Utilizing L‐arginine as a fuel, Mg_1‐xSr_xFe₂O₄ (0 ≤ x ≤ 0.5) spinel nanoparticles were prepared by the microwave combustion process. Impact of Sr²⁺ ion substitution on structural, morphology, optical, thermal, and magnetic characteristics is investigated by following techniques such as X‐ray diffraction (XRD), HR‐SEM, energy dispersive X‐ray analysis (EDX), diffused reflectance spectroscopy‐Ultra Violet (DRS‐UV), TG‐DTA, and VSM. XRD ensures the formation of the cubic spinel structure, and the average crystallite size was determined utilizing the Debye Scherer equation, which was found to be lying between 33.10 and 24.11 nm. HR‐SEM images exhibited agglomerated morphology, and the samples were observed to be highly crystalline in nature. EDX spectra confirmed the formation of pure and strontium doped magnesium ferrite, ensuring the existence of all the elements. The bandgap was observed to lie in between 2.02 and 1.57 eV, respectively. TG‐DTA spectra provide information regarding the total weight loss, endothermic, and exothermic transitions. From M‐H loops, it is observed that pure and strontium doped magnesium ferrite exhibits ferromagnetic behavior.

中文翻译：

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Sr2 +离子取代对MgFe2O4立方尖晶石的结构，形态，光学，热和磁性能的影响

利用L-精氨酸作为燃料，镁_{1- X}的Sr _X的Fe ₂ ö ₄（0≤  X 由微波燃烧方法制备≤0.5）尖晶石的纳米颗粒。Sr ^2+的影响通过以下技术研究了离子在结构，形态，光学，热和磁特性上的取代，例如X射线衍射（XRD），HR-SEM，能量色散X射线分析（EDX），漫反射光谱法-紫罗兰色（ DRS-UV），TG-DTA和VSM。XRD确保形成了尖晶石结构，并使用Debye Scherer方程确定了平均晶粒尺寸，该方程位于33.10至24.11 nm之间。HR-SEM图像显示出团聚的形态，并且观察到样品本质上是高度结晶的。EDX光谱证实纯的和锶掺杂的镁铁氧体的形成，确保了所有元素的存在。观察到带隙分别在2.02和1.57eV之间。TG-DTA光谱提供有关总重量减轻，吸热和放热转变的信息。从M-H回路中可以看到，纯的和锶掺杂的镁铁氧体表现出铁磁行为。