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首页> 外文期刊>Journal of materials science >Optimization of magnetodielectric coupling in Mn substituted BiFeO_3 for potential memory devices
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Optimization of magnetodielectric coupling in Mn substituted BiFeO_3 for potential memory devices

机译：Mn替代BiFeO_3中潜在存储器的磁电耦合优化。

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Coexistence of spontaneous magnetization and polarization is a key phenomenon in multiferroic materials whereas coupling among these order parameters is anticipated to play a vital role in modern day engineering devices and information technology. In this context, Mn substituted BiFeO~(3)was synthesized using sol–gel accompanying auto-combustion method. X-ray diffraction of the calcined BiFe~(1−x)Mn~(x)O~(3)samples exhibited a crystalline nature and phase purity of the samples. Among the samples, BiFe~(0.8)Mn~(0.2)O~(3)depicted more stable rhombohedral structure as compared to BiFeO~(3), whereas mixed phases of orthorhombic and monoclinic were observed in BiFe~(1−x)Mn~(x)O~(3)at 0.4 ≤ x ≤ 1.0. Surface morphology, as seen using a field emission electron microscope, revealed decreasing granular size which interpreted modified magnetic attributes examined by vibrating sample magnetometer for specific Mn contents. Elemental wt% were confirmed by energy dispersive X-ray spectroscopy. To extract the optimized results from Mn substituted BiFeO~(3), magnetodielectric coupling was examined as well under 6 kOe applied magnetic field which declared BiFe~(0.8)Mn~(0.2)O~(3)as the most optimized composition. Hence, this research work has opened the way for the material scientists and engineers to pursue more efficient multiferroics. It is an effective way to rectify various issues relevant to device applications like quick switching, magnetically controlled supercapacitors and designing fast and higher density data storage devices that is magnetoelectric random-access memories.
机译：自发磁化和极化的共存是多铁性材料中的一个关键现象，而这些有序参数之间的耦合有望在现代工程设备和信息技术中发挥至关重要的作用。在这种情况下，使用溶胶-凝胶伴随自燃法合成了Mn取代的BiFeO〜（3）。煅烧后的BiFe〜（1-x）Mn〜（x）O〜（3）样品的X射线衍射显示出样品的晶体性质和相纯度。在样品中，BiFe〜（0.8）Mn〜（0.2）O〜（3）与BiFeO〜（3）相比具有更稳定的菱面体结构，而BiFe〜（1-x）中观察到正交晶和单斜晶的混合相。 Mn〜（x）O〜（3）为0.4≤≤x≤≤1.0。使用场发射电子显微镜观察到的表面形态显示出减小的粒度，这解释了通过振动样品磁力计针对特定的Mn含量检查的改进的磁性。元素重量％通过能量色散X射线光谱法确认。为了从Mn取代的BiFeO〜（3）中提取优化的结果，还在6 kOe的施加磁场下检查了磁电耦合，将BiFe〜（0.8）Mn〜（0.2）O〜（3）称为最优化的成分。因此，这项研究工作为材料科学家和工程师寻求更高效的多铁氧体开辟了道路。这是纠正与设备应用相关的各种问题的有效方法，例如快速开关，磁控超级电容器以及设计快速且高密度的数据存储设备（即磁电随机存取存储器）。

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