Effect of heating rate on structural and optical properties of Si and Mg co-doped \(\hbox {ZrO}_{2}\) nanopowders

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• 作者：Nasrollah Najibi-Ilkhechi ; Behzad Koozegar-Kaleji…
• 关键词：$$\hbox {ZrO}_{2}$$ ZrO 2 nanopowders ; Sol鈥揼el method ; Optical properties ; Si and Mg dopant
• 刊名：Optical and Quantum Electronics
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：47
• 期：5
• 页码：1187-1195
• 全文大小：988 KB
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• 作者单位：Nasrollah Najibi-Ilkhechi (1)
  Behzad Koozegar-Kaleji (1)
  Esmaiel Salahi (2)
  
  1. Department of Materials Engineering, Faculty of Engineering, Malayer University, P.O. Box 65719-95863, Malayer, Iran
  2. Materials and Energy Research Center, P.O. Box 31878-316, Karaj, Iran
  
• 刊物主题：Optics, Optoelectronics, Plasmonics and Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X

文摘

Nanopowders of \(\hbox {ZrO}_{2}\) doped with Si and Mg were prepared by process controlled sol鈥揼el method. The effects of doping and heating rate (1, 4, 7, 10聽\(^{\circ }\hbox {C}\)/min and calcination temperature of 800聽\(^{\circ }\hbox {C}\)) on phase formation and optical properties of zirconia nanopowders were studied by X-ray diffraction (XRD), transmission electron microscopy, and UV鈥揤is absorption spectroscopy. XRD results showed that different heating rates have a great effect on the tetragonal and cubic phase formation, crystallinity, and particle size of doped \(\hbox {ZrO}_{2}\). Depending on the heating rate, band gap energy of \(\hbox {Si}^{4+}\) and \(\hbox {Mg}^{+2}\) doped \(\hbox {ZrO}_{2}\) crystals decreased. The minimum band gap was estimated to be \(\sim \)3鈥?.2 eV from UV鈥揤is spectra.