U.S.-Czech Materials Research: Optimization of Magneto-Optical Nanostructures for High Frequency Applications

这个美国-捷克研究项目涉及科罗拉多大学科罗拉多斯普林斯分校的 Radek Lopusnik、Zbigniew Celinski 和 Robert Camley 以及布拉格查尔斯大学的 Stefan Visnovsky。 他们的目标是优化用于高频磁光探测和采样应用的磁性多层结构。 此次国际合作受益于美国团队在磁化动力学和高质量样品制备方面的专业知识，并得到捷克合作伙伴在磁光光谱方面的优势的补充。美国和捷克团队将共同通过磁光（MO）光谱、铁磁共振、光散射和时间分辨磁光研究一系列多层结构。 他们打算通过使用开发的 MO 响应模型来提取光学和磁光常数，以建议具有高磁光品质因数和高震前频率的结构。 在研究了多个磁性层的影响、理论计算并尝试生长有前途的纳米结构之后，研究人员希望继续努力在悬臂上沉积最佳结构并进行测试测量。 如果成功，结果可能适用于微波辐射场的检测，从而提高识别印刷电路板和集成电路上隐藏的电磁干扰源的能力。该凝聚态物理项目通过使美国和中欧的专家能够在共同感兴趣和能力强的领域结合互补人才并共享研究资源，实现了推进科学知识的计划目标。 更广泛的影响包括通过在捷克机构的工作和直接参与该项目的磁光方法将美国学生引入国际材料研究界。

This U.S.-Czech research project involves Radek Lopusnik, Zbigniew Celinski, and Robert Camley of the University of Colorado at Colorado Springs and Stefan Visnovsky of Charles University, Prague. Their goal is to optimize magnetic multilayered structures for applications in high frequency magneto-optical probing and sampling. The international collaboration benefits from the expertise of the U.S. group in magnetization dynamics and quality sample preparation and is complemented by the Czech partners' strengths in magneto-optical spectroscopy.Together the U.S.-Czech team will investigate a series of multilayered structures by means of magneto-optical (MO) spectroscopy, ferromagnetic resonance, light scattering and time-resolved magneto-optics. They intend to extract optical and magneto optical constants by using a developed model for MO response to suggest structures with both a high magneto-optical figure of merit and high presessional frequency. After studies of the influences of multiple magnetic layers, theoretical calculations, and attempts to grow promising nanostructures, the researchers hope proceed with efforts to deposit the best structure on a cantilever and perform test measurements. If successful, results may be applicable to detection of microwave radiated fields which could lead to improved ability to identify hidden electromagnetic interference sources on printed circuit boards and integrated circuits. This project in condensed matter physics fulfills the program objective of advancing scientific knowledge by enabling experts in the United States and Central Europe to combine complementary talents and share research resources in areas of strong mutual interest and competence. Broader impacts include the introduction of U.S. students to the international materials research community through work at the Czech institution and direct involvement in the project's magneto-optical methods.