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

RIMI：磁性直拉法块状晶体生长的工艺模拟和设计

• 批准号: 9550759
• 负责人: Mark Montoya
• 金额: $ 35.86万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-10-01 至 1999-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9550759&HistoricalAwards=false
• 关键词: RIMI; Process; Simulation; Design; Magnetic

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. ***

9550759蒙托亚化学工程系在新墨西哥州州立大学（NMSU）提出了一项计划，以发展少数民族学生和教师的技术和专业技能。 该研究计划的重点是开发一个有效的过程模拟模型的磁性直拉工艺，最常用的商业过程中生长大块晶体。 磁场稳定了金属液相中的对流和湍流;直拉工艺通过产生具有很少缺陷的均匀晶体而受益于这种增加的稳定性。 耦合到建模任务是可靠的估计的固体-液体系统的热力学和传输特性的发展。 此外，一个完整的实验理解的过程（虽然，在目前的非磁性过程）将获得验证模型。 在对使用纯材料的实验装置进行全面表征之后，这一倡议将开始对仅通过薄膜生长成功生长的材料进行研究，例如氮化镓，这是一种宽带隙半导体，当将其纳入二极管时，能够发出可见的蓝光。 一个成功的研究项目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工业上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。 少数民族研究生和本科生将直接参与研究，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。 结果的公布将加强RIMI计划和NMSU的声誉。 计算设施和实验设备将被添加到工程的NMSU学院，提供设施，将在获得进一步的赠款，以维持当前和未来的研究援助。 该提案中采用的理论工作的性质，工业界感兴趣的晶体系统的数量，以及缺乏对磁场辅助材料加工的研究，将使该计划在未来得到很好的支持。 ***