简要地介绍弛豫型铁电体的扩散相变和超顺电等理论研究的最新进展。
New progress in basic research of diffusion phase transitions and superparaelectricstate etc. on relaxor ferroelectrics are briefly presented.
本文采用一个简单模型，在仅计质量无序的情况下，由CPA方法讨论了超晶格中界面两侧原子的互扩散对其声子结构的影响。
With a simple model and only considering the mass disorder, we have discussed the effect of interface diffusion on the phonon structure of superlattices by means of CPA method.
讨论了一类具有超抛物型方程的反应扩散问题。
The reaction diffusion problems with ultra parabolic equations are considered.
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