Fabrication processing effects on the microstructure and morphology of erbium film * Shen Hua-Hai(申华海) a) , Peng Shu-Ming(彭述明) b) , Long Xing-Gui(龙兴贵) b) , Zhou Xiao-Song(周晓松) b) , Yang Li(杨 莉) a) , Liu Jin-Hua(刘锦华) b) , Sun Qing-Qiang(孙庆强) a) , and Zu Xiao-Tao(祖小涛) a) †