Berlin 2024 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.44: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster C
Magnetic properties of the spin-1/2 zigzag chain lattice antiferromagnet: CaCuV2O7 — •Koushik Chakraborty1, Aditi Agrawal1, Isha Isha1, Suman Karmakar1, R. Rawat1, M. Isobe2, and Arvind Kumar Yogi1 — 1UGC-DAE Consortium for Scientific Research, University Campus, Khandwa Road, Indore-452001, India — 2Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany
We report the magnetic properties of a new CuO4 plaquette spin-1/2 zigzag chain compound CaCuV2O7, which ordered antiferromagnetically (AFM) below TN = 2.4 K, and it reveals the 3d characteristics of a nearly divalent Cu2+ ion moment obtained from our Curie-Weiss (CW) magnetic susceptibility analysis. The effective magnetic moment µeff is calculated to be 1.83 (2) µB, which is in good agreement with the Cu2+ ions for a S = 1/2 and a g value of 2 (free-electron g-value). The negative Weiss constant θCW = -18.9 K, as found to be from susceptibility CW fit, suggests that the dominant interactions between Cu+2 ions are of AFM. Interestingly, it is also found that the application of the applied magnetic field at H = 9T suppresses the magnetic ordering.
Keywords: Magnetism; Antiferromagnetism; low-dimensional magnets; One-dimensional chains; Frustrated lattice