title: Investigation of Fe incorporation in LnCr2Al20 (Ln = La, Gd, Yb) with 57Fe Mössbauer and single crystal X-ray diffraction.
abstract: Crystal growth, structure determination, and magnetic properties of LnCr2Al(20-x)Fe(x) (Ln = La, Gd, Yb) adopting the CeCr2Al20 structure type with space group Fd3m, a ∼ 14.5 Å, are reported. Single crystal X-ray diffraction and Mössbauer spectroscopy are employed to fully characterize the crystal structure of LnCr2Al(20-x)Fe(x) (Ln = La, Gd, Yb). LnCr2Al(20-x)Fe(x) (Ln = La, Gd, Yb) are the first pseudoternaries adopting the CeCr2Al20 structure type with a transition metal occupying the main group site. The Yb analogues are Pauli paramagnets with the Yb ion adopting an electronic configuration close to Yb(2+), while the Gd analogues show paramagnetic behavior with no magnetic order down to 3 K.
authors.affiliation: Department of Chemistry, 232 Choppin Hall, Louisiana State University, Baton Rouge, Louisiana 70803, United States.
authors.forename: LaRico J
authors.initials: LJ
authors.lastname: Treadwell
authors.forename: Jacob D
authors.initials: JD
authors.lastname: McAlpin
authors.forename: Devin C
authors.initials: DC
authors.lastname: Schmitt
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Kangas
authors.forename: Moulay T
authors.initials: MT
authors.lastname: Sougrati
authors.forename: Neel
authors.initials: N
authors.lastname: Haldolaarachchige
authors.forename: David P
authors.initials: DP
authors.lastname: Young
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Jumas
authors.forename: Julia Y
authors.initials: JY
authors.lastname: Chan