『Abstract
　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.

Keywords: China; coercive force; deposit; dysprosium; ion-adsorption ore; Nd2Fe14B1; Nd magnet; neodymium; rare earth magnet; resource issue.』

1. Rare earth magnets
2. Nd magnets
3. Applied products using Nd magnets
4. Resource issues of Nd magnets
5. Role of heavy rare earth elements in Nd magnets
6. Prospect for future magnet development
7. Conclusion
Acknowledgments
References