In:
Journal of Advanced Dielectrics, World Scientific Pub Co Pte Ltd, Vol. 03, No. 04 ( 2013-10), p. 1350018-
Abstract:
We synthesized Ba ( Ti 1-x Zr x ) O 3 -based (BTZ) nanopowders modified with Cu and Nb , and sintered ceramics using a one-step sol–gel process. Characterization using TG-DTG, XRD, SEM, and TEM analysis methods revealed that the powders formed at a nanometer scale. The process was controlled by the composition and calcining temperature. BaZrO 3 formed earlier than BaTiO 3 during the calcining, then a Ba ( Ti 1-x Zr x ) O 3 solid solution formed incompletely, resulting in ceramics with huge permittivity and good temperature stability. Moreover, the maximum dielectric constant (ε max ) first increased and then decreased as the Curie temperature (T c ) shifted to a lower temperature. When the Zr concentration was 5.4 mol%, ε max was greater than 24,000 and the dielectric loss (25°C) was only 0.005; this meets the Electronic Industries Alliance Y 5 V specifications. These nanopowders would permit a significant reduction in the thickness of multilayer ceramic capacitors and the huge permittivity of the ceramics will help meet the current demand for device miniaturization in the electronics industry.
Type of Medium:
Online Resource
ISSN:
2010-135X
,
2010-1368
DOI:
10.1142/S2010135X13500185
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2013
detail.hit.zdb_id:
2756564-6
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