Magnetic properties of RCuAl.sub.3./sub. (R = Pr and Nd) compounds

0517410 - FZÚ 2020 RIV NL eng J - Článek v odborném periodiku
Klicpera, M. - Fikáček, Jan - Vlášková, K. - Puente-Orench, I. - Diviš, M. - Javorský, P.
Magnetic properties of RCuAl₃ (R = Pr and Nd) compounds.
Journal of Alloys and Compounds. Roč. 781, Apr (2019), s. 1189-1197. ISSN 0925-8388. E-ISSN 1873-4669
Institucionální podpora: RVO:68378271
Klíčová slova: rare-earth based RCuAl₃ * single crysta * magnetization * specific heat * neutron diffraction * magnetic structure
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.650, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.jallcom.2018.12.077

Magnetic properties of PrCuAl3 and NdCuAl3 single crystals, adopting the tetragonal BaNiSn3-structuretype,are reported. Our magnetization and specific heat measurements revealed no magnetic ordering in PrCuAl3, while NdCuAl3 orders antiferromagnetically below TN ¼ 2.45 K. The paramagnetic regime was investigated for both analogues revealing (i) the a-axis as the easy direction of magnetization with (ii) a relatively high uniaxial anisotropy energy of 13.2 meV for PrCuAl3 compared to a smaller value of 4.7 meV for NdCuAl3. The measured data are well explained by rare-earth ground state multiplet splitting in crystal electric field. A powder neutron diffraction experiment confirmed PrCuAl3 to remain paramagnetic down to 1.5 K.
Trvalý link: http://hdl.handle.net/11104/0302721