Weiland Ashley, Li Sheng, Benavides Katherine A, Burnett Joseph V, Milam-Guerrero JoAnna, Neer Abbey J, McCandless Gregory T, Lv Bing, Chan Julia Y
Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States.
Inorg Chem. 2019 May 6;58(9):6028-6036. doi: 10.1021/acs.inorgchem.9b00338. Epub 2019 Apr 15.
Single crystals of LnFeCo SbBi (Ln = La, Ce; 0 ≤ x < 0.5; 0 ≤ y ≤ 0.2) were grown using Bi flux and self-flux methods. The compounds adopt the LaFeSb structure type with tetragonal space group I4/ mmm. The LaFeSb structure type is comprised of rare earth atoms capping square Sb nets in a square antiprismatic fashion and two transition-metal networks forming a PbO-type layer with Sb and transition-metal isosceles triangles. Substituting Co into the transition-metal sublattice results in a decrease in the transition temperature and reduced frustration, indicative of a transition from localized to itinerant behavior. In this manuscript, we demonstrated that Bi can be used as an alternate flux to grow single crystals of antimonides. Even with the incorporation of Bi into the Sb square net, the magnetic properties are not significantly affected. In addition, we have shown that the incorporation of Co into the Fe triangular sublattice leads to an itinerant magnetic system.
