The effect of temperature on the features of the crystal and magnetic structures, as well as the magnetic properties of the solid solution of SrFe_10.8In_1.2O₁₉ hexaferrite was investigated. The appearance of ferroelectric properties was detected at room temperature, which contradicts the generally accepted opinion on the description of the crystal structure of hexaferrites within the framework of the centrosymmetric P6₃/mmc (No. 194) space group. The reasons of spontaneous polarization in solid solutions of hexaferrites remain controversial. No deviation from the collinear magnetic structure was found in the investigated temperature range from 1.5 to 350 K, while the thermal expansion of the unit cell was practically absent in the range from 1.5 to 50 K. The crystal structure of hexaferrites was considered in the framework of both centrosymmetric P6₃/mmc and non-centrosymmetric P6₃mc space groups, which allowed us to associate the emerging spontaneous polarization with unequal distortions of neighboring oxygen polyhedra.

研究了温度对SrFe _10.8在_1.2 O ₁₉六方铁氧体中固溶体的磁性能和晶体结构的影响。在室温下检测到铁电性能的出现，这与在中心对称P6 ₃框架内对六价铁氧体晶体结构描述的普遍看法相矛盾。/ mmc（编号194）空间组。六价铁氧体固溶体中自发极化的原因仍然存在争议。在研究温度为1.5至350 K的范围内，未发现共线磁性结构的偏差，而在1.5至50 K的范围内几乎没有晶胞的热膨胀。在框架中考虑了六价铁氧体的晶体结构中心对称的P6 ₃ / mmc和非中心对称的P6 ₃ mc空间组，这使我们能够将新兴的自发极化与相邻氧多面体的不等变形联系起来。