什么是氧空位_氧空位產(chǎn)生的原因_高價態(tài)摻雜能否引入氧空位
本文關(guān)鍵詞:氧空位,由筆耕文化傳播整理發(fā)布。
It doesn't make sense if only concerning charge neutrality. And the real site Cr occupy should be taken into consideration. As for the forming mechanism of O vacancy, it depends on your fabrication process. 甯屾湜鏈夋墍甯姪
兩個Cr(+3)替換了兩個Ti(+4),然后為了滿足電荷守恒,一個氧原子脫離晶格留下2個電子,,這樣就達到了電荷守恒,具體的查一下SrTiO3的晶包結(jié)構(gòu)。
你不摻雜也會有氧空位,高價摻雜其實和引入氧空位沒有直接關(guān)系,有時反倒會抑制氧空位產(chǎn)生,因為價位變高,意味著會失去更多的電子,而在你的材料中,只有氧是得到電子的,所以一定程度上摻雜會讓氧更難失去,如果你想引入氧空位,可以試試在一些還原性的氣體中進行試驗
: Originally posted by learn_living at 2015-08-11 22:57:42
It doesn't make sense if only concerning charge neutrality. And the real site Cr occupy should be taken into consideration. As for the forming mechanism of O vacancy, it depends on your fabrication p ...
: Originally posted by 童錢1990 at 2015-08-13 17:27:46
兩個Cr(+3)替換了兩個Ti(+4),然后為了滿足電荷守恒,一個氧原子脫離晶格留下2個電子,這樣就達到了電荷守恒,具體的查一下SrTiO3的晶包結(jié)構(gòu)。
本文關(guān)鍵詞:氧空位,由筆耕文化傳播整理發(fā)布。
本文編號:100184
本文鏈接:http://sikaile.net/wenshubaike/gongguanliyi/100184.html