通过电子显微镜对SmMn2GeO7单晶微晶体进行结构表征。
Structural characterization of SmMn2GeO7 single microcrystals by electron microscopy.
作者信息
Juarez-Arellano E A, Ochoa J M, Bucio L, Reyes-Gasga J, Orozco E
机构信息
Instituto de Física, UNAM Apartado Postal 20-364, 01000 México DF, Mexico.
出版信息
Acta Crystallogr B. 2005 Feb;61(Pt 1):11-6. doi: 10.1107/S0108768104027673. Epub 2005 Jan 19.
Single microcrystals of the new compound samarium dimanganese germanium oxide, SmMn2GeO7, were grown using the flux method in a double spherical mirror furnace (DSMF). The micrometric crystals were observed and chemically analysed with scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDX). The structural characterization and chemical analysis of these crystals were also carried out using transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM), together with electron-energy-loss spectroscopy (EELS). We found that the new quaternary compound crystallizes in the orthorhombic system with the point group mmm (D2h), space group Immm (No. 71) and cell parameters a=8.30 (10), b=8.18 (10), c=8.22 (10) A and V=558.76 A3.
采用助熔剂法在双球面镜炉（DSMF）中生长出了新型化合物钐二锰锗氧化物（SmMn2GeO7）的单晶。利用扫描电子显微镜（SEM）和X射线能量色散光谱（EDX）对微米级晶体进行了观察和化学分析。还使用透射电子显微镜（TEM）、高分辨率透射电子显微镜（HRTEM）以及电子能量损失谱（EELS）对这些晶体进行了结构表征和化学分析。我们发现，这种新型四元化合物结晶为正交晶系，点群为mmm（D2h），空间群为Immm（编号71），晶胞参数a = 8.30（10）、b = 8.18（10）、c = 8.22（10）Å，V = 558.76 ų。
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