Segregation of Mg in Zn1-xMgxO single crystals grown from the melt

被引：3

作者：

Schulz, Detlev ^{[1
]}

Bertram, Rainer ^{[1
]}

Klimm, Detlef ^{[1
]}

Schulz, Tobias ^{[1
]}

Thiede, Elvira ^{[1
]}

机构：

[1] Leibniz Inst Crystal Growth, D-12489 Berlin, Germany

来源：

JOURNAL OF CRYSTAL GROWTH | 2011年 / 334卷 / 01期

关键词：

Phase equilibria; Bridgman technique; Oxides; Semiconducting II-VI materials; ZNO; ALLOY;

D O I：

10.1016/j.jcrysgro.2011.08.036

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

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-MgO phase diagram is of eutectic type. Peritectic melting of Zn-rich Zn1-xMgxO can explain the new experimental results, and a new ZnO-MgO phase diagram is proposed. Furthermore a distribution coefficient for Mg of k(eff) = 1.32 ... 1.4 has been determined. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：118 / 121

页数：4

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