Structural, Optical and Magnetic Properties of NiO Nanopowders.
Structural, Optical and Magnetic Properties of NiO Nanopowders.
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DOI：
10.1166/jnn.2018.15301
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发表时间：
2018-07
影响因子：
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通讯作者：
B. J. Rani;B. Saravanakumar;G. Ravi;Venkatachalam Ganesh;A. Sakunthala;R. Yuvakkumar
中科院分区：
文献类型：
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作者：
B. J. Rani;B. Saravanakumar;G. Ravi;Venkatachalam Ganesh;A. Sakunthala;R. Yuvakkumar
在不使用表面活性剂的情况下，采用化学还原法合成了纳米氧化镍粉体。研究了NaBH4对NiO产物的结构、光学和磁性的影响。XRD结果表明，形成了占主导地位的单一相，立方面心的氧化镍。拉曼峰描述了面心立方NiO的特征一阶横光学（TO）声子、双声子激发（TO + LO）、激发（2LO）拉曼模振动。PL研究表明，存在强的发射带，这是在很好的协议与本征NiO产品。FTIR研究探索了所得产物的金属氧振动。TEM结果显示产物为球形结构。VSM研究探索了所得产物的弱铁磁性行为。高浓度的NaBH_4使样品的磁化强度增大，呈现出典型的弱铁磁曲线。还原剂的加入对NiO的结构、光学和磁学性能有着重要的影响。
Nickel oxide (NiO) nanopowders were synthesized without using surfactant by chemical reduction technique. NaBH4 influence on structural, optical and magnetic properties of NiO product was investigated. XRD results revealed the formation of dominant single phase, cubic face centered nickel oxide. Raman peaks depicts the characteristic first-order transverse optical (TO) phonon, two phonon excitation (TO + LO), excitation (2LO) Raman mode vibrations of face centered cubic NiO. PL studies revealed the presence of strong emission band which is in good agreement with the intrinsic NiO product. FTIR studies explored metal oxygen vibrations of the obtained product. TEM results revealed the nanoscale product with spherical shape structures. VSM studies explored weak ferromagnetic behavior of the obtained product. High concentration of NaBH4 increases magnetization value and exhibits the typical weak ferromagnetic curve. Reducing agent played a vital role in the structural, optical and magnetic properties of the obtained NiO product.