Magnetic properties of RY2Ni9 compounds and their hydrides (R = La, Ce)

摘要

The magnetic properties of the Ry(2)Ni(9) ternary alloys (R = La, Cc) and their hydrides have been investigated. Both LaY2Ni9 and CeY2Ni9 are ferromagnets with T-C = 15 and 92 K, respectively. Upon H absorption LaY2Ni9H12 becomes a Pauli paramagnet, whereas CeY2Ni9H8 remains ferromagnetic with an additional magnetic contribution of trivalent Ce atoms belonging to the MgZn2 units occupied by hydrogen atoms. (c) 2006 Elsevier Inc. All rights reserved.