Electromechanical Properties of Lead Titanate Zirconate Ceramics with Lead Partially Replaced by Calcium or Strontium

Autor:	Frank Kulcsar
Rok vydání:	1959
Předmět:	Coupling Strontium Materials science Mineralogy chemistry.chemical_element Dielectric Calcium Planar chemistry visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Curie temperature Ceramic Composite material Lead (electronics)
Zdroj:	Journal of the American Ceramic Society. 42:49-51
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1959.tb09141.x
Popis:	By partially substituting Sr for Pb in ceramic lead titanate zirconate compositions near the morpho-tropic boundary, dielectric constants greater than 1300 can be obtained along with planar couplings of about 0.50. Calcium also raises the dielectric constant, but the planar coupling level is considerably lower than that obtained with Sr. Other effects noted with Sr are a lowering of the Curie temperature, a shift in the morphotropic boundary toward the rhombohedral side, and a decrease in the distortion from cubic symmetry. In addition, Sr was found to be effective as a fluxing agent.
Databáze:	OpenAIRE
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