Fabrication of semiconductor hybrid structure with an arrangement of nanomagnets of aggregated magnetic elements and its application

2014 Fiscal Year Final Research Report

• Project/Area Number: 24310086
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: University of Tsukuba
• Principal Investigator: KURODA Shinji 筑波大学, 数理物質系, 教授 (40221949)
• Co-Investigator(Kenkyū-buntansha): KANAZAWA Ken 筑波大学, 数理物質系, 助教 (60455920)
• Co-Investigator(Renkei-kenkyūsha): MITOME Masanori 独立行政法人物質・材料研究機, 国際ナノアーキテクトニクス研究拠点, 研究員 (50344410) ; OFUCHI Hironori (財)高輝度光科学研究センター, 産業利用推進室, 研究員 (40312996)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: スピントロニクス / 希薄磁性半導体 / 磁性元素 / スピン偏極電子源

Outline of Final Research Achievements

We have studied the aggregation of magnetic elements in diluted magnetic semiconductors in which a magnetic element is incorporated in a host semiconductor. Using molecular beam epitaxy (MBE) method, we have grown DMSs in which a transition-metal (TM) element Cr or Fe is incorporated in a II-VI semiconductor ZnTe and have investigated the details of aggregation of the TM element and have clarified the correlation with the magnetic properties. In the both DMSs, it was found that the aggregation of the TM elements changes depending on the MBE growth condition, resulting in a noticeable change in the ferromagnetic properties.

Free Research Field

半導体物理