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中文摘要：
运用XRD、SEM、HRTEM研究了Mn2O3掺杂对钛酸钡陶瓷结构的影响。随着烧结温度上升，发现Mn2O3掺杂钛酸钡样品的晶格常数在C轴方向增大。在烧结温度相同的情况下，Mn2O3掺杂能够抑制钛酸钡晶粒的生长，Mn件在烧结的过程中逐渐的固溶进入钛酸钡晶格。从结构角度出发，提出了Mn固溶进入晶格后，在其周边微区可能产生压应力，这是样品在还原气氛下烧结仍保持高电阻现象的原因之一。
英文摘要：
The effect of Mn2O3 dopant on the structure of barium titanate was investigated by XRD, SEM, HRTEM. It was found that tetragonality and lattice constant c of Mn2O3 doped barium titanate increase with increasing sintering temperature. Mn2O3 dopant can inhibit the grain growth of barium titanate at the same sintering temperature. Mn^3＋ will dissolve into barium titanate lattice during the sintering process,and form a great deal of defect and trigger rearrange of atoms around Mn^3＋. From the point of structure, we bring forward that stress is formed at micro-area around Mn^3＋ after it dissolves into the lattice, and it maybe one reason why the sample sintered in reducing atmosphere keeps high resistance.
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