Combinatorial fabrication and characterization of ferromagnetic Ti-Co-O system
Combinatorial fabrication and characterization of ferromagnetic Ti-Co-O system
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DOI：
10.1016/s0169-4332(03)00906-1
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发表时间：
2004-02
影响因子：
6.7
通讯作者：
M. Murakami;Y. Matsumoto;M. Nagano;T. Hasegawa;M. Kawasaki;H. Koinuma
中科院分区：
文献类型：
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作者：
M. Murakami;Y. Matsumoto;M. Nagano;T. Hasegawa;M. Kawasaki;H. Koinuma
在LaSrAlO 4（001）（LASO）单晶衬底上，在550 ~ 750°C的温度梯度下生长了TiO 2-CoO二元组分扩散薄膜。在沉积过程中，环境被固定在5×10 - 5和5×10 - 7 Torr之间的氧气压力下。利用扫描超导量子干涉仪显微镜对组合库中的磁性进行高通量筛选。X射线衍射（XRD）被用来作为结构表征。从XRD测量中，观察到c轴取向的γ峰，直到Co含量约50%。在此Co含量附近，CoTiO 3峰强度最大，CoO峰出现在Co含量较高时。薄膜的磁化强度随沉积时氧分压的降低而增大。观察到磁畴结构的区域与薄膜导电区一致。
TiO2–CoO binary compositional spread thin films were grown on a LaSrAlO4(001) (LASO) single crystal substrate at temperatures gradient from 550 to 750°C. The ambient was fixed at an oxygen pressure between 5×10−5and 5×10−7Torr during the deposition. Scanning superconducting quantum interference device microscope was used as a high throughput screening of magnetic properties in the combinatorial libraries. X-ray diffraction (XRD) was used as structural characterization. From the XRD measurements, c-axis oriented anatase peaks were observed up to Co contents around 50%. Around this Co content, CoTiO3peaks have maximum intensity and CoO peak appeared at higher Co content. The film magnetization was increasing with decreasing of oxygen pressure at the deposition. The region, in which magnetic domain structure was observed, agrees well with film conductive region.