X-ray diffraction and dielectric studies were performed on synthesized ceramic samples of the section(1-x)(0.8PbMg_(1/3)Nb_(2/3)O_(3)·0.2BiScO_(3))・x(0.8PbTiO_(3)-PbMg_(1/3)Nb_(2/3)O_(3))with x=0-1 of the temary ...X-ray diffraction and dielectric studies were performed on synthesized ceramic samples of the section(1-x)(0.8PbMg_(1/3)Nb_(2/3)O_(3)·0.2BiScO_(3))・x(0.8PbTiO_(3)-PbMg_(1/3)Nb_(2/3)O_(3))with x=0-1 of the temary BiScO_(3)-PbTiO_(3)-PbMg_(1/3)Nb_(2/3)O_(3)(BS-PT-PMN)system,including the temperature dependence of thermally stimulated depolarization currents(TSDC).It was found that the samples are solid solutions with a perovskite structure,which have cubic symmetry in the range of x=0-0.587 and tetragonal symmetry in the range of x=0.680-1.In the intermediate composition range of x-0.587-0.680(morphotropic region-MR),the samples consist of a mixture of solid solutions of different symmetries.Data on the change in dielectric properties and TSDC(T)dependencies of solid solutions with a change in their composition were obtained.It was found that samples of compositions x=0-0.625 and 0.6875-1 exhibit relaxor-ferroelectric and conventional ferroelectric properties,respectively,while samples of compositions x=0.625-0.6875combine ferroelectric and relaxor-ferroelectric properties.展开更多
基金support of the Ministry of Education and Science of the Russian Federation as part of the state assignment for creating new youth laboratories(project FSFZ-2022-0007)using equipment of the Collective Usage Center RTU MIREA,which received support from the Ministry of Education and Science of the Russian Federation under Agreement No 075-15-2021-689.
文摘X-ray diffraction and dielectric studies were performed on synthesized ceramic samples of the section(1-x)(0.8PbMg_(1/3)Nb_(2/3)O_(3)·0.2BiScO_(3))・x(0.8PbTiO_(3)-PbMg_(1/3)Nb_(2/3)O_(3))with x=0-1 of the temary BiScO_(3)-PbTiO_(3)-PbMg_(1/3)Nb_(2/3)O_(3)(BS-PT-PMN)system,including the temperature dependence of thermally stimulated depolarization currents(TSDC).It was found that the samples are solid solutions with a perovskite structure,which have cubic symmetry in the range of x=0-0.587 and tetragonal symmetry in the range of x=0.680-1.In the intermediate composition range of x-0.587-0.680(morphotropic region-MR),the samples consist of a mixture of solid solutions of different symmetries.Data on the change in dielectric properties and TSDC(T)dependencies of solid solutions with a change in their composition were obtained.It was found that samples of compositions x=0-0.625 and 0.6875-1 exhibit relaxor-ferroelectric and conventional ferroelectric properties,respectively,while samples of compositions x=0.625-0.6875combine ferroelectric and relaxor-ferroelectric properties.
