Segregation of Mg in Zn_{1?span style='font-style: italic'>x}Mg_xO single crystals grown from the melt

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• 作者：Detlev Schulz  ; ;   ; ^{dschulz@ikz-berlin.de} ; Rainer Bertram ; Detlef Klimm ; Tobias Schulz ; Elvira Thiede
• 关键词：A1. Phase equilibria ; A2. Bridgman technique ; B1. Oxides ; B2. Semiconducting II&ndash ; VI materials
• 刊名：Journal of Crystal Growth
• 出版年：2011
• 出版时间：1 November 2011
• 年：2011
• 卷：334
• 期：1
• 页码：118-121
• 全文大小：409 K

文摘

Solid solutions between zinc oxide and magnesium oxide containing up to 4 at. % Mg were grown from the melt using a modified Bridgman technique. Chemical analysis (ICP-OES) and photoluminescence (PL) measurements revealed that the Mg concentration in the melt is larger compared with the starting material. This observation contradicts the commonly accepted assumption, that the ZnO¨CMgO phase diagram is of eutectic type. Peritectic melting of Zn-rich Zn_1?i>xMg_xO can explain the new experimental results, and a new ZnO¨CMgO phase diagram is proposed. Furthermore a distribution coefficient for Mg of has been determined.