reversal of magnetization caused by magnetic fields or electrical currents.
[2] Large-scale magnetic-reversal simulation technology developed in 2013
See September 5, 2013 press release, "Fujitsu Develops New Simulation Technology for Designing Magnetic Materials": http://www.fujitsu.com/global/about/resources/news/press-releases/2013/0905-01.html
[3] K computer
The K computer, which was jointly developed by RIKEN and Fujitsu, is part of the High-Performance Computing Infrastructure (HPCI) initiative led by Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT). The K computer's availability for shared use began in September 2012. The "K" in K computer comes from the Japanese Kanji character "Kei" which means ten peta or 10 to the 16th power. In its original sense, "Kei" expresses a large gateway, and it is hoped that the system will be a new gateway to computational science. This simulation was run using the K computer’s commonly used problem set hp150014 (Yoshihiro Goda, Tokyo University).
[4] Neodymium magnet
A rare-earth magnet consisting of elemental neodymium (Nd), iron (Fe), and boron (B), it is the strongest type of permanent magnet. Although neodymium is classified as a rare-earth element, it is not a rare element on earth, and is present at levels similar to common metals such as cobalt, nickel, and copper.
[5] Dysprosium
A heavy rare-earth element that is truly rare. Like another heavy rare-earth element, terbium (Tb), this is an effective element for increasing the coercivity of neodymium magnets, but because it has only 10% the prevalence of neodymium, reducing the use of it is a high priority.
[6] Coercivity
The strength with which a magnet can sustain its action as a magnet in the face of a magnetic field opposing its own magnetic force. The neodymium magnets used for electric-car motors need high coercivity, and use the rare dysprosium for that reason.
[7] Finite-element method
A method of numerical analysis widely used in structural analysis and magnetic-field analysis.
[8] Micromagnetics
A method of analyzing the fine structure of a magnetic material. In a computer simulation, if the magnetic material is divided into regions the size of a few atoms, the computing time is enormous.
[9] Parallelization
Parallel processing is a computing technique in which multiple CPU cores are used in parallel to increase computing performance; this is a measure of the number of CPU cores being used in parallel.
[10] Elements Strategy Initiative Project
A project of the Ministry of Education, Culture, Sports, Science and Technology. Founded to discover the properties and functions of materials, its goal is to develop high-performance materials without relying on rare or toxic elements. The Elements Strategy Initiative Center for Magnetic Materials was set up at NIMS as the center for researching magnetics under this project, and has pursued the development of advanced magnetic materials.
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Date: 12 January, 2016
City: Tokyo
Company:
Fujitsu Limited