PHYSICAL AND ELECTRICAL PROPERTIES ENHANCEMENT OF RARE-EARTH DOPED-POTASSIUM SODIUM NIOBATE (KNN): A REVIEW

The volatility of alkaline elements (K, Na) in potassium sodium niobate, (KxNa1-x)NbO3 (KNN) is detrimental to the stoichiometry of KNN and contributes to the failure to achieve high-density structures leading to the formation of intrinsic defects. By partial doping with different rare-earth element...

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Bibliographic Details
Published inCeramics (Praha) Vol. 59; no. 2; pp. 158 - 163
Main Authors Maziati, A M H, Mohd, W A R, Azlan, U A A
Format Journal Article
LanguageEnglish
Published University of Chemistry and Technology, Prague 01.01.2015
Subjects
Ceramics
Defects
Doping
Electrical properties
Intrinsic defects
Piezoelectric
Potassium sodium niobate
Rare earth metals
Rare earths
Sodium niobates
Stoichiometry
Volatility
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Summary:The volatility of alkaline elements (K, Na) in potassium sodium niobate, (KxNa1-x)NbO3 (KNN) is detrimental to the stoichiometry of KNN and contributes to the failure to achieve high-density structures leading to the formation of intrinsic defects. By partial doping with different rare-earth elements, the inherent defects can be improved. Therefore, considerable attempts have been made to develop doped-KNN based ceramics with good electrical properties. Research activities are reviewed, including the dopant type and doping role in the KNN perovskite structure.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0862-5468
1804-5847