Rare Earth Magnets: Conservation of Energy and the Environment

Rare earth sintered magnets (Nd magnet) have been used in many applications such as computer and industrial equipment, automobile manufacturing and many others. They are highly efficient and reduce energy consumption because of their superior magnetic properties. The element dysprosium (Dy) contained in the Nd magnet is important and indispensable. It improves the stability of the Nd magnet by enhancing the coercive force of its magnetic properties at high temperature. Dy is not so abundant. The rapid growth of the Nd magnet may result in Dy shortage. Exploration for new deposits of Dy is desired.     

时间分辨-窗口技术应用研究(Ⅲ)——时间分辨荧光光谱法同时测定铽和镝

研究了Tb~(3+)、Dy~(3+)-乙酰丙酮(AA)-三正辛基氧化膦(TOPO)-Triton X-100体系的荧光特性,利用时间分辨-窗口技术实现了Tb和Dy的同时测定,用于合成样品和氧化钇试剂中痕量Tb、Dy的测定,结果良好。