Effects of Sm sub 2 O sub 3 and Gd sub 2 O sub 3 on electromechanical properties of PbTiO sub 3 ceramics

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Journal of the American Ceramic Society; (USA)

DOI:https://doi.org/10.1111/j.1151-2916.1990.tb09834.x· OSTI ID:6338924

Xue, W R; Schulze, W A; Newnham, R E ^[1]

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1. Pennsylvania State Univ., University Park, PA (USA). Materials Research Lab.

This paper reports the electromechanical properties of PbTiO{sub 3} ceramics, modified by substitution of Sm or Gd + Nd (same average atomic radius as Sm) for Pb, studied in the range of 6% to 14% substitution. The modified PbTiO{sub 3} ceramics were stable, and the Curie temperature decreased linearly over this composition range. The 10% Sm composition had a large anisotropy in the coupling factor ratio, {ital k{sub t}/k{sub p}}, and a similar, but weaker, effect developed for 12% (1/2 Gd + 1/2 Nd). This indicates that other than average ion size may influence the electromechanical coupling factor ratio.

• OSTI ID: 6338924
• Journal Information: Journal of the American Ceramic Society; (USA), Vol. 73:6; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
LEAD OXIDES
ELECTRICAL PROPERTIES
TITANATES
ANISOTROPY
CHEMICAL COMPOSITION
CRYSTAL DOPING
CURIE POINT
GADOLINIUM OXIDES
MECHANICAL PROPERTIES
NEODYMIUM OXIDES
SAMARIUM OXIDES
CHALCOGENIDES
GADOLINIUM COMPOUNDS
LEAD COMPOUNDS
NEODYMIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
360204* - Ceramics
Cermets
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360203 - Ceramics
Cermets
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360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies