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We report growth of various phase architectures of self - assembled BiFeO3 - CoFe2O4 ( BFO - CFO ) thin films on differently oriented SrTiO3 ( STO ) substrates .
 Chemical: BiFeO3; Chemical: CoFe2O4; Chemical: BFO; Chemical: CFO; Chemical: SrTiO3; Chemical: STO
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: BiFeO3; Chemical: CoFe2O4; Chemical: BFO; Chemical: CFO; Chemical: SrTiO3; Chemical: STO