Temperature-tunable multiple dielectric switch in hybrid rare-earth perovskites regulated by hierarchical guest dynamics, lanthanide contraction and doping

Here we report a unique class of cage-like hybrid rare-earth perovskites, (i-PrNHMe 2 ) 2 [RbLn(NO 3 ) 6 ] (Ln = La, Ce, Nd or Sm), capable of functioning as temperature-responsive multiple dielectric switches.