Quantum spin state transitions in spin-1 equilateral triangular lattice antiferromagnet Na${}_2$BaNi(PO${}_4$)${}_2$

N. Li, Q. Huang, A. Brassington +13

We have grown single crystals of Na${}_2$BaNi(PO${}_4$)${}_2$, a new spin-1 equilateral triangular lattice antiferromagnet (ETLAF), and performed magnetic susceptibility, specific heat a…