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Strain-mediated electrical and optical properties of novel lead-free CuFe2O4–KNbO3 nanocomposite solid solutions: A combined experimental and Density Functional Theory studies
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2022-06-07 , DOI: 10.1002/jemt.24172 Shameem Banu I B 1 , Rajesh Raman 2 , Mohamad Hafiz Mamat 3 , Komalavalli P 1 , Poornima B H 1 , Divyalakshmi S 1 , Sathik Basha S 1 , Sathya Priya A 1 , Shamima Hussain 4
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2022-06-07 , DOI: 10.1002/jemt.24172 Shameem Banu I B 1 , Rajesh Raman 2 , Mohamad Hafiz Mamat 3 , Komalavalli P 1 , Poornima B H 1 , Divyalakshmi S 1 , Sathik Basha S 1 , Sathya Priya A 1 , Shamima Hussain 4
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This article summarizes the strain-mediated electrical and optical properties of novel lead-free xCuFe2O4 (1 − x) KNbO3 (x = 0.2, 0.3, and 0.4) multiferroic nanocomposite through a solid state route. X-ray diffraction analysis divulges the influence of interfacial strain in the KNbO3–CuFe2O4 matrix and shows the coexistence of orthorhombic and cubic spinel phases, respectively. Morphological analysis reveals that the average particle size of 0.3CuFe2O4–0.7KNbO3 is 25 nm which is smaller than the other two nanocomposites. The UV–visible absorption studies and Raman spectroscopy of 0.3CuFe2O4–0.7KNbO3 nanocomposite present the high energy bandgap and electro coupling of KNbO3 and CuFe2O4 phases. The DFT theoretical bandgap behaviors of all the three nanocomposites synchronize with the experimental bandgap results. Dielectric, ferroelectric and magnetoelectric behaviors are also improved in 0.3CuFe2O4–0.7KNbO3 nanocomposite as compared to pristine KNbO3 and the other two nanocomposites.
中文翻译：
新型无铅 CuFe2O4–KNbO3 纳米复合固溶体的应变介导电学和光学性质：结合实验和密度泛函理论研究
本文总结了新型无铅x CuFe 2 O 4 (1 − x) KNbO 3 ( x = 0.2, 0.3, 和 0.4) 多铁纳米复合材料通过固态途径的应变介导的电学和光学性质。X射线衍射分析揭示了KNbO 3 -CuFe 2 O 4基体中界面应变的影响，并分别显示了正交和立方尖晶石相的共存。形貌分析表明平均粒径为0.3CuFe 2 O 4 –0.7KNbO 3为 25 nm，小于其他两种纳米复合材料。0.3CuFe 2 O 4 –0.7KNbO 3纳米复合材料的紫外-可见吸收研究和拉曼光谱展示了 KNbO 3和 CuFe 2 O 4相的高能带隙和电耦合。所有三种纳米复合材料的 DFT 理论带隙行为与实验带隙结果同步。与原始 KNbO 3和其他两种纳米复合材料相比，0.3CuFe 2 O 4 –0.7KNbO 3纳米复合材料的介电、铁电和磁电行为也得到了改善。
更新日期：2022-06-07
中文翻译：
新型无铅 CuFe2O4–KNbO3 纳米复合固溶体的应变介导电学和光学性质：结合实验和密度泛函理论研究
本文总结了新型无铅x CuFe 2 O 4 (1 − x) KNbO 3 ( x = 0.2, 0.3, 和 0.4) 多铁纳米复合材料通过固态途径的应变介导的电学和光学性质。X射线衍射分析揭示了KNbO 3 -CuFe 2 O 4基体中界面应变的影响，并分别显示了正交和立方尖晶石相的共存。形貌分析表明平均粒径为0.3CuFe 2 O 4 –0.7KNbO 3为 25 nm，小于其他两种纳米复合材料。0.3CuFe 2 O 4 –0.7KNbO 3纳米复合材料的紫外-可见吸收研究和拉曼光谱展示了 KNbO 3和 CuFe 2 O 4相的高能带隙和电耦合。所有三种纳米复合材料的 DFT 理论带隙行为与实验带隙结果同步。与原始 KNbO 3和其他两种纳米复合材料相比，0.3CuFe 2 O 4 –0.7KNbO 3纳米复合材料的介电、铁电和磁电行为也得到了改善。
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