ISSN:
1662-9752
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:
0.03Pb(Sb0.5Nb0.5)O3-0.03Pb(Mn1/3Nb2/3)O3-(0.94-x)PbTiO3-xPbZrO3 ceramics dopedwith Y2O3 were synthesized by conventional bulk ceramic processing technique. Phases analysis,microstructures and piezoelectric properties were investigated as a function of Y2O3 contents (0.03,0.05, 0.1 0.3, 0.5 and 0.7 wt.%). Microstructures and phases information were characterized using ascanning electron microscope (SEM) and an X-ray diffractometer (XRD). Relative dielectricconstant (K33T) and coupling factor (kp) were obtained from the resonance measurement method.Both K33T and kp were shown to reach to the maximum at 0.1wt.% Y2O3. In order to evaluate thestability of resonance frequency and effective electromechanical coupling factor (Keff) as a functionof Y2O3 contents under strong electric field, the variation of resonance and anti-resonancefrequency were also measured using a high voltage frequency response analyzer(FRA5096) undervarious alternating electric fields from 10V/mm to 80V/mm. It was shown that the effectiveelectromechanical coupling factor was stabilized along with increasing Y2O3 contents
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.544-545.737.pdf
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