Investigations of new Heusler compounds with high spin-polarization

高自旋极化新霍斯勒化合物的研究

• 批准号: 60617961
• 负责人: Professor Dr. Burkard Hillebrands
• 金额: --
• 依托单位: Matematicko-fyzikální fakulta
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/60617961?language=en
• 关键词: Investigations; new; Heusler; compounds; spin

In the present proposal the Japanese partner will fabricate films of new Heusler compounds with particular emphasis on site order effects in single crystalline CosMnSi, Co2MnAl, CoaMnGe and Co2MnSii-xAlx, films, he will prepare magnetic tunneling junctions with Co2MnSii-xAlx, Co2MnGe electrodes, and he will measure the magnetic anisotropy, damping constant, and spin polarization. The German partner will investigate the exchange constants of these materials, he will investigate the magnetic anisotropy behavior and the magneto-optic properties using Brillouin light scattering and linear and quadratic MOKE magnetometry, and he will study the perspectives of modification and potential improvement of the materials using ion irradiation techniques. Via cooperation with the Research Unit 559 both partners have access to related activities in the Research Unit, such as numerical simulation and synthesis of new bulk materials, microscopic theory, spin-polarized (high energy) photoemission spectroscopy, magnetic x-ray spectroscopy, and two-photon-photoemission spectroscopy.

在本提案中，日本合作伙伴将制造新的Heusler化合物薄膜，特别强调单晶CosMnSi，Co2 MnAl，Co2 MnGe和Co2 MnSi 1-xAlx薄膜中的位置顺序效应，他将用Co2 MnSi 1-xAlx，Co2 MnGe电极制备磁隧道结，并测量磁各向异性，阻尼常数和自旋极化。德国合作伙伴将研究这些材料的交换常数，他将使用布里渊光散射和线性和二次MOKE磁力测量法研究磁各向异性行为和磁光特性，他将研究使用离子辐照技术对材料进行改性和潜在改进的前景。通过与559研究单元的合作，双方合作伙伴都可以参与研究单元的相关活动，例如新的块体材料的数值模拟和合成，微观理论，自旋极化（高能）光电子能谱，磁x射线光谱和双光子光电子能谱。