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學(xué)海無涯t鐵蟲 (初入文壇)
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[交流]
【求助】摻Er3+,Li+到Y(jié)3Al5O12中形成各種空缺的機(jī)理求解釋 已有1人參與
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摻Er3+,Li+到Y(jié)3Al5O12中,為什么有下述變化: When the concentration of Li+ ions is below 7 mol%, substituting Y3+ ions with Li+ ions can induce oxygen vacancy due to charge compensation 然后濃度增大時(shí),有: for higher concentrations of Li+, the substitutional site and the interstitial site Li+ ions coexist in the host. These interstitial Li+ ions would induce the yttrium vacancies so there are four different types of defects around the Er3+ ions 為什么取代的Li+形成氧空缺,空隙的Li+將導(dǎo)致釔空缺? |
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