RIMI: Process Simulation and Design of Magnetic Czochralski Bulk Crystal Growth

9550759蒙托亚新墨西哥州州立大学化学工程系提出一项计划，旨在培养少数族裔学生和教职员工的技术和专业技能。该研究计划的重点是开发经过验证的磁提拉法的工艺模拟模型，该工艺是生长大块晶体最常用的商业工艺。磁场稳定金属液相中的对流和湍流；直拉法通过产生几乎没有缺陷的均匀晶体而受益于这种提高的稳定性。与建模任务相结合的是开发对固-液系统的热力学和传输性质的可靠估计。此外，还将获得对该过程(尽管目前为非磁性过程)的完整实验理解，以验证该模型。在使用纯材料对实验设备进行充分表征后，该计划将开始研究仅通过薄膜生长成功生长的材料，如氮化镓，这是一种宽带隙半导体，当整合到二极管中时，能够发出可见的蓝光。一个成功的研究计划的结果将是将新的加工技术和新材料引入工业，以及创造新的方法来生产大量至关重要的半导体和陶瓷。将为少数民族学生和教师培训开发资源。少数族裔研究生和本科生将直接参与这项研究，与国家高磁场实验室的合作将鼓励发展职业发展的外部联系。结果的公布将增强RIMI计划和NMSU的声誉。计算设施和实验设备将被添加到国立墨尔本州立大学工程学院，这些设施将帮助L获得更多资助，以支持当前和未来的研究。这项提议中采用的理论工作的性质，工业感兴趣的结晶系统的数量，以及对磁场辅助材料加工的研究的缺乏，将使这一计划很好地维持到未来。***

9550759 Montoya The Chemical Engineering Department at New Mexico State University (NMSU) is proposing a program to develop the technical and professional skills of minority students and faculty. The focus of the research program is development of a validated process simulation model of the magnetic Czochralski process, the most frequently used commercial process for growing large bulk crystals. Magnetic fields stabilize convection and turbulent flow in the metallic liquid phase; the Czochralski process benefits form this increased stability by producing uniform crystals with few defects. Coupled to the modeling task is development of reliable estimates of the thermodynamic and transport properties of the solid-liquid system. Also, a complete experimental understanding of the process (albeit, the non-magnetic process at the current time) will be obtained to verify the model. After full characterization of the experimental apparatus using pure materials, this initiative will begin investigations of materials that have been successfully grown only by thin-film growth, such as gallium nitride, a wide-band-gap semiconductor which, when incorporated into a diode, is capable of emitting visible blue light. The outcome of a successful research program will be the introduction of new processing techniques and novel materials into industry, as well as creating new methods to grow large quantities of ildustrially important semiconductors and ceramics. Resources will be developed for minority student and faculty training. Minority graduate and undergraduate students will be directly involved with the research, and collaboration with the National High Magnetic Field Laboratory will encourage the development of external contacts for career development. Publication of results will strengthen the reputation of both the RIMI program and NMSU. Computing facilities and experimental equipment will be added to the NMSU College of Engineering, providing facilities that wil l aid in obtaining further grants to sustain current and future research. The nature of the theoretical work employed in this proposal, the number of crystalline systems that are of interest to industry, and the lack of research into magnetic-field assisted materials processing will sustain this program well into the future. ***