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Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 17: Poster Session Correlated Electrons 1

TT 17.3: Poster

Montag, 16. März 2020, 15:00–19:00, P2/EG

Crystal growth and characterization of CeCo2P2 and EuFe2P2 — •Thanh Duc Nguyen, Johannes Hellwig, Marius Peters, Kristin Kliemt, and Cornelius Krellner — Physikalisches Institut, Goethe-Universität Frankfurt, 60438 Frankfurt/Main, Germany

The ternary phosphides CeCo2P2 and EuFe2P2 are compounds that belong to the ’122’-systems crystallizing in the ThCr2Si2 structure type. CeCo2P2 is an antiferromagnet due to the ordering of cobalt atoms at TN = 440 K [1]. EuFe2P2 is a ferromagnet due to the ordering of divalent europium atoms with a Curie temperature of TC = 27.5 K [3]. We synthesized both compounds in tin-flux using either quartz or niobium ampoules [2]. In this way, large platelet-like CeCo2P2 single crystals of several mm lateral size were created. For the europium system the crystals are smaller. Electrical transport measurements and a magnetic characterization were done for both compounds. In addition, CeCo2P2 is a candidate for the investigation of its surface states by ARPES.

[1] Yong Tian et al., Physica B: Condensed Matter, 512, 75, (2017)

[2] Kliemt et al., Cryst. Res. Technol., 1900116, (2019)

[3] E. Mörsen et al., Journal of Physics and Chemistry of Solids, 49, 7, (1987)

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