title: Investigation of the effect of Ni substitution on the physical properties of Ce(Cu(1-x)Ni(x))(y)Sb(2).
abstract: Single crystals of Ce(Cu(1-x)Ni(x))(y)Sb(2) (x = 0, 0.25, 0.37, 0.46; y∼0.7) were synthesized using a flux growth method and crystallize in the tetragonal P4/nmm space group with lattice parameters of a∼4.4 Å and c∼9.8 Å. The effects of Ni substitution on the magnetic and electrical transport properties are investigated. Three of the analogues (with x = 0, 0.37, and 0.46) show antiferromagnetic behavior while the x = 0.25 sample is paramagnetic down to 2 K. Field-dependent magnetization data as well as resistivities are presented. Positive magnetoresistance behaviors above 70% are observed for the analogues with x = 0, 0.37, and 0.46 at 3 K and up to 9 T. The La analogue La(Cu(0.2)Ni(0.8))(y)Sb(2), has been synthesized and large, positive magnetoresistance of ∼300% is observed at 3 K and 9 T.
authors.affiliation: Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803, USA.
authors.forename: Dixie P
authors.initials: DP
authors.lastname: Gautreaux
authors.forename: Michael
authors.initials: M
authors.lastname: Parent
authors.forename: Amar B
authors.initials: AB
authors.lastname: Karki
authors.forename: David P
authors.initials: DP
authors.lastname: Young
authors.forename: Julia Y
authors.initials: JY
authors.lastname: Chan