title: Magnetic and structural properties of Lu(2)(Fe, Mn)(17)H(y) hydrides.
abstract: The Lu(2)Fe(17-x)Mn(x)H(y), x = 0-2, y = 0-3, hydrides with the Th(2)Ni(17)-type crystal structure were prepared and their structural and magnetic parameters were studied. The lattice parameters measured at room temperature increase smoothly with H content. The magnetic measurements indicate that the Lu(2)Fe(17)H(y) hydrides (with y up to 1.77) are antiferromagnets at high temperatures and ferromagnets at low temperatures. The Lu(2)Fe(16.5)Mn(0.5) compound also has a high temperature antiferromagnetic state, but its hydrides are ferromagnets only. The Lu(2)Fe(17-x)Mn(x)H(y) hydrides, with x = 0.7 and 2, are ferromagnets with T(c) monotonically increasing with H content. The saturation magnetization measured for Lu(2)Fe(17-x)Mn(x)H(y), (x = 0,0.5,0.7,2 and 0<y<3) hydrides is practically insensitive to hydrogen concentration changes.
authors.affiliation: Institute of Low Temperature and Structure Research, PAS, 1410, PL-59-950 Wroclaw 2, Poland.
authors.forename: W
authors.initials: W
authors.lastname: Iwasieczko
authors.forename: A G
authors.initials: AG
authors.lastname: Kuchin
authors.forename: H
authors.initials: H
authors.lastname: Drulis