Physical and electrical properties of Pb(Sn
aSb
1-a)O
3 ceramics are described. Pb(Sr Sbt1-a)O3 compound has a cubic pyrochlore type structure represented by the formula Pb
2Sn
2aSb
2-2aO
7-a (1/8<a<2/3). The relative intensity of X-ray diffraction lines fitted well with the calculated one when the crystal structure of Pb(Sn
aSb
1-a)O
3 was assumed to have the pyrochlore type structure.
The ceramics formed under the hot pressing condition had high density and its microstructure was composed of a mixture of fine grains (1-2μ) and coarse grains (-10μ).
Electrical resistivity of a hot pressed sample (a= 1/2) greatly changed its original value after annealing in oxygen gas.
抄録全体を表示