摘要
研制了Ｋ＿２ＮｂＯＦ＿５－ＭＦ＿３（Ｍ＝Ａｌ、Ｇａ）新体系氟化物玻璃，测定了玻璃的特征温度、Ｒａｍａｎ光谱和电导率，玻璃中Ｎｂ￣（５＋）、Ａｌ￣（３＋）、Ｇａ￣（５＋）分别以ＮｂＯＦ、ＡＩＦ、ＧａＦ八面体形式存在，玻璃的电导率随ＡｌＦ＿３含量的增加而增加，ＡｌＦ＿３含量达到３０ｍｏｌ％时，Ａｌ￣（３＋）除ＡＩＦ八面体外，还有ＡｌＦ四面体结构出现，同时电导率降低，Ｆ￣－阴离子是主要的导电离子，７５Ｋ＿２ＮｂＯＦ＿５·２５ＡｌＦ＿３玻璃的电导率在１９６℃时，σ＝１．０２×１０￣（－２）Ｓ·ｃｍ￣（－１）。
K_2NbOF_5-MF_3(M=Al、Ga)newsystem glasses were prepared.The characteristictempelature,Raman spectra and conductivity ofsome sampes were measured.Nb￣(5+),Al￣(3+)and Ga￣(3+)inthe glasses exist as NbOF,AIF,GaFoctahedrons Conductivity increased with increase ofccntent of AlF_3 When the content of AlF_3 reached30mol%,AIF tetrahedrons turned up besidesAlF octahedrons,and conductivitv decreased.F￣-anion was the chief conducting ion. The conductivityof 75K_2bOF_5·25AlF_3 glass was 1.02×10￣(-2)S·cm￣(-1) at 196℃
出处
《功能材料》
EI
CAS
CSCD
1995年第5期449-452,共4页
Journal of Functional Materials
