The rare earth element Cerium substituted Strontium hexaferrite SrFe_12-xCe_xO₁₉(x = 0.0–0.60), prepared using cost-effective sol–gel a citrate precursor auto-combustion technique at annealing temperature 850 °C. Systematic decrease in crystalline size (79.64–66.02 nm), strain, and systematic increase in cell volume with an increase in the composition of Cerium were found. TGA shows a total weight loss of 43%, while DTA depicts two endothermic peaks at 34 °C and 395 °C and one exothermic peak at 76 °C and thus proves helpful in analyzing the thermal behavior of SrFe₁₂O₁₉. FTIR spectrum shows shifting of the peak toward lower wave number, and hence decrease in force constant and bond length is observed. The largest and minimum value of force constant in tetrahedral and octahedral sites are found to be 262.987 N/m, 260.360 N/m, and 141.257 N/m, 139.973 N/m, respectively. Decrease in stiffness constant C₁₁ (from 344.389 to 339.872), C₁₂ (from 127.376 to 125.706 GPa) and elastic moduli, Y (from 275.60 to 271.991 GPa), B (from 199.713 to 197.094 GPa), G (108.50–107.083 GPa) is observed. PL spectra show four peaks in the visible region and an intense peak is observed for X = 0.40 composition. Visible region luminescence peaks may support its applications in opto-electronics and biological imaging. The highest saturation magnetization is obtained for SrFe_11.80Ce_0.20O₁₉ hexaferrite sample of the order 54.24 emu/gm. The pattern of regular increment in coercivity is obtained from X = 0.00–0.40 with an order of 2421–5632 Oersted. In the SrFe₁₂O₁₉ sample, incorporation of Ce³⁺ composition profitably hinders the leakage current with maximal value of P_max, Pr and Ec that are 14.13 \({\upmu }\) c/cm², 50.84 \({\upmu }\) c/cm² and 4.33171 kV/cm, respectively, for X = 0.60 composition and regular pattern increment is seen with increasing Ce³⁺ composition. Thus tuning of structural, magnetic, luminescence and ferroelectric properties of Strontium hexaferrite with Ce³⁺ substitution may help its uses as electronics and electrical material for its numerous applications in Electronics, Electrical and Environmental sectors.

Graphic abstract

中文翻译：

---

用于工业应用的稀土 Ce3+ 取代锶六铁氧体陶瓷磁性纳米材料的结构、弹性、发光、磁性和多铁性的调整

稀土元素铈取代锶六铁氧体 SrFe _12-x Ce _x O ₁₉ ( x  = 0.0–0.60)，使用具有成本效益的溶胶-凝胶柠檬酸盐前体自动燃烧技术在 850 °C 退火温度下制备。发现晶体尺寸（79.64-66.02 nm）、应变和细胞体积系统性增加随着铈成分的增加而系统性增加。TGA 显示总重量损失为 43%，而 DTA 在 34 °C 和 395 °C 显示两个吸热峰，在 76 °C 显示一个放热峰，因此证明有助于分析 SrFe ₁₂ O ₁₉的热行为. FTIR 光谱显示峰向低波数移动，因此观察到力常数和键长降低。四面体和八面体位置的力常数的最大值和最小值分别为 262.987 N/m、260.360 N/m 和 141.257 N/m、139.973 N/m。降低刚度常数Ç ₁₁（从344.389到339.872），Ç ₁₂（从127.376到125.706 GPa）的和弹性模量，ÿ（从275.60到271.991 GPa）的，乙（从199.713到197.094 GPa）的，G ^（108.50-107.083 GPA ) 被观察到。PL 光谱在可见光区显示四个峰，X观察到一个强峰 = 0.40 成分。可见区发光峰可能支持其在光电和生物成像中的应用。SrFe _11.80 Ce _0.20 O ₁₉六铁氧体样品获得最高饱和磁化强度，数量级为 54.24 emu/gm。从X  = 0.00-0.40 以 2421-5632 奥斯特的顺序获得矫顽力的规则增量模式。在 SrFe ₁₂ O ₁₉样品中，Ce ³⁺成分的掺入有利地阻碍了泄漏电流，P _max、Pr 和 Ec 的_最大值为 14.13  \({\upmu }\)  c/cm ² , 50.84  \({\ upmu }\)  c/cm²和 4.33171 kV/cm，对于X  = 0.60 组成，随着 Ce ³⁺组成的增加，可以看到规则图案增量。因此，用 Ce ³⁺取代调整锶六铁氧体的结构、磁性、发光和铁电特性可能有助于其作为电子和电气材料在电子、电气和环境领域的众多应用中使用。

图形摘要