Observation of anisotropic thermal expansion and Jahn-Teller effect in double perovskites Sr${}_{2-x}$La${}_x$CoNbO${}_6$ using neutron diffraction

Ajay Kumar, Anil Jain, S. M. Yusuf +1

We use temperature dependent neutron powder diffraction (NPD) to investigate the structural changes and magnetic interactions in double perovskite Sr${}_{2-x}$La${}_x$CoNbO${}_6$ ($x=$ 0…