Influence of the Niobium or Fluorine Dopant Concentration on the Properties of Mn-Doped Lead Zirconate Titanate Ceramics
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概要
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In this paper, we report on the effect of donor addition (Nb5+ or F-) on the electrical and piezoelectric properties and crystallographic characteristics of Mn-doped lead zirconate titanate (PZT) ceramics. Samples were prepared chemically by coprecipitation of oxalates and hydroxides. The niobium ion was incorporated in the B site whereas the fluorine ion was introduced in the anionic site. Structural analysis (XRD) and measurement of electrical properties were carried out. Electron spin resonance was used to determined the valency states of manganese in PZT ceramics. From the experimental results, the F–O substitution decreases the amount of oxygen vacancies in the Mn-doped PZT, and the valency states remain unchanged. However, a small number of oxygen vacancies may exist in PZT doped with 1 at.% manganese and 2 at.% fluorine. In the (Mn,Nb) co-doping case, the valency states vary from 4+ to 2+ and the number of oxygen vacancies is lower or even almost equal to zero. Thus the electroneutrality is achieved by lead vacancies.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-08-15
著者
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Guiffard Benoit
Laboratoire De Genie Electrique Et Ferroelectricite (lgef) Institut National Des Sciences Appliquees
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Lebrun Laurent
Laboratoire De Genie Electrique Et Ferroelectricite (lgef) Institut National Des Sciences Appliquees
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Guyomar Daniel
Laboratoire de Génie Electrique et de Ferroélectricité, Institut National des Sciences Appliquées de Lyon, 8 rue de la Physique, 69621 Villeurbanne Cedex, France
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Boucher Eric
Laboratoire de Génie Electrique et Ferroélectricité, INSA de Lyon, bât Gustave Ferrié, 8 rue de la physique, Villeurbanne Cedex 69621, France
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Lebrun Laurent
Laboratoire de Génie Electrique et Ferroélectricité, INSA de Lyon, bât Gustave Ferrié, 8 rue de la physique, Villeurbanne Cedex 69621, France
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Guiffard Benoit
Laboratoire de Génie Electrique et Ferroélectricité, INSA de Lyon, bât Gustave Ferrié, 8 rue de la physique, Villeurbanne Cedex 69621, France
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