Investigation of the Nd2O3-Lu2O3-Sc2O3 phase diagram for the preparation of perovskite-type mixed crystals NdLu1-xScxO3

被引：4

作者：

Hirsch, Tamino ^{[1
,2
,3
]}

Guguschev, Christo ^{[1
,3
]}

Kwasniewski, Albert ^{[1
,3
]}

Ganschow, Steffen ^{[1
,3
]}

Klimm, Detlef ^{[1
,3
]}

机构：

[1] Leibniz Inst Kristallzuchtung, Max Born Str 2, D-12489 Berlin, Germany

[2] TU Bergakad Freiberg, Inst Mineral, Brennhausgasse 14, D-09596 Freiberg, Germany

[3] Tech Univ Berlin, Fak 6, Gustav Meyer Allee 25, D-13355 Berlin, Germany

来源：

JOURNAL OF CRYSTAL GROWTH | 2019年 / 505卷

关键词：

Phase diagrams; Solid solutions; Czochralski method; Oxides; Perovskites; Rare-earth compounds; HIGH-TEMPERATURE; DOUBLE OXIDES; SYSTEMS; GROWTH; LANTHANIDE; ND;

D O I：

10.1016/j.jcrysgro.2018.10.003

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Based on differential thermal analysis (DTA) and X-ray powder diffraction (XRD), a description of the Nd2O3-Lu2O3-Sc2O3 system was obtained by thermodynamic assessment. Four fields of primary crystallization could be identified; from melt compositions close to the Lu2O3-Sc2O3 edge, the rare-earth oxide C-phase crystallizes first which is stable down to room temperature. From Nd2O3 rich melts, the X-phase forms which is stable only at high temperatures. An additional field, where the alternative high-temperature phase H solidifies as primary product touches the Nd2O3-Lu2O3 edge of the concentration triangle. From melts close to the composition NdScO3, the P-phase (perovskite) can be crystallized and mixed crystals with second endmember NdLuO3 have been grown from the melt. Crystals of this mixed perovskite were grown by the micro-pulling-down and Czochralski methods.

引用

页码：38 / 43

页数：6

共 39 条

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