Study of the Magnetic and Optical Properties of Magnetic Compounds under Pulsed High Magnetic Fields up to 40T

The goal of this research proposal is to establish the first portable pulsed high-filed magnetic equipment (PPHFM) in Taiwan. The pulsed high-field equipments are quite different with the traditional superconductor magnet, which has the max static field at ~ 20T. The pulsed high-field equipments are low cost, saving energy and generating higher fields (＞ several tens tesla). The PPHFM is a new member of pulsed high-field magnet family, which can generate max field up to 45T (compatible to the world record of static magnetic field). As we know, the extreme environments, such as high-fields, low temperatures and high-pressures, are necessary in the basic studies of the physical and chemical properties on the interesting novel materials. The PPHFM can be integrated with optical measurement system to study the magnetic property, magnetic-optic, energy gap(energy band) structure, density of carriers, and transport properly, leading to the better understand of the mechanism of physic phenomena and great help to assemble new materials and applications. In this proposal, there are three main purposes. First, we are going to build the first PPHFM in Taiwan. Second, the polarization optical elements will be used to measure the Faraday rotation of magnetic materials, which can give the high-field magnetizations. Third, by integrating with spectrometer, we can study the changes of spectra under high-fields. We will cooperate with Prof. T.-M. Pan in Electronic Engineering Dept. and Prof. H. L. Liu, Y. Y. Hsu in National Taiwan Normal Univ. as well as Prof. H. D. Yang in National Sun Yat-sen Univ. By the closely collaboration of researchers, we hope that we can distribute the related technique of pulsed high-fields, share the different point of view, and produce new ideas and innovations. This proposal could be the beginning of the high-field study in Taiwan and create new field in the basic study.

Project ID:PA9912-0147
External Project ID:NSC99-2112-M182-001-MY2