The Forefront of Magnetic Imaging Techniques In the last few years, magnetic imaging techniques have been developed drastically. Nowadays these imaging techniques allow us to observe millimeter- to atomic-scale magnetic structures. Each imaging technique now focuses to easily detect quantitative three-dimensional spin information. In this symposium the forefront of eight kinds of magnetic imaging techniques will be introduced. We have invited eight active researchers of each field. They will inform us the mechanism and the latest development of the magnetic imaging techniques. We very much look forward to your participants. Date: 20th July 2007 (Friday) 10:00-16:40 Venue: Surugadai Kinen Kaikan, Room 680, Chuuou University Kandasurugadai 3-11-5, Chiyoda, Tokyo (3 mins. […]

Recent Progress on Fabrication of Nano-Structured Magnetic Materials Recently, there has been growing importance in fabrication and control of the nano-structure in magnetic materials. New challenges for the nano-structuring, in addition to the conventional film deposition and pattering processes, are starting especially in tunnel magnetoresistance (TMR) devices, current-perpendicular-to-the-plane giant magnetoresistance (CPP-GMR) devices and patterned magnetic recording media. In this topical symposium, we have invited active authorities and planned their lectures on recent progress in such fields. We very much look forward to your participation. Moreover, we will also welcome the continuing participation from the general meeting of the Magnetic Society of Japan. Date: May 15, 2007 (Tuesday) 13:00-16:40 Venue: Surugadai […]

Progress in MTJ and its future application for Spin-electronics devices Development of new materials such as crystalline MgO tunneling barrier and half metallic materials provides magnetic tunneling junction (MTJ) with extremely high magnetoresistaice ratio. The appearance of these high quality MTJs accelerated not only the development of new spin-electronics devices such as MRAM and Spin-RAM, but also the research on the interaction between spin current and localized magnetic moments. In this symposium, we will focus on the recent research on MTJs and their application to the spin-electronics devices. We will also discuss new spin-electronics phenomena for the future devices. We have invited a number of active researchers in this field. […]

Future migration of advanced magnetic and optical storage technologies According to the progress of high-speed network technology, large data exchange and storage can be easily operated in the world. As advanced data storage, both the higher recording density and the faster data rate are required. However, optical recording faces to the physical limit of the standard optics and the standard magnetic recording faces to the physical limit of the recording field. In order to break the limit, near field optical recording is studied beyond standard optics. On the other hand, as all new optical recording technology, many holographic recording are reported. The highest recording density of the holographic storage is […]

Recent Progress of Basic Technology for Ultra High-Density Heat Assisted Magnetic Recording 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, but the technical barriers are being pushed higher and higher. In these backgrounds, fundamental research of heat assisted magnetic recording has been progressed recently for making new breakthroughs. In this topical symposium, we invited active researchers in the field of hybrid recording. Recent topics for […]

The physical properties and applications on Mn group materials Mn takes various ion states in 3d transition metals, and it is known that it shows nature of magnetism peculiar by the spin state. We planned a broad study introduction and recruited the latest topic for the field in a key word with Mn. An alloy and a compound including Mn, show various magnetism, and a Mn molecule magnet, the diluted magnetic semiconductor which added Mn in an III-V semiconductor, new possibility are expected to a ferroelectric magnetic device by commensurate anti-ferromagnetism of a perovskite type Mn oxide. We introduce the latest studies from the basics to realize such Mn magnetism […]

Innovative Trends of Microwave Ferrite Devices and Expectation for the New LH-materials In 1956, the paper by C.L.Hogan,” The Elements of Nonreciprocal Microwave Devices” (IRE proc.,Vol.44, Oct.1956,pp.1345-1368), was published. Since then, during a half century, “Circulator/Isolator” has become an indispensable component for microwave communication systems such as TV broadcasting base station, wireless systems for business and emergency, and recent mobile phone systems. Especially, here in Japan, the lumped element isolator has been uniquely developed, following the early research by the pioneer, Dr. Konishi. One of the great achievements of the last decade is the miniaturization of small isolator for mobile phone handsets. The 4mm square isolator has already been realized […]

The magnetization reversal for various actions The magnetization reversal is the most basic function of the magnetic materials, and the control of the magnetization reversal is important to improve the performance of magnetic devices. In these days, causing the magnetization reversal by various actions other than the magnetic field becomes possible, and it is expected to be a new way of the control technology for the magnetization reversal. In this topical symposium, invited lecturers active in the first front of the related field will give the talks for novel research relating the magnetization reversal due to various actions. We try to plan this symposium for a wide researching field, and […]

Recent Trend of Rare Earth Magnets and their Applications Nd-Fe-B magnets have been developed by remarkable growth in electronic industry. The main applications of Nd-Fe-B magnets were voice coil motors and spindle motors in hard disk drives (HDD) at the beginning. It’s more than 20 years since the Nd-Fe-B magnets were invented, which have been extending their applications such as MRI, home appliances, wind power generation, industrial motors, and traction motors for rail vehicle and HEV. The 147th Topical Symposium of Magnetics Society of Japan aims at reviewing the recent trend of rare earth magnets and their applications to inspire further development. We sincerely appreciate participation of researchers and engineers who […]

Fundamental and Recent Progress of L10 Ordered Magnetic Alloys Recently, L10-type FePt and CoPt ordered magnetic alloys are attracting much attention as “high anisotropy nano-magnetic materials” and their applications are expected in magnetic recording materials and thin film magnets. Historically, these materials were discovered as permanent magnets in the 1930s, and various aspects, i.e. magnetism, magneto-optical properties, ordering transformation, and microstructures, have been studied, which lead to the basis of today’s research and development for the advanced magnetic materials. In this symposium, we have invited active authorities in such fundamental fields and will discuss their potential applications based on the particular properties of the L10-type ordered alloys. We very much look forward to […]