*Rare Earth Elements in New Advanced Engineering Applications DOI: http://dx.doi.org/10.5772/intechopen.109248*

course, the search is ongoing and materials that could replace or reduce the amount of REE in individual applications are considered. However, due to their superior properties, we are currently unable to replace them in some usage because it would involve a deterioration of the quality and efficiency of the components in which they are used. There are still applications where the potential of rare earth elements has not been fully exploited and we will certainly observe their further development.
