ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this study, piezoelectric materials 0.95 (Na0.5Bi0.5)TiO3-0.05 BaTiO3 (NBT-BT)composition with excess x wt% Bi2O3 (x=0, 1, 2, and 3) are investigated as a function of sinteringtemperatures. The sintering characteristics and dielectric characteristics of excess Bi2O3-doped 0.95(Na0.5Bi0.5)TiO3- 0.05 BaTiO3 ceramics are developed with the aid of SEM, XRD patterns, anddielectric-temperature curves. The sintering process is carried out in air for 2h from 1120oC to1200oC. Dielectric-temperature properties are investigated in the temperature range of 30oC~350oC atthe frequencies of 10KHz~1MHz. The maximum dielectric constants of NBT-BT ceramics firstincrease with the increase of Bi2O3 content, reach the maximum at 1wt%- Bi2O3-added NBT-BTceramics, and then decrease with the further increase of Bi2O3 content. The maximum dielectricconstants of NBT-BT ceramics are almost unchanged as the measured frequency increases. The Curietemperatures of NBT-BT ceramics are also developed
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.65.pdf
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