Magnetic phase diagram in three-dimensional triangular-lattice antiferromagnet Sr${}_3$CoTa${}_2$O${}_9$ with small easy-axis anisotropy

Iori Nishizawa, Nobuyuki Kurita, Hidekazu Tanaka +1

We report the results of low-temperature magnetization and specific heat measurements of Sr${}_3$CoTa${}_2$O${}_9$ powder, in which Co${}^{2+}$ ions with effective spin-1/2 form a uniform…