Browsing by Author "Frontzek, MD"

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    Crystal structure and magnetic properties of the breathing kagome ising antiferromagnet Yb3Ni11Ge4.63
    (The Physical Society of Japan, 2020-07-31) Takahashi, M; Nawa, K; Okuyama, D; Nojiri, H; Frontzek, MD; Avdeev, M; Yoshida, M; Ueta, D; Yoshizawa, H; Sato, TJ
    We have investigated magnetic properties of the rare-earth based intermetallic compound Yb3Ni11Ge4.63 (YNG), where Yb3+ ions form a breathing-kagome lattice. Single-site 4f electron wavefunctions of the ground-state doublet are deduced from magnetization and heat capacity measurements. The Weiss temperatures are quite anisotropic as Θa = −0.01(2) K (H ∥ a) and Θc = −0.67(2) K (H ∥ c), indicating Ising-like spin–spin interactions dominating in this compound. Low-temperature neutron diffraction confirms absence of magnetic Bragg peaks down to 0.05 K, whereas enhancement of broad peaks below 0.8 K was observed, a signature of short-range spin correlations. Competing interactions on the breathing-kagome lattice would suppress a magnetic long-range order in YNG. ©2020 The Physical Society of Japan