Grüneisen rule in cubic rare-earth cage systems : the examples of LaB${}_6$ and LaPt${}_4$Ge${}_{12}$

Mehdi Amara, Christine Opagiste, Natalya Yu. Shitsevalova

In some intermetallic compounds, the crystallographic structure allows for an unusual latitude of movement of lanthanide ions inside so-called cages. Examples of such magnetic cage…