LaB6 is widely used in the military industry and many other high-tech fields due to its superior performance, such as radar, aerospace, electronics, instruments and metallurgy.

Its strengths lie at its high electrons generated intensity, intense resistance radiation and good chemical stability under high temperature. Among its category, the single crystal of lanthanum boride is the best material to make high power tubes, magnetrons, electron beams, plasma beams and cathodes of accelerators.