| 摘要 |
<p>Compound oxides of bismuth, strontium, calcium and copper of a specific metal content ratio can be prepared by refluxing an organic solvent solution containing alkoxides of bismuth, strontium, calcium and an organic acid salt, an alkoxy- beta -keto complex, beta -diketo complex or beta -ketoester complex in said specific metal content ratio, and thermally decomposing the refluxed reaction product.</p> |
