Recent investigations on some cubic Laves phase compounds of rare earth and transition metals

Pseudobinary alloy, Tb0·27Dy0·73Fe2-δ, belonging to C-15 cubic Laves phase having MgCu2-type structure, possesses large magnetostriction and high magnetomechanical coupling coefficient. The advantages of this material over existing piezoelectric materials, particularly for SONAR applications, are highlighted. Recent results on the influence of cobalt (Co) on magnetic and magnetomechanical properties of Tb0·27Dy0·73Fe2 are discussed. © 1993 Indian Academy of Sciences.