High pressure sequence of Ba_3NiSb_2O_9 structural phases: new $S=1$ quantum spin-liquids based on Ni^{2+}

J. G. Cheng, G. Li, L. Balicas +4

By using a high pressure, high temperature (HPHT) technique, the antiferromagnetically ordered ($T_N$ = 13.5 K) 6H-A phase of Ba${}_3$NiSb${}_2$O${}_9$ was transformed into two new gaple…