Cryogenic magnetic properties and magnetocaloric responses in Gd11GeP3O26 oxide

In this work, we prepared the single-phased Gd 11 GeP 3 O 26 oxide by solid-phase reaction method and experimentally characterized its structure, magnetic and MC properties. The Gd 11 GeP 3 O 26 oxide is found to be crystallized in triclinic structure ( P 1 space group) and its constituting elements show excellent homogeneity and with the valence state of Gd 3+ , Ge 4+ , P 5+ and O 2− , respectively. The Gd 11 GeP 3 O 26 oxide orders magnetically around 2.78 K and possesses remarkable cryogenic MC responses. The maximum magnetic entropy changes/temperature-averaged magnetic entropy change (5 K-lift) and relative cooling powers in Gd 11 GeP 3 O 26 oxide are 32/29.4 J/kgK and 404.4 J/kg under magnetic field variation 0–7 T, respectively. These MC parameters are comparable to most acquired RE -based magnetic oxides suitable for cryogenic application, making present Gd 11 GeP 3 O 26 oxide of interest for magnetic cooling application.