The Laser-Mossbauer Method

索雷斯库9800753这个项目是由杜肯大学的一位女科学家领导的，该大学主要是一所本科院校。研究的目的是了解和关联激光辐照处理过程中非晶态和其他介质中微结构相形核和长大的机制和控制因素。这项工作将增加我们对准分子激光加工各种材料的理解，包括玻璃铁磁体。该项目将建立一种方法，通过影响磁性材料晶体之间的磁耦合，将磁性材料的性质从软到硬进行调整。激光辐射与部分和完全晶化金属玻璃相互作用的基本效应将获得新的信息，并将通过结合应用传输和转换电子穆斯堡尔谱、直流磁滞回线和交流磁化率测量来研究控制热退火金属玻璃中磁性织构和相平衡的可能性。这项研究将使本科生和研究生参与新的研究活动，并将对杜肯大学的科学基础设施产生重大影响。该项目包括购买一台新的准分子激光器，这对拟议的研究至关重要。这个项目是由杜奎恩大学以本科生为主的教育环境中的一名女科学家完成的。这项研究采用了激光加工和穆斯堡尔谱学相结合的新方法，通过微结构加工来制造新材料。该项目包括购买一台新的准分子激光器，这对拟议的研究至关重要。激光脉冲引起织构材料的微结构变化，这改变了材料的磁性和其他性质。研究的重点将是非晶态材料，特别是信息存储行业感兴趣的非晶态磁性材料。该项目将包括本科生和研究生参与创新的研究项目，涉及材料制备、穆斯堡尔谱学和原位激光加工。***

Sorescu 9800753 This project is led by a female scientist at Duquesne University, a primarily undergraduate institution. The research goals are to understand and correlate the mechanisms and controlling factors of the nucleation and growth of micro-structural phases in amorphous and other media during laser irradiation treatment. The work will add to our understanding of excimer laser processing of a wide range of materials, including glassy ferromagnets. This project will establish methodology to tune magnetic materials properties from soft to hard, by affecting the magnetic coupling between their crystallites. New information on the fundamental effects underlying the interaction of laser radiation with partially and completely crystallized metallic glasses will be obtained, and the possibility of controlling the magnetic texture and phase equilibrium in thermally-annealed metallic glasses will be examined by combined application of transmission and conversion electron Mossbauer spectroscopy, dc hysteresis loops and ac magnetic susceptibility measurements. The research will involve undergraduate and graduate students in novel research activities and will have a significant impact on the scientific infrastructure at Duquesne University. The project includes the purchase of a new excimer laser that is essential for the proposed research. %%% This project is by a female scientist at the predominantly undergraduate educational environment at Duquesne University. The research employs a novel combination of laser processing and Mossbauer spectroscopy to produce new materials via micro- structural processing. The project includes the purchase of a new excimer laser that is essential for the proposed research. The laser pulse induces micro-structural changes in textured materials and this modifies the magnetic and other properties of the materials. The research will focus on amorphous materials, particularly amorphous magneti c materials of interest to the information storage industry. The project will involve both undergraduate and graduate students in innovative research projects dealing with materials preparation, Mossbauer spectroscopy, and in situ laser processing. ***