Low-temperature behaviors of the dipolar magnet Dy₃Sb₃Zn₂O₁₄ with a strongly site-mixing disordered kagome lattice

Interesting behaviors may emerge in the magnetic frustrated materials with significant site-mixing disorder. We present the results of the structural, magnetic susceptibility, and specific heat measurements of Dy 3 Sb 3 Zn 2 O 14 with ∼20 % Dy/Zn site-mixing disorder, which results in either a diluted 2D triangular lattice, or an intermediate structure between the kagome and pyrochlore lattice. In addition to the sharp anomaly of the temperature dependence of specific heat at T ∼ 0.35 K, which was attributed to the emergent charge order state for the sample with less disorder, a broad peak at T ∼ 1.5 K, and a small hump below T ∼ 0.1 K are observed. The measured temperature dependence of specific heat and the Monte Carlo simulation suggest that the magnetic frustration persists despite of a strong site-mixing disorder.