Physical and electrical properties enhancement of rare-earth doped-potassium sodium niobate (KNN): A review

Mohd Hatta, Maziati Akmal and Abd Rashid, Mohd Warikh M. and Haji Azlan, Umar Al-Amani (2015) Physical and electrical properties enhancement of rare-earth doped-potassium sodium niobate (KNN): A review. Journal Ceramics-SILKATY, 59 (2). pp. 158-163. ISSN 0862-5468 E-ISSN 1804-5847

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Abstract

Alkaline niobate mainly potassium sodium niobate, (KxNa1-x) NbO3 (abreviated as KNN) has long attracted attention as piezoelectric materials as its high Curie temperature (Tc) and piezoelectric properties. The volatility of alkaline element (K, Na) is, however detrimental to the stoichiometry of KNN, contributing to the failure to achieve high-density structure and lead to the formation of intrinsic defects. By partially doping of several rare-earth elements, the inherent defects could be improved significantly. Therefore, considerable attempts have been made to develop doped-KNN based ceramic materials with high electrical properties. In this paper, these research activities are reviewed, including dopants type and doping role in KNN perovskite structure.

Item Type:	Article (Journal)
Additional Information:	8252/78205
Uncontrolled Keywords:	Potassium sodium niobate, Piezoelectric, Volatility, Intrinsic defects, Rare earths
Subjects:	Q Science > Q Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Science
Depositing User:	Dr Maziati Akmal
Date Deposited:	19 Feb 2020 11:04
Last Modified:	19 Feb 2020 11:04
URI:	http://irep.iium.edu.my/id/eprint/78205

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