High pressure synthesis and characterization of the pyrochlore Dy2Pt2O7: A new spin ice material

High pressure synthesis and characterization of the pyrochlore Dy₂Pt₂O₇: A new spin ice material

Cui Qi^{1, 2}, Cai Yun-Qi^{1, 2}, Li Xiang^{3, 4}, Dun Zhi-Ling^{5, 6}, Sun Pei-Jie^{1, 2, 7}, Zhou Jian-Shi³, Zhou Hai-Dong⁵, Cheng Jin-Guang^{1, 2, 7, †}

(a) Specific heat C(T) of Dy₂Pt₂O₇. The C(T) of isostructural, nonmagnetic Lu₂Pt₂O₇ was used as the lattice contribution C_lat. The magnetic contribution C_m was obtained by subtracting C_lat from the measured total C_total. The entropy S was evaluated by integrating C_m/T over the investigated temperature range. (b) Comparison of the magnetic specific heat C_m of Dy₂B₂O₇ (B = Sn, Pt, Ti, Ge) pyrochlores.