[P] P9~P23 Electric/Magnetic Materials

[P20] Control of Ti Concentration and Characterization of Magnetic Properties in Pyrochlore-Type Oxide Bi₂Ti_xO_2x+3 Thin Films

○Ku Sawada¹, Reona Miyazaki¹, Takehiko Hihara¹ (1. Nagoya Institute of Technology)

Keywords:

Magnetic properties,Pyrochlore-type oxide,Sputtering

We studied the Ti-concentration control and magnetism of pyrochlore Bi₂Ti_xO_2x+3 films. Bi₂Ti₂O₇ phase was successfully formed via helicon sputtering and heat treatment. Its saturation magnetization increased as the Bi/Ti ratio approached 1. Furthermore, hole doping may enhance the magnetization.