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要想制备出性能符合要求的材料,重要的一点就是要弄懂构成多相系统的各物相的物理参量与整个系统的有效参量之间的关系.尤其不可少的是根据对整个系统的测量结果,确定各单个物相的参量.对于整个陶瓷体中晶粒和晶界分布的这一模式,可以通过对样品施加周期变化的电、热、磁和其他激励,分别测定该样品的电、热、电磁和其他性能参量.以这种方法测量了半导体钛酸钡的晶粒、晶界的电阻率、介电常数、塞贝克系数与温度的关系.
It is important to understand the relationship between the physical parameters of the individual phases that make up the multiphase system and the effective parameters of the overall system in order to produce a material that meets the performance requirements.It is especially important to base the measurement on the entire system As a result, the parameters for each individual phase are determined.For this pattern of grain and grain boundary distribution throughout the ceramic body, the electrical, thermal, magnetic, and other excitation of the sample can be determined by applying periodic changes in electrical, thermal, magnetic and other stimuli to the sample, Thermal, electromagnetic and other performance parameters of the semiconductor barium titanate grain, grain boundary resistivity, dielectric constant, Seebeck coefficient and temperature relationship.