種々の雰囲気におけるBi2Sr2CaCu2Oy単結晶表面の加熱処理効果
1999 年 42 巻 3 号 p. 171-174
詳細
1999 年 42 巻 3 号 p. 171-174
We prepared Bi2Sr2CaCu2Oy (BSCCO) single crystals by a self flux method and heated them in air, Ar gas and O2 gas. Then, we investigated their surface compositions and chemical bond natures of constituent elements by the X-ray photoelectron spectroscopy (XPS). From the results, we found that the carbon and the impurity oxygen on the BSCCO single crystal surfaces were efficiently removed by the heat-treatments in air and O2 gas, and that the chemical bond natures of Cu, Sr and O did not change.
