Abstract
We investigated the effect of Ni doping in a recently proposed quantum spin liquid (QSL) candidate Li4CuTeO6. We performed a comprehensive study on the structural and magnetic properties. We find that the anti-site disorder between Li+ and Cu2+ persists until 50% Ni doping in which Ni and Cu occupy different crystallographic sites. As a result, while Cu sits in both triangular and honeycomb layers in Li4CuTeO6, Ni forms only honeycomb layer in Li4NiTeO6 and Li4Cu0.5Ni0.5TeO6. Our magnetic susceptibility measurements show that the Weiss temperature decreases from -145.68 K in Li4CuTeO6 to -6.15 K in Li4NiTeO6 as Ni doping increases, and find no hint of magnetic ordering or freezing down to 1.8 K. Our analysis implies the existence of abundant low energy excitations in these materials.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
