Double magnetic transitions and exotic field induced phase in the triangular lattice antiferromagnets Sr${}_3$Co(Nb,Ta)${}_2$O${}_9$

Surender Lal, Sebin J Sebastian, S. S. Islam +4

Two triangular lattice antiferromagnets Sr${}_3$Co(Nb,Ta)${}_2$O${}_9$ with an effective $j_{\mathrm{eff}}=1/2$ of Co${}^{2+}$ are synthesized and their magnetic properties are investigated via…