Successive magnetic phase transitions and multiferroicity in Spin-1 triangular lattice antiferromagnet Ba${}_3$NiNb${}_2$O${}_9$

J. Hwang, E. S. Choi, F. Ye +4

We report the magnetic and electric properties of Ba${}_3$NiNb${}_2$O${}_9$, which is a quasi-two-dimensional spin-1 triangular lattice antiferromagnet (TLAF) with trigonal structure. At…