Title
Crystal growth, structure, and physical properties of Ln(Cu,Ga) 3-x(Ln=La-Nd, Eu; x≈0.2)
Document Type
Article
Publication Date
7-28-2009
Abstract
Single crystals of Ln(Cu,Ga) 13-x(Ln=La-Nd, Eu; x≈0.2) were grown using Ga flux and their structures determined by single-crystal X-ray diffraction. The Ln(Cu,Ga) 13-x (Ln=La-Nd, Eu; x≈0.2), adopting NaZn 13 structure type, crystallizes in the cubic Fm3̄c (No. 226) space group, with Z=8 and lattice parameters a≈11.8A° .Magnetic susceptibility and heat capacity measurements do not show any indication of long-range magnetic ordering down to 2 K for magnetic analogues. Metallic behavior is observed in the range of 2-300 K for each compound. A large positive magnetoresistance up to 154% at a field (μ )OH) of 9 T is also observed for Pr(Cu,Ga) 12.85(1). Most interestingly, the Pr analogue shows T 2 temperature-dependent resistivity and satisfies Kadowaki- Woods relation, which is indicative of heavy-fermion behavior. Here, we present the crystal structures and physical properties of Ln(Cu,Ga) 13-x (Ln=La-Nd, Eu; x≈0.2). © 2009 American Chemical Society.
Publication Source (Journal or Book title)
Chemistry of Materials
First Page
3072
Last Page
3078
Recommended Citation
Cho, J., Thomas, E., Nambu, Y., Capan, C., Karki, A., Young, D., Kuga, K., Nakatsuji, S., & Chan, J. (2009). Crystal growth, structure, and physical properties of Ln(Cu,Ga) 3-x(Ln=La-Nd, Eu; x≈0.2). Chemistry of Materials, 21 (14), 3072-3078. https://doi.org/10.1021/cm803297q