Transmission electron microscopy observation of the half-Heusler compound Ti0.5(Zr0.5Hf0.5)0.5NiSn0.998Sb0.002
Transmission electron microscopy observation of the half-Heusler compound Ti0.5(Zr0.5Hf0.5)0.5NiSn0.998Sb0.002
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DOI：
10.1016/j.scriptamat.2008.06.039
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发表时间：
2008-10
影响因子：
6
通讯作者：
T. Morimura;M. Hasaka;S. Kondo
中科院分区：
文献类型：
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作者：
T. Morimura;M. Hasaka;S. Kondo
采用X射线衍射(XRD)和透射电子显微镜(TEM)研究了半霍斯勒晶格的高性能热电化合物Ti{sub 0.5}(Zr{sub 0.5}Hf{sub 0.5}){sub 0.5}NiSn{sub 0.998}Sb{sub 0.002}。 XRD 图中的每个半赫斯勒峰在高角度侧都伴随有一个凸起。在明场 TEM 图像中观察到尺寸为几纳米的粒状区域。高分辨率 TEM 图像的傅里叶变换和逆傅里叶变换揭示了颗粒结构由半赫斯勒域组成，在第二最近的相邻原子之间有有序和无序。
The high-performance thermoelectric compound Ti{sub 0.5}(Zr{sub 0.5}Hf{sub 0.5}){sub 0.5}NiSn{sub 0.998}Sb{sub 0.002} with half-Heusler lattice was studied by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Each half-Heusler peak in the XRD pattern was accompanied by a bump at the high-angle side. Granular domains, a few nanometers in size, were observed in a bright-field TEM image. Fourier transformation and inverse Fourier transformation of the high-resolution TEM image revealed that the granular structure consists of half-Heusler domains with ordering and with disordering between second nearest neighbor atoms.