A Systematic Investigation of the Stability Field of Spinel-type Gallium Oxonitrides

被引:3
|
作者
Hering, Stefanie A. [2 ]
Zvoriste, Carmen E. [3 ]
Riedel, Ralf [3 ]
Kinski, Isabel [4 ]
Huppertz, Hubert [1 ]
机构
[1] Leopold Franzens Univ Innsbruck, Inst Allgemeine Anorgan & Theoret Chem, A-6020 Innsbruck, Austria
[2] Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany
[3] Tech Univ Darmstadt, D-64287 Darmstadt, Germany
[4] Fraunhofer Inst Keram Technol & Syst, D-01277 Dresden, Germany
关键词
High-pressure Synthesis; Gallium Oxonitride; Spinel Structure; Gallium Oxide; ALUMINUM OXYNITRIDE SPINEL; PRESSURE; ALON; TEMPERATURE; PATTERNS; DEVICES; PHASE; CELL;
D O I
10.1515/znb-2009-1004
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Over the last years, the synthesis and characterization of new spinel-type gallium oxonitrides were in the focus of several working groups. Our systematic investigation of the formation of the gallium oxonitride spinel phases was done under different experimental conditions and with various educts already used in former studies. The experiments took place under high-pressure/high-temperature conditions in a multianvil apparatus, starting from the end members wurtzite-structured GaN and beta-Ga2O3. Beside the variation of the molar ratio of the educts (w-GaN: beta-Ga2O3 = 9 : 1 - 1 : 9), different pressures (1 - 11.5 GPa), temperatures (500 - 1350 degrees C), and heating protocols were studied to localize the formation area of the spinel-type gallium oxonitrides. From these results, initial conditions of 2.5 - 11.5 GPa at temperatures between 1000 - 1300 degrees C can be stated as leading to the formation of Cubic, spinel-type gallium oxonitride phases. The temperature stability of the gallium oxonitride spinel phase as well as new results of the transformation of beta-Ga2O3 into alpha-Ga2O3 are reported.
引用
收藏
页码:1115 / 1126
页数:12
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