Nickel-Titanium double perovskite: A three-dimensional spin-1 Heisenberg antiferromagnet

Michael Karolak, Martin Edelmann, Giorgio Sangiovanni

The double perovskite ${\mathrm{La}}_2{\mathrm{NiTiO}}_6$ is identified as a three-dimensional $S=1$ quantum magnet. By means of Density Functional Theory we demonstrate that this material i…