期刊
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
卷 42, 期 2A, 页码 L105-L107出版社
INST PURE APPLIED PHYSICS
DOI: 10.1143/JJAP.42.L105
关键词
magnetic semiconductor; anatase TiO2; Co; magneto-optical effect; ferromagnetism; oxide; thin film; laser molecular beam epitaxy
Magneto-optical spectroscopy of a transparent ferromagnetic semiconductor, anatase TiO2 doped with Co, is carried out at room temperature. A large magneto-optical response with ferromagnetic field dependence is observed throughout from ultraviolet to visible range and increases with increasing Co content or carrier concentration. The magnitude of magnetic circular dichroism (MCD) per unit thickness has a peak around the absorption edge such a huge value of similar to10400 deg/cm at 3.57 eV for a 10 mol% Co-doped specimen. Although the results are not sufficient to prove that the ferromagnetism is in the ordinary framework of diluted magnetic semiconductors, the coexistence of Co impurity and mobile carrier is shown to transform the band structure of host TiO2 to generate ferromagnetism.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据