Investigation of Fe incorporation in LnCr2Al20 (Ln = La, Gd, Yb) with 57Fe Mössbauer and single crystal X-ray diffraction

LaRico J Treadwell; Jacob D McAlpin; Devin C Schmitt; Michael J Kangas; Moulay T Sougrati; Neel Haldolaarachchige; David P Young; Jean-Claude Jumas; Julia Y Chan

doi:10.1021/ic302805n

Investigation of Fe incorporation in LnCr2Al20 (Ln = La, Gd, Yb) with 57Fe Mössbauer and single crystal X-ray diffraction

Inorg Chem. 2013 May 6;52(9):5055-62. doi: 10.1021/ic302805n. Epub 2013 Apr 19.

Authors

LaRico J Treadwell¹, Jacob D McAlpin, Devin C Schmitt, Michael J Kangas, Moulay T Sougrati, Neel Haldolaarachchige, David P Young, Jean-Claude Jumas, Julia Y Chan

Affiliation

¹ Department of Chemistry, 232 Choppin Hall, Louisiana State University, Baton Rouge, Louisiana 70803, United States.

PMID: 23600622
DOI: 10.1021/ic302805n

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.