PREPARATION OF Al2O3 POLYCRYSTALINE FILMS AND STUDY OF SPUTTERING TECHNIQUE
 
                 
                
                    
                                        
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Graphical Abstract
 
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Abstract
    High energy Ar+ ion beam sputtering aluminum target,the amorphous films deposited on SiO2 substrates are a mixture of Al and Al2O3.Annealing at between 800℃ and 1000℃,the amorphous films will oxidize,cystalize and finally turn into γ-Al2O3 and a-Al2O3.The sputtering technique has also been investigated.
 
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