Effects of Sm2O3 and Gd2O3+ Nd2O3 on Electromechanical Properties of PbTiO3 Ceramics

The electromechanical properties of PbTiO3 ceramics, modified by substitution of Sm or Gd + Nd (same average atomic radius as Sm) for Pb, were studied in the range of 6% to 14% substitution. The modified PbTiO3 ceramics were stable, and the Curie temperature decreased linearly over this composition...

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Veröffentlicht in:	Journal of the American Ceramic Society 1990-06, Vol.73 (6), p.1783-1784
Hauptverfasser:	Xue, W. R., Schulze, Walter A., Newnham, Robert E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals electromechanical properties Electrotechnical and electronic ceramics Exact sciences and technology gadolinium lead titanate neodymium samarium Technical ceramics
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Beschreibung
Zusammenfassung:	The electromechanical properties of PbTiO3 ceramics, modified by substitution of Sm or Gd + Nd (same average atomic radius as Sm) for Pb, were studied in the range of 6% to 14% substitution. The modified PbTiO3 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, kt/kp, 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.
ISSN:	0002-7820 1551-2916
DOI:	10.1111/j.1151-2916.1990.tb09834.x