CePt2Al2: Structural and Bulk Properties

0540268 - ÚFP 2021 RIV US eng J - Journal Article
Doležal, P. - Duverger-Nédellec, E. - Mičková, Z. - Proschek, P. - Illková, Ksenia - Daniš, S. - Bartha, K. - Javorský, P.
CePt2Al2: Structural and Bulk Properties.
Inorganic Chemistry. Roč. 59, č. 17 (2020), s. 12263-12275. ISSN 0020-1669. E-ISSN 1520-510X
Institutional support: RVO:61389021
Keywords : CePt2Al2 * intermetallic compounds
OECD category: Inorganic and nuclear chemistry
Impact factor: 5.165, year: 2020
Method of publishing: Limited access
https://pubs.acs.org/doi/abs/10.1021/acs.inorgchem.0c01292

This work is focused on the structural and physical properties of CePt2Al2, an intermetallic compound. At room temperature, the modulated orthorhombic structure Cmme(a00)000, with q→= (0.481, 0, 0) has been determined by single-crystal X-ray diffraction supplemented by dependence of lattice parameters above room temperature for which the X-ray powder diffraction was used. The compound undergoes a structural transition to a tetragonal structure above room temperature. This transition exhibits 50 °C hysteresis and creates a domain structure in the sample. The magnetic behavior has been studied by specific heat, magnetization, and transport measurements in the temperature range between 0.5 and 300 K. Specific heat and susceptibility shows an antiferromagnetic order below 2 K. On the basis of electrical resistivity and other bulk measurements, CePt2Al2 can be considered a Kondo lattice material. The presence of a modulated crystal structure opens the possibility of a charge density wave state in CePt2Al2 as observed for (Re)Pt2Si2.
Permanent Link: http://hdl.handle.net/11104/0317903