Topics in electronic ceramics

Swartz, S. L.

doi:10.1109/14.59868

Cited by 160 publications

(54 citation statements)

References 221 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…and (B = Ti, Nb, Zr, etc.) [10]. In perovkites the cation at the A site is generally soluble in water whereas the B site cation that is only slightly soluble overall the practical pH range.…”

Section: Introductionmentioning

confidence: 99%

Solubility and aging of lead magnesium niobate in water

Şakar‐Deliormanlı

Çelik

Polat

2009

Ceramics International

View full text Add to dashboard Cite

Lead magnesium niobate (PMN) is an important relaxor ferroelectric material commonly employed in multilayer capacitor and actuator manufacturing owing to its high dielectric constant and superior electrostrictive properties. However, stability of this material in water is not very well known and there is need for a detailed investigation. In this research, solubility of lead magnesium niobate powders in water was determined as a function of solids concentration. The obtained results showed that the amount of cation leaching from the PMN surface depends on the pH value of the suspension and the solids concentration. The Pb 2+ and Mg 2+ ion dissolution was very high especially in the acidic pH range. Nevertheless, neither the dissolution mechanism nor the effects of dissolved ions on the stability were the same for those ions. The study provides new aspects on the solubility of perovskite materials which possess more than one soluble cation in their structure. #

show abstract

Section: Introductionmentioning

confidence: 99%

Solubility and aging of lead magnesium niobate in water

Şakar‐Deliormanlı

Çelik

Polat

2009

Ceramics International

View full text Add to dashboard Cite

show abstract

“…Piezoelectric lead titanate oxide (PbTiO 3 , PT) is of considerable scientific and technical interest because of its extraordinary electromechanical properties leading to the development of novel devices, such as nonvolatile memories, detectors, sensors or actuators [1,2,3]. A variety of ferroelectric properties can be controlled by replacing the lead or titanium cations with rareearth or transition-metal ions.…”

Section: Introductionmentioning

confidence: 99%

Iron-oxygen vacancy defect association in polycrystalline iron-modifiedPbZrO3antiferroelectrics: Multifrequency electron paramagnetic resonance and Newman superposition model analysis

et al. 2006

View full text Add to dashboard Cite

The Fe 3+ center in ferroelectric PbTiO 3 together with an oxygen vacancy forms a charged defect associate, oriented along the crystallographic c-axis.Its microscopic structure has been analyzed in detail comparing results from a semi-empirical Newman superposition model analysis based on finestructure data and from calculations using density functional theory.Both methods give evidence for a substitution of Fe 3+ for Ti 4+ as an acceptor center. The position of the iron ion in the ferroelectric phase is found to be similar to the B-site in the paraelectric phase. Partial charge compensation is locally provided by a directly coordinated oxygen vacancy.Using high-resolution synchrotron powder diffraction, it was verified that lead titanate remains tetragonal down to 12 K, exhibiting a c/a-ratio of 1.0721.

show abstract

“…Since devices made from this material are to be used over a wide temperature range, pure barium titanate cannot be utilized for practical applications. It must be modi"ed with various solid solutions and additives, giving rise to varying tempe-rature behavior of ceramics, as per the application (3).…”

Section: Introductionmentioning

confidence: 99%