화학공학소재연구정보센터
Thin Solid Films, Vol.326, No.1-2, 51-55, 1998
Fabrication of high valence Sr(Fe0.65Co0.35)O-3 film by a pulsed laser ablation technique.
The formation of Sr(Fe0.65Co0.35)O-3 thin films was performed by pulsed laser deposition for the first time. The growth conditions were explained by the substrate temperature and oxygen pressure diagram by using thermodynamical equilibrium. An oxygen deficient phase was formed at the substrate temperature of 630 degrees C. At low substrate temperature of 500 degrees C, Sr(Fe0.65Co0.35)O-3 perovskite structure is formed. This result can be interpreted as the lower substrate temperature stabilizing the tetravalent ion thermodynamically. This Sr(Fe0.65Co0.35)O-3 film shows semiconductive-like behavior in resistivity with an activation energy of 0.15 eV and ferromagnetic property with Curie temperature of 370 K.