居里常数（Curie constant）是一个和材料有关的参数，和物质磁化率随温度的变化有关。
测试了晶体的晶格常数、红外光谱和居里温度。
Crystal lattice constants, IR spectroscopy and Curie temperatures were tested.
随着测试频率的增加，测得的材料介电常数略有下降，而居里温度与温度系数基本维持不变。
Moreover, with the increase of the working frequency, the dielectric constants of the PST materials decreased, but the Curie temperature and temperature coefficient basically had no variation.
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