[20p-C302-1~12] 6.4 Thin films and New materials

[20p-C302-7] Fabrication of (111) oriented LaH_x films with various H contents by PLD

〇(D)Ziyang Cao¹, Takuto Soma¹, Akira Ohtomo¹ (1.Tokyo Tech., Dept. Chem. Sci. Eng.)

Keywords:Lanthanum hydride, PLD, Thin films

Lanthanum hydrides have recently attracted much attention due to the discovery of room temperature superconductivity in LaH_10+x and fast hydride ionic conduction in LaH_3-2xO_x. On the other hand, LaH_x (2 ≤ x ≤ 3) is known to change from a metal to an insulator as x increases. These properties have been studied in bulk polycrystals, and the key to single-crystallization of LaH_x is how to overcome the low decomposition temperature. In this study, we have attempted to synthesize LaH_x thin films with controlled hydrogen content by using the PLD method.