Self-Assembled and Modulated Domain Epitaxial Oxide Heterostructures

9633638 Roytburd这个理论与实验相结合的研究项目旨在对外延系统中的应变控制结构调制（合作订购）进行严格的理论理解和实验验证。 在金属氧化物，如钙钛矿的相干约束条件下的固态转变的基本方面将进行研究，以了解转换的机制和动力学参数，并相对于开发新的路线，横向调制域和异质结构和超晶格层内的异质相微结构的设计和实现。 我们将探讨超晶格层间横向调制的相关性及三维超晶格的可能性。 固-固相变中调制结构演化的热力学和动力学将特别在铁电、铁弹和铁磁转变中进行研究。该项目是多学科的，将基础材料理论和实验合成与加工研究与先进的表征工具和分析方法相结合，以解决技术相关性和高潜在回报的热门领域的前沿问题。 该研究将为先进电子器件和集成电路的几个方面提供基础材料科学知识。 从该研究项目中获得的知识和理解预计将通过提供基本理解和设计和生产改进材料和材料组合的基础，以一般方式提高先进器件和电路的性能。 该计划的一个重要特点是通过在一个基本和技术上重要的领域对学生进行培训来整合研究和教育。***

9633638 Roytburd This combined theory and experiment research project aims for a rigorous theoretical understanding and experimental verification of strain controlled structural modulation(cooperative ordering) in epitaxial systems. Fundamental aspects of solid state transformation under coherently constrained conditions in metal oxides such as perovskites will be studied with respect to understanding the mechanisms and kinetic parameters of the transformations, and with respect to developing new routes to the design and realization of transversely modulated domain and heterophase microstructures inside heterostructure and superlattice layers. The correlation of transversal modulations in layers of superlattices and possibility of 3-dimensional superlattices will be explored. The thermodynamics and kinetics of the evolution of modulated structures in solid-solid phase transformations will be studied specifically in ferroelectric, ferroelastic, and ferromagnetic transformations. %%% The project is multidisciplinary combining fundamental materials theory and experimental synthesis and processing studies with advanced characterization tools and analysis methods to address forefront issues in a topical area of technological relevance and high potential payoff. The research will contribute basic materials science knowledge at a fundamental level to several aspects of advanced electronic devices and integrated circuitry. The knowledge and understanding gained from this research project is expected to contribute in a general way to improving the performance of advanced devices and circuits by providing a fundamental understanding and a basis for designing and producing improved materials, and materials combinations. An important feature of the program is the integration of research and education through the training of students in a fundamentally and technologically significant area. ***