Creation of Quantum Size Titanium Oxide Doped with Hetero-Metal and Quantum Phenomena

为了使功能高度集成，需要在原子水平上控制异质金属氧化物量子点的制造工艺。我们在树枝状大分子中建立了逐步的异质金属组装，然后将树枝状大分子异质金属配合物转化为掺杂异质金属的量子尺寸的氧化钛。Eu掺杂的量子尺寸的钛氧化物显示出高的发光，尽管高掺杂水平的18%，因为Eu的自聚集被抑制的原子级控制。Fe的掺杂产生了具有室温界面磁性的铁氧化物-核/钛氧化物-壳结构，预计这是减小存储器尺寸的一种有前途的方法。

For functions to be highly integrated, a manufacturing process of hetero-metal oxide quantum dots controlled at atomic level is required. We established stepwise hetero-metal assembly in a dendrimer and then, transformed the dendrimer hetero-metal complexes into quantum size titanium oxides doped with hetero-metals. Eu-doped quantum size titanium oxides showed high luminescence in spite of high doping level of 18% because the self-aggregation of Eu is suppressed by the atomic level control. Doping of Fe produces the iron oxide-core/titanium oxide-shell structure exhibiting room temperature interface magnetism expected as a promising way to decrease memory size.