Cool-SPS stabilization and sintering of thermally fragile, potentially magnetoelectric, NH4FeP2O7

Thomas Herisson de Beauvoir (1) , Anna Sangregorio (1) , A. Bertrand (1) , Christophe Payen (2) , Dominique Michau (1) , U-Chan Chung (1) , Michaël Josse (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux
2 IMN - Institut des Matériaux Jean Rouxel

Cool-SPS conditions (low temperature/high pressure) can be used to densify materials with limited thermodynamical stability, due to low temperature phase transition, melting, decomposition… We recently demonstrated the potential of SPS for the stabilization and densification of diversified materials at very low temperatures. Here we report the sintering of a potentially magnetoelectric pyrophosphate with low temperature decomposition. Characterization of its magnetic properties are presented, and dielectric/magnetoelectric characterization could also be performed thanks to the high densification obtained at temperatures as low as 200 °C.

Mots clés: Fragile ferroic; SPS; Sintering; Ceramics

Domaines: Matériaux

Thomas Herisson de Beauvoir, Anna Sangregorio, A. Bertrand, Christophe Payen, Dominique Michau, et al.. Cool-SPS stabilization and sintering of thermally fragile, potentially magnetoelectric, NH4FeP2O7. Ceramics International, 2019, 45 (7B), pp.9674-9678. ⟨10.1016/j.ceramint.2018.12.103⟩. ⟨hal-02078595⟩