Technologies for Development of High Performance Electric Motors and their Applications In recent years, demands for high efficiency and performance of electric motors become higher for an environmental problem, an electric vehicle, and a high precision fabrication, and so on. In order to develop high performance motors, magnetic materials such as an iron core and a permanent magnet, and numerical techniques for design have been remarkably progressed, and high performance motors have been realized. In this symposium, the recent topics on technologies for development of high performance electric motors and their applications are presented by solicited speakers. Namely, the recent trends of magnetic materials and numerical techniques are explained. Moreover, […]

Micro actuators with small permanent magnets Since the 1990’s, there have been increased activity on developments in micro actuators with utilizing microprocessing and MEMS technologies. They look unrelated to magnetics because electrostatic or piezic force is applying to power sources for almost of all micro actuators with dimensions of micron order. However, considerably high output by electromagnetic force has been expected for milli- or sub-milli-sized actuators which may be more important from the point of view of practical usage. The 142nd Topical Symposium of Magnetics Society of Japan aims at reviewing the advantages of electromagnetic force for such micro actuators, examples of them, small motors, and miniaturization of permanent magnets […]

Theme: Fabrication and Biomedical Applications of Magnetic Beads There is growing interest in the development of magnetic beads for biomedical applications. Well known examples of the applications of magnetic beads in the life sciences is the use of superparamagnetic iron oxide nanoparticles as contrast agents in magnetic resonance imaging and magnetic carriers in screening blood donors. The future development of this field will require an interdisciplinary approach involving the cooperation of researchers involved in magnetics and biomedicine. In this joint symposium, scientists and engineers actively working in these areas will describe the present status and future prospects of their research. The presentations have been specially planned for newcomers to the […]

Magnetic Interlayer Coupling Magnetic interlayer coupling creates various spin structures in the magnetic multilayer. These structures have been the subject of extensive research into magnetism, and have provided many new magnetic devices for use in technology. Recent experimental and theoretical studies make it possible to understand the origins of the interlayer coupling. Progresses in the interlayer-coupling-controlling techniques have fabricated the development of new devices, such as magnetic recording media, reading heads magneto-optical recording, and magnetic random access memories (MRAM). In this symposium, we will focus on the recent magnetic interlayer coupling research and its’ potential applications. We have invited a number of active researchers in this field. They will inform […]

Magnetic Recording for the Future Data Storage Storage devices, especially hard disk drives (HDDs), are remarkably improved these days. HDDs are applied to video recorders, mobile audio-visual systems, car navigation systems, and computer storage systems. A variety of those applications is spreading out further, so there is a big demand on improvement for HDDs of high density and large capacity. Because the technical barriers are being pushed higher and higher, the relative progress in the field of high density recording is slowed. Of course, further research and development of perpendicular magnetic recording is important for making new breakthroughs. Additionally, future technologies beyond perpendicular magnetic recording are also important. In this […]

Recent Studies on Magnetic Fine Particles Recently, there have been emerged renewed interests in studies of magnetic fine particles as the representative field of nanotechnology. The field of interests ranges from basic physics to applications to recording media, medical science and so on. In this symposium, the latest topics on magnetic fine particles are presented by researchers in various fields. We invite all researchers, engineers, and students who are interested in this emerging field to participate in this symposium and to join active discussion. Date: November 26 / 2004 (Friday) 9:30-17:40 Place: Room 501, Kagaku Kaikan, 1-5 Kanda-Surugadai, Chiyoda-ku, Tokyo (phone: 03-3292-6161) (URL: http://www.chemistry.or.jp/kaimu/office/map.html) In cooperation with: IEEE Magnetics Society Japan […]

Recent Progress of SQUID Technology SQUID (Superconducting Quantum Interference Device) magnetometer which shows the highest sensitivity mainly attracted attention as non-invasive medical diagnosis. In recent years, SQUID using the high temperature superconducting materials and its application range are extended to various technical fields. It can just be called the good example to which medical needs led progress of technology following MRI. In this symposium the latest technical trend and the future view of the SQUID technology are reported by representative researachers. We appreciate a participation of researcher and engineer in various fields. Date: July 23 / 2004 (Friday) 10:00 – 16:40 Place: Kagaku Kaikan (URL: http://www.chemistry.or.jp/kaimu/office/map.html) In cooperation with: IEEE Magnetics […]

The discovery of high-temperature superconductors has given the tremendous influence on the growth technique of oxide thin-film materials. Since the great amount of research resources has been input into this field within a quite short period, remarkable progress in the growth techniques and skills has been achieved, and consequently, we can easily buy a growth machine specially designed for oxide thin films. We never ignore the contribution of Japanese researchers toward the progress in oxide thin-film research, by which we can upgrade the growth technique of oxide materials formerly regarded as `setomono’ ceramics to the level of semiconductor materials where the crystal structure is artificially designed in an atomic-layer scale. […]

Recent Progress of Perpendicular Magnetic Recording and Future Forecast With the progress of recording density and storage capacity, Hard Disk Drive (HDD) is expanding its application not only in computer storage area but also in consumer market. However, the development of higher density technology is much challenging to overcome fundamental limits such as superparamagnetic limit and atomic level low flying height and hence annual growth rate decelerates. Under this situation, benefit of changing to Perpendicular Recording becomes significant and its entry in the market is driven by the marketfs high density requirements. In this symposium, a progress of recent Perpendicular Recording technology in media, head and drive areas are reported […]

The current status of spin electronics, and its future In recent years, the research on the physics and applications of spin electronics are increasingly active in many companies and institutions worldwide. One of the most important applications is magnetic random access memory (MRAM) and Magnetoresistive heads, and information processing application based on spin dependent transport phenomena. However, there are many subjects in order to actualize the applications. Especially, low electric power technology of spin reversal, a half metal thin film, a new device, etc. are considered to be important subjects, and various trials are carried out to the important subjects from a viewpoint of both basic research and application development. […]