Batson P E, Chisholm M F
IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598.
J Electron Microsc Tech. 1988 Mar;8(3):311-5. doi: 10.1002/jemt.1060080310.
We have obtained the electron-energy-loss spectra below 1,000 eV for YBa2Cu3O7-delta. The spectra show contributions from all elemental constituents, although the Y-signal is very weak owing to its small concentration. The low-loss region and the Ba-core losses are very similar to those obtained for BaO. The Cu absorption is similar to that seen in CuO with minor differences relating to Cu concentration and anisotropy. The oxygen 1s absorption has a shape that is quite different from that obtained in CuO and shows striking orientational anisotropy. Radiation damage in the microscope is a problem and leads to changes in the shape of the oxygen edge.
我们已获得YBa2Cu3O7-δ在1000 eV以下的电子能量损失谱。尽管由于Y的浓度较低，其信号非常微弱，但光谱显示了所有元素成分的贡献。低损失区域和Ba核损失与在BaO中获得的非常相似。Cu的吸收与在CuO中观察到的相似，只是在Cu浓度和各向异性方面存在细微差异。氧1s吸收的形状与在CuO中获得的形状有很大不同，并显示出明显的取向各向异性。显微镜中的辐射损伤是一个问题，会导致氧边缘形状发生变化。
