<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>ThM<sub>2</sub>Al<sub>20</sub> (M: Ti, V, Mn, Fe) alloys are prepared by arc melting of the elements followed by annealing (Ta foil in quartz capsule under Ar, 800 °C, 3 weeks).</p> </abstract>