Yb doped MgO transparent ceramics generated through the SPS method. Issue 10 (August 2022)

• Record Type: Journal Article
• Authors: Chen, Xuan; Zhang, Guangran; Tomala, Robert; Hreniak, Dariusz; Wu, Yiquan
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 10(2022)
• Page Start: 4320
• Page End: 4327
• Publication Date: 2022-08
• Subjects: Transparent ceramics -- Magnesium oxide -- Sintering aids -- Spark plasma sintering -- Optical properties; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.04.025
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Yb doped (0, 0.02, 0.1 and 0.5 at%) MgO transparent ceramics were synthesized through spark plasma sintering (SPS) at the relatively low temperature of 1100 °C for 5–60 min under a pressure of 105 MPa. The effects of dopant concentration and sintering holding time on the densification and microstructure evolution of MgO ceramics were investigated. All ceramics reached a relative density greater than 99.20%. The 0.02% Yb-doped MgO ceramic sintered at 1100 °C for 60 min showed the highest in-line transmittance, of 80% at 1030 nm, a value close to that of MgO single crystals. Yb dopant improved the transmittance, degree of densification and control of grain growth. Herein, the influence of Yb doping on the crystalline phase and microstructure was explored, and the photoluminescence properties of Yb in transparent MgO ceramics were investigated.