Samarium silicide 
Molecular formula: SmSi2

Application: 
(1) Due to its excellent comprehensive performance such as high temperature stability, strong corrosion resistance, and high energy supply, it is widely used in automobiles, transportation, computer technology, radar, satellite communication, and aerospace technology. 
(2) It is a strong neutron absorber that can be added to the control rods of nuclear reactors. During the operation of the reactor, it also forms a decay product, which is an important consideration in the design and operation of the reactor.