Study on CePtIn4 grown in a platelet-like morphology

Debarchan Das; Marek Daszkiewicz; Daniel Gnida; Alicja Hackemer; Mirosław Werwiński; Andrzej Szajek; Dariusz Kaczorowski

doi:10.1016/j.ssc.2019.113717

paper

Study on CePtIn4 grown in a platelet-like morphology

arXiv:1905.06398 · doi:10.1016/j.ssc.2019.113717

Abstract

We present the results of our comprehensive structural investigation performed on single crystals of CePtIn4 grown from In flux in a platelet-like morphology. They were found to crystalize in an orthorhombic structure having space group Cmcm (no. 63) with the lattice parameters a = 4.52175 (15) Å, b = 16.7777 (5) Å, and c = 7.3903 (2) Å. The unit cell volume of such crystals is slightly larger than that of previously reported needle-shaped single crystals of CePtIn4. This feature seems to influence the low-temperature physical properties of the compound, such as enhanced ordering temperature (TN = 2.3 K versus 1.65 K, observed before) along with a sharp drop in the electrical resistivity at TN (that was absent for the needle-like CePtIn4). In addition to the experimental data, we present the results of our ab-initio calculations of the electronic structure of CePtIn4 with the platelet-like morphology.

20 pages, 6 figures, 4 tables