Y-type hexaferrites powder samples of Ba_1·8Sr_0·2Co₂Fe_12-xTb_xO₂₂ (with x = 0.0, 0.1, and 0.2) were prepared by the method of sol-gel auto combustion. XRD and Rietveld refinement analysis shows that the prepared Y-type hexaferrites samples exhibit pure crystalline phase with the absence of impurity. FTIR study gives an idea of the formation of Y-type hexaferrites by the appearance of three characteristics bands at 409, 433, and 552 cm⁻¹. FESEM analysis shows plate-like morphology with the presence of all hosts and substituted elements observed in the EDX spectra and mapping. The grain size decreases with increase in the concentration of Tb³⁺, the particle size was observed to be in the range 56.48–58.54 nm. Typical dielectric response of ferrites was observed in the dielectric analysis. Cole-Cole plot shows that the contribution of grain is negligible compared to grain boundaries contribution. The multi domain magnetic nature of the prepared Y-type hexaferrite samples resulted in domain wall displacement and consequently influences the values of the coercivity.

采用溶胶-凝胶自燃法制备了Ba _1·8 Sr _0·2 Co ₂ Fe _12-x Tb _x O ₂₂（x = 0.0、0.1和0.2）的Y型六价铁氧体粉末样品。XRD和Rietveld精炼分析表明，所制备的Y型六价铁氧体样品显示出纯晶相而没有杂质。FTIR研究通过在409、433和552 cm ^-1处出现三个特征带给出了形成Y型六铁氧体的想法。FESEM分析显示板状形态，在EDX光谱和作图中观察到所有主体和取代元素的存在。随着Tb ³⁺浓度的增加晶粒尺寸减小，观察到粒径在56.48–58.54 nm之间。在介电分析中观察到铁氧体的典型介电响应。Cole-Cole图显示，与晶界贡献相比，晶粒的贡献可忽略不计。制备的Y型六方铁氧体样品的多畴磁性会导致畴壁位移，从而影响矫顽力值。