Nasicon-type compounds and solid solutions, where M was Li or Na, were investigated by using X-ray powder diffraction and ionic conductivity methods. The variation in ionic conductivity as a function of x was regular (table 163).

J.M.Winand, A.Rulmont, P.Tarte: Journal of Solid State Chemistry, 1991, 93[2], 341-9

 

 

 

Table 163

Ionic Conductivity of Ge2-xMTix(PO4)3-Type Solid Solutions

 

Material

Temperature (K)

x

 (S/cm)

Ge2-xNaTix(PO4)3

600

0

2.8 x 10-7

Ge2-xNaTix(PO4)3

600

1

3.8 x 10-6

Ge2-xNaTix(PO4)3

600

2

2.3 x 10-5

Ge2-xNaTix(PO4)3

400

2

3.7 x 10-7

Ge2-xLiTix(PO4)3

600

0

2.5 x 10-5

Ge2-xLiTix(PO4)3

400

0

1.2 x 10-7

Ge2-xLiTix(PO4)3

600

1

1.8 x 10-4

Ge2-xLiTix(PO4)3

400

1

8.0 x 10-7

Ge2-xLiTix(PO4)3

600

2

1.5 x 10-3

Ge2-xLiTix(PO4)3

400

2

5.1 x 10-5