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Article

Antiferromagnetic Ordering and Transport Anomalies in Single-Crystalline CeAgAs2

1
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wrocław, Poland
2
Max-Planck-Institut für Chemische Physik Fester Stoffe, 01187 Dresden, Germany
*
Author to whom correspondence should be addressed.
Materials 2020, 13(17), 3865; https://doi.org/10.3390/ma13173865
Received: 30 July 2020 / Revised: 21 August 2020 / Accepted: 24 August 2020 / Published: 1 September 2020
(This article belongs to the Special Issue Magnetic Materials and Applications)
Single crystals of the ternary cerium arsenide CeAgAs2 were grown by chemical vapor transport. They were studied by means of x-ray diffraction, magnetization, heat capacity and electrical transport measurements. The experimental research was supplemented with electronic band structure calculations. The compound was confirmed to order antiferromagnetically at the Néel temperature of 4.9 K and to undergo metamagnetic transition in a field of 0.5 T at 1.72 K. The electrical resistivity shows distinct increase at low temperatures, which origin is discussed in terms of pseudo-gap formation in the density of states at the Fermi level and quantum corrections to the resistivity in the presence of atom disorder due to crystal structure imperfections. View Full-Text
Keywords: cerium pnictides; antiferromagnetism; metamagnetism; Kondo effect; pseudo-gap cerium pnictides; antiferromagnetism; metamagnetism; Kondo effect; pseudo-gap
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MDPI and ACS Style

Szlawska, M.; Gnida, D.; Ruszała, P.; Winiarski, M.J.; Samsel-Czekała, M.; Schmidt, M.; Grin, Y.; Kaczorowski, D. Antiferromagnetic Ordering and Transport Anomalies in Single-Crystalline CeAgAs2. Materials 2020, 13, 3865. https://doi.org/10.3390/ma13173865

AMA Style

Szlawska M, Gnida D, Ruszała P, Winiarski MJ, Samsel-Czekała M, Schmidt M, Grin Y, Kaczorowski D. Antiferromagnetic Ordering and Transport Anomalies in Single-Crystalline CeAgAs2. Materials. 2020; 13(17):3865. https://doi.org/10.3390/ma13173865

Chicago/Turabian Style

Szlawska, Maria, Daniel Gnida, Piotr Ruszała, Maciej J. Winiarski, Małgorzata Samsel-Czekała, Marcus Schmidt, Yuri Grin, and Dariusz Kaczorowski. 2020. "Antiferromagnetic Ordering and Transport Anomalies in Single-Crystalline CeAgAs2" Materials 13, no. 17: 3865. https://doi.org/10.3390/ma13173865

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