TY - JOUR
T1 - Structure and magnetic properties of the ternary gallides CeMGa (M=Mn, Co and Cu) and their hydrides
AU - Chevalier, B.
AU - Bobet, J. L.
AU - Pasturel, M.
AU - Gaudin, E.
AU - Etourneau, J.
PY - 2003/8/11
Y1 - 2003/8/11
N2 - The ternary gallides CeMGa present various structural properties since CeMnGa, CeCoGa and CeCuGa crystallize, respectively, in the cubic MgCu2-, monoclinic CeCoAl-, and orthorhombic CeCu2-type structure. These compounds absorb hydrogen at room temperature but hydrogenation induces a change of the crystalline structure: (i) CeCoGaH3.0 and CeCuGaH0.8 adopt the hexagonal AlB2-type; (ii) on the contrary, the cubic MgCu2 structure is preserved for CeMnGaH1.6. Moreover, in some cases hydrogenation leads to a valence change for Ce. For instance, CeCoGa is considered as intermediate valence compound, whereas CeCoGaH3.0 contains Ce3+. This paper demonstrates that hydrogenation strongly influences the Kondo effect in these intermetallics.
AB - The ternary gallides CeMGa present various structural properties since CeMnGa, CeCoGa and CeCuGa crystallize, respectively, in the cubic MgCu2-, monoclinic CeCoAl-, and orthorhombic CeCu2-type structure. These compounds absorb hydrogen at room temperature but hydrogenation induces a change of the crystalline structure: (i) CeCoGaH3.0 and CeCuGaH0.8 adopt the hexagonal AlB2-type; (ii) on the contrary, the cubic MgCu2 structure is preserved for CeMnGaH1.6. Moreover, in some cases hydrogenation leads to a valence change for Ce. For instance, CeCoGa is considered as intermediate valence compound, whereas CeCoGaH3.0 contains Ce3+. This paper demonstrates that hydrogenation strongly influences the Kondo effect in these intermetallics.
U2 - 10.1016/S0925-8388(02)01223-9
DO - 10.1016/S0925-8388(02)01223-9
M3 - Article
SN - 0925-8388
VL - 356/357
SP - 147
EP - 150
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -