Manganese spatial distribution in ZnO:Mn ceramics (0.1–5 at.% Mn) sintered at 1100 °C in air has been investigated using Electron paramagnetic resonance (EPR), micro-Raman and Diffuse reflectance spectroscopy. The Raman and EPR spectra show that concentration of Mn incorporated in ZnO grains decreases from the surface of ceramic sample to its depth. Mn distribution in ZnO grains is also inhomogeneous. The concentration of Mn on Zn site centers (Mn Zn 2+ ) evaluated from the EPR data is found to be lower than the Mn content in the charge indicating a large amount of Mn remains in the intergranular spaces. Thermostimulated Mn redistribution between the ZnO grain and the intergranural spaces have been observed under post sintering annealing. The influence of ZnO native donors on Mn Zn 2+ center formation is found. It is supposed that this effect is due to interaction of Mn with interstitial zinc. The impact of native donor concentration on c...

中文翻译：

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ZnO：Mn陶瓷中的锰分布：烧结工艺和热退火的影响

使用电子顺磁共振（EPR），微拉曼光谱和漫反射光谱法研究了在1100°C空气中烧结的ZnO：Mn陶瓷（锰含量为0.1-5 at。％）中锰的空间分布。拉曼光谱和EPR光谱表明，从陶瓷样品的表面到其深度，掺入ZnO晶粒中的Mn浓度会降低。ZnO晶粒中的Mn分布也不均匀。由EPR数据求出的Zn的中心位置（Mn Zn 2+）上的Mn浓度比电荷中的Mn含量低，表示大量的Mn残留在晶界空间中。在烧结后退火中观察到了ZnO晶粒和晶间空间之间的热刺激Mn再分布。发现了ZnO天然供体对Mn Zn 2+中心形成的影响。据推测，这种影响是由于Mn与间隙锌的相互作用。原生供体浓度对血友病的影响