Dielectric characterisation of SBN single-crystal fibers and non-doped and La doped ceramics

被引：0
|
作者：
Santos, I.A. [1 ]
Spínola, D.U. [1 ]
Garcia, D. [1 ,3 ]
Eiras, J.A. [1 ]
Manoel, E.R. [2 ]
Hernandes, A.C. [2 ]
Carrio, J.A.G. [2 ]
Mascarenhas, Y.P. [2 ]
机构：
[1] Grupo de Ceramicas Ferroeletricas, DFI, UFSCar, Rod. Washington Luiz Km 232, São Carlos - SP, Brazil
[2] Instituo de Fis. de S. Carlos, USP. 13560-250, Av. Dr. Carlos Botelho 1465, São Carlos - SP, Brazil
[3] Materials Research Laboratory, Pennsylvania State University, University Park, PA 16802, United States
来源：
Ferroelectrics | 2000年 / 238卷 / 01期
关键词：
Lanthanum oxide - Strontium barium niobates;
D O I：
10.1080/00150190008008778
中图分类号：
学科分类号：
摘要：
Dielectric permittivity as function of frequency and temperature of the Sr0.61Ba0.39Nb2O6 single-crystal fiber and ceramic samples are presented. Ceramic samples of the same composition, doped in weight with lanthanum oxide also are studied. The results show the existence of three regions of the dielectric relaxation in distinct ranges of temperature for all studied samples. These relaxation processes are related to structural and incommensurate phase transitions in this system. La doping apparently does not influence the relaxation processes.
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页码：147 / 154
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