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MA: Fachverband Magnetismus

MA 19: Magnetic Materials III

MA 19.5: Talk

Tuesday, March 8, 2016, 12:30–12:45, H31

Interplay of structure and magnetism in frustrated intermetallic AFe₄X₂ systems — •Inga Kraft^1,2, Katharina Weber^1,2, Christoph Bergmann¹, Nandang Mufti¹, Til Goltz², Hans-Henning Klauss², Christoph Geibel¹, and Helge Rosner¹ — ¹Max Planck Intitute for Chemical Physics of Solids, Dresden — ²Technical University of Dresden

Due to their complex and versatile behavior frustrated systems present a great experimental and theoretical challenges. Even slight perturbations induce instabilities in such systems and prompt the emergence of unusual phenomena. The intermetallic AFe₄X₂ compounds (A=Sc,Y,Lu,Zr; X=Si,Ge) are suggested to cover the whole regime from frustrated AFM order up to an AFM quantum critical point. Our DFT calculations exhibit a strong interplay of structure and magnetism. We discuss the influence of the A and X site atoms on the strength of magnetic interactions and the size of structural distortion.