Structural and optical properties of manganese substituted nanocrystalline bismuth ferrite thin films by sol–gel process
Structural and optical properties of manganese substituted nanocrystalline bismuth ferrite thin films by sol–gel process
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DOI：
10.1016/j.jallcom.2013.08.037
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发表时间：
2014-01
影响因子：
6.2
通讯作者：
H. Sharma;N. B. Singh;K. Devi;J. Lee;S. B. Singh
中科院分区：
文献类型：
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作者：
H. Sharma;N. B. Singh;K. Devi;J. Lee;S. B. Singh
采用溶胶-凝胶法在石英衬底上制备了锰(Mn)掺杂的纳米晶铋铁氧体(BiFe1−xMnxO3)薄膜，研究了掺杂对BiFe1−xMnxO3体系结构和光学性能的影响。当Mn含量增加到30%时，晶格常数发生扭曲，单位晶胞体积收缩，没有形成第二相。从AFM照片上观察到，随着Mn含量的增加，晶粒尺寸也随之增大。光学透过率谱显示透过率(T%)随Mn含量的增加而降低。此外，还观察到Mn的存在导致了样品的光学能带隙的减小。研究了Mn掺杂对BiFe_1-−_xMn_xO_3体系光致发光性能的影响，为其在纳米光电子器件中的应用奠定了基础。
Manganese (Mn) substituted nanocrystalline Bismuth Ferrite (BiFe1−xMnxO3) thin films were deposited on quartz substrates by sol–gel process and the effect of the substitution on the structural and optical properties of BiFe1−xMnxO3system was studied. With the increase in Mn content up to 30%, a distortion in crystal lattice constants and contraction in unit cell volume was observed without any formation of secondary phase. From the AFM photograph ran increase in grain size with the increase in Mn contents was observed. Optical transmittance spectra showed a decrease in transmittance (T%) with the increase in Mn content. Further, it was observed that the presence of Mn lead to the decrease in optical energy band gap of the samples. The effect of Mn substitution on the photoluminescent properties of BiFe1−xMnxO3system was also studied in order to exploit their possible application in nanoscale optoelectronic devices.