Effect of strain due to Ni substitution in CeO₂ nanoparticles on optical and mechanical properties

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• 作者：Saurabh Tiwari^a ; Gaurav Bajpai^a ; Tulika Srivastava^a ; Srashti Viswakarma^a ; Parasharam Shirage^a ; Somaditya Sen^a ; ^{sens@iiti.ac.in} ; Sajal Biring^b ;
• 关键词：Cerium oxide ; Sol-gel ; Strain ; Urbach energy ; Nanoparticles
• 刊名：Scripta Materialia
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：84-87
• 全文大小：700 K
• 卷排序：129

文摘

CeO2, a strong cubic fluorite structured ceramic, with well-defined optical and mechanical properties may be modified by proper substitution. Ni substitution in Ce1 − xNixO2 (0 ≤ x ≤ 0.08) nanoparticles, hints at strain generation in the lattice bringing in changes in structural properties. The strain introduces changes in the electronic, optical and mechanical properties. The origin of strain is discussed using structural, optoelectronic, vibrational and mechanical studies discussing the elastic and plastic behavior of the materials.