Hole burning in YSZ:Pr3+ and YSZ:Eu3+ with various Y2O3 concentration

✍ Scribed by H. Koyama; T. Hattori

• Publisher: Institute of Physics and National Institute of Materials Science
• Year: 2003
• Tongue: English
• Weight: 152 KB
• Volume: 4
• Category: Article
• ISSN: 1468-6996
• DOI: 10.1016/s1468-6996(03)00024-x

✦ Synopsis

We have measured the hole spectra in YSZ:Pr 3þ and YSZ:Eu 3þ with various Y 2 O 3 concentrations at low temperature. The temperature dependence of the hole width which obtained from the hole spectra in YSZ:Pr 3þ and YSZ:Eu 3þ was similar to that for disordered materials. However, the Y 2 O 3 concentration dependence of the hole width in YSZ:Pr 3þ was contrary to that for YSZ:Eu 3þ at low temperature. The hole width was the widest in the case of YSZ:Pr 3þ at 10 mol% Y 2 O 3 . On the contrary, it was the narrowest in the case of YSZ:Eu 3þ at the same concentration of Y 2 O 3 . It was found that there are two states in YSZ, in which the degree of ordered differs from each other. Additionally, the Y 2 O 3 concentration dependence of the hole width at low temperature has reflected the ionic conductivity of YSZ at high temperature. It is suggested that the ordering of local structure is responsible for the ionic conduction in YSZ.