In:
Journal of the American Ceramic Society, Wiley, Vol. 98, No. 2 ( 2015-02), p. 476-482
Abstract:
SrTiZr x O 3 ( x = 0, 0.002, 0.006, 0.01, and 0.014) ceramics with a weak temperature‐dependent giant permittivity ( 〉 10 4 ) and a very low dielectric loss ( 〈 0.01) were fabricated using the conventional solid‐state reaction method by sintering them in N 2 at 1500°C. With increasing Zr content, the permittivity decreased from approximately 48 000 to 18 000 and the dielectric loss decreased from approximately 0.005 to 0.003. According to the XRD , XPS , and ac conductivity analysis, the dielectric properties of pure SrTiO 3 ceramics sintered in N 2 were due to the existence of the giant defect dipoles generated by the fully ionized oxygen vacancies and Ti 3+ ions, while the dielectric properties of SrTiZr x O 3 ( x 〉 0) ceramics were also influenced by the defect dipoles ( ). The giant permittivity and low dielectric loss phenomenon could be explained by giant defect dipoles related to oxygen vacancies.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2015.98.issue-2
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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