Regensburg 2025 – scientific programme

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MA: Fachverband Magnetismus

MA 31: Poster II

MA 31.4: Poster

Wednesday, March 19, 2025, 17:00–19:30, P1

Comparative study on magenetical and structural properties Mn₃XC (X=Sn,Ga,In,Zn) antiperovskites — •Lennart Endler, Benedikt Eggert, Katharina Oleffs, Mehmet Acet, and Heiko Wende — Faculty of Physics and CENIDE, University of Duisburg-Essen

The family of Mn₃XC antiperovskites shows a wide variety of properties ranging from large magnetocaloric effects, giant magnetoresistance to negative thermal expansion [1], which makes them an interesting material class for researchers and industry. Starting with ternary compounds, we also investigate the effect of multiple elements on the X-site, as done for perovskite oxides in the past, revealing a correlation between Neel temperature and Goldschmidt tolerance factor and therefore the chosen elements [2]. For the chemical, structural and magnetic characterisation, we have used EDX, X-ray diffraction, magnetometry and if possible ¹¹⁹Sn Mössbauer spectroscopy. Based on the analysis of the ternary compounds prepared by solid state reaction, the foundation for a comparison to medium and high entropy Mn-antiperovskites is held to further explore and potentially control their properties.
We acknowledge the financial support through the Deutsche Forschungsgemeinschaft wihtin the framework of the CRC/TRR270 HoMMage (Project 405553726-TRR270).
[1] Y. Wang, Adv. Mater. 32, 1905007 (2020)
[2] R. Witte, Phys. Rev Mat. 3, 034406 (2019)

Keywords: Antiperovskites; Spectroscopy; Functional Materials