Berlin 2024 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 80: Correlated Electrons: Poster

TT 80.2: Poster

Donnerstag, 21. März 2024, 15:00–18:00, Poster E

Growth and characterisation of PrCo₂P₂ and NdCo₂P₂ single crystals — •Benjamin Helmer, Fabian Fiedler, Kristin Kliemt, and Cornelius Krellner — Physikalisches Institut, Goethe-Universität Frankfurt, 60438 Frankfurt am Main, Germany

Recently, long-lived spin waves in the THz regime were discovered in the metallic antiferromagnet CeCo₂P₂ [1], resulting from an intricate interplay of structural and magnetic degrees of freedom in this compound. Therefore it is of current interest to investigate similar compounds in the LnCo₂P₂ series. Here, we present the crystal growth of (Pr,Nd)Co₂P₂ in tin flux, using temperatures of up to 1400^∘C and a vertical temperature gradient, and the corresponding structural and physical characterization.

The structural characterization is performed by powder x-ray diffractometry, energy-dispersive x-ray spectroscopy and Laue diffraction. Magnetic properties of these systems, arising from the combination of the 4f-moments of (Pr,Nd)³⁺-ions and the 3d-moments of Co³⁺, are investigated by measurements of magnetization and heat capacity.

[1] G. Poelchen et al., Nat. Commun. 14, 5422 (2023)

Keywords: Crystal growth; LnCo2P2