The effect of ${\mathrm{E}\mathrm{r}}^{3+}$ substitution on the physical properties of $\mathrm{S}\mathrm{m}\mathrm{F}\mathrm{e}{\mathrm{O}}_3$ was studied through magnetic and electrical measurements. The X-ray diffraction patterns of ${\mathrm{S}\mathrm{m}}_{1-\mathrm{x}}{\mathrm{E}\mathrm{r}}_{\mathrm{x}}\mathrm{F}\mathrm{e}{\mathrm{O}}_3$ samples showed that the lattice constants decrease with increasing $\mathrm{E}\mathrm{r}$ content. As a result, the distortion of $\mathrm{E}\mathrm{r}$ -doped $\mathrm{S}\mathrm{m}\mathrm{F}\mathrm{e}{\mathrm{O}}_3$became significant. The magnetic hysteresis loops of samples indicate that the antiferromagnetic trend increases with $\mathrm{E}\mathrm{r}$ concentration. The anomaly in Ac susceptibility ($\chi$) and dielectric constant curves for ${\mathrm{S}\mathrm{m}}_{1-\mathrm{x}}{\mathrm{E}\mathrm{r}}_{\mathrm{x}}\mathrm{F}\mathrm{e}{\mathrm{O}}_3$ provided evidence for occurring spin reorientation transition (SRT) in these compounds and are also observed the gradual decrease in SR temperature with increasing ${\mathrm{E}\mathrm{r}}^{3+}$ions. Furthermore, the electrical measurements exhibited a considerable enhancement in the dielectric constant. ${\mathrm{S}\mathrm{m}}_{0.3}{\mathrm{E}\mathrm{r}}_{0.7}\mathrm{F}\mathrm{e}{\mathrm{O}}_3$ is the only compound that presented a colossal dielectric constant (CDC) (10³) at room temperature which is attributed to relaxor-ferroelectrics. Likewise, the appearance of magnetic and ferroelectric hysteresis loops indicated the coexistence of magnetism and ferroelectricity.

的效果 ${\mathrm{乙}\mathrm{r}}^{3+}$ 物理性质的替代 $\mathrm{秒}\mathrm{米}\mathrm{F}\mathrm{电子}{\mathrm{哦}}_3$通过磁和电测量进行了研究。X射线衍射图谱${\mathrm{秒}\mathrm{米}}_{1——\mathrm{X}}{\mathrm{乙}\mathrm{r}}_{\mathrm{X}}\mathrm{F}\mathrm{电子}{\mathrm{哦}}_3$ 样品表明晶格常数随着增加 $\mathrm{乙}\mathrm{r}$内容。结果，畸变$\mathrm{乙}\mathrm{r}$ -掺杂 $\mathrm{秒}\mathrm{米}\mathrm{F}\mathrm{电子}{\mathrm{哦}}_3$变得很重要。样品的磁滞回线表明反铁磁趋势随着$\mathrm{乙}\mathrm{r}$专注。Ac 磁化率异常 ($\chi$) 和介电常数曲线 ${\mathrm{秒}\mathrm{米}}_{1——\mathrm{X}}{\mathrm{乙}\mathrm{r}}_{\mathrm{X}}\mathrm{F}\mathrm{电子}{\mathrm{哦}}_3$ 提供了在这些化合物中发生自旋重定向转变 (SRT) 的证据，并且还观察到随着温度的增加，SR 温度逐渐降低 ${\mathrm{乙}\mathrm{r}}^{3+}$离子。此外，电测量显示介电常数显着提高。${\mathrm{秒}\mathrm{米}}_{0.3}{\mathrm{乙}\mathrm{r}}_{0.7}\mathrm{F}\mathrm{电子}{\mathrm{哦}}_3$是唯一在室温下呈现巨大介电常数 (CDC) (10 ³ ) 的化合物，这归因于弛豫铁电体。同样，磁滞回线和铁电磁滞回线的出现表明磁性和铁电性并存。