Magnetic and thermal properties of RCu9In2 (R=La, Ce, Pr, Nd, Sm and Eu) compounds

• Published in: Journal of magnetism and magnetic materials Vol. 410; pp. 156 - 164
• Main Authors: Baran, S., Przewoźnik, J., Kalychak, Ya. M., Tyvanchuk, Yu, Szytuła, A.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-07-2016
• Subjects: Crystal structure; Magnetic susceptibility; Magnetization; Rare earth intermetallics; Specific heat; Specific heat; Rare earth intermetallics; Magnetization; Crystal structure; Magnetic susceptibility
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2016.03.009

The RCu9In2 intermetallics with R=La, Ce, Pr, Nd, Sm, Eu have been synthesized and characterized with regards to their crystal structure as well as magnetic and thermal properties. The compounds have tetragonal structure of the YNi9In2-type (space group P4/mbm). Except for LaCu8.25In2.75, they exhibit localized magnetism due to the presence of magnetic moments on the respective trivalent rare-earth ions. The Nd-, Sm- and Eu- based compounds order antiferromagnetically below 4.6, 11.0 and 23.2K, respectively.
•Physical properties of RCu9In2 (R=La–Nd, Sm, Eu) are reported for the first time.•The compounds crystallize in the tetragonal YNi9In2-type structure.•Except for LaCu8.25In2.75, they exhibit localized magnetism.•The Nd-, Sm- and Eu- based compounds order antiferromagnetically at low temperatures.