Influence of copper oxide on properties of potassium tantalate niobate single crystals. Issue 13 (October 2016)

• Record Type: Journal Article
• Authors: Liu, Bing; Zhang, Xin-en; Yang, Yu-guo; Lv, Xian-shun; Wei, Lei; Wang, Xu-ping; Zhang, Yuan-yuan; Xu, Jian-hua; Wang, Ji-yang
• Is Part Of: Ceramics international. Volume 42:Issue 13(2016)
• Page Start: 15091
• Page End: 15093
• Publication Date: 2016-10
• Subjects: KTN -- CuO addition -- Valence transition -- Electric properties; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.06.058
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: KT0.62 N0.38 and KT0.62 N0.38 :Cu single crystals are grown by the Czochralski method. The XRD patterns and electric properties of the obtained single crystals are measured. A clear color difference between KT0.62 N0.38 and KT0.62 N0.38 :Cu single crystals is observed although the XRD results indicate that both of them have a same phase. There is a diffraction peak corresponding to copper in the XRD pattern of KT0.62 N0.38 :Cu single crystals. Combining the brown color and XRD pattern of KT0.62 N0.38 :Cu single crystals, we speculate the dominating existence of Cu° in single crystals. The higher dielectric value is observed in KT0.62 N0.38 :Cu single crystals because that the existence of Cu° in KT0.62 N0.38 :Cu single crystals decreases the resistance of the grain. Moreover, KT0.62 N0.38 :Cu single crystals have the lower hysteresis area, which suggests the decrease of the amount of dissipated energy.