Potassium–Sodium Niobate Lead-Free Piezoelectric Materials: Past, Present, and Future of Phase Boundaries

2015 ◽  
Vol 115 (7) ◽  
pp. 2559-2595 ◽  
Author(s):  
Jiagang Wu ◽  
Dingquan Xiao ◽  
Jianguo Zhu
Keyword(s):  
Piezoelectric Materials ◽  
Lead Free ◽  
Sodium Niobate ◽  
Potassium Sodium Niobate ◽  
Phase Boundaries ◽  
Potassium Sodium

Potassium–sodium niobate lead-free ceramics: modified strain as well as piezoelectricity

2015 ◽  
Vol 3 (5) ◽  
pp. 1868-1874 ◽  
Author(s):  
Ting Zheng ◽  
Jiagang Wu ◽  
Dingquan Xiao ◽  
Jianguo Zhu ◽  
Xiangjian Wang ◽  
...  
Keyword(s):  
High Strain ◽  
Lead Free ◽  
Sodium Niobate ◽  
Potassium Sodium Niobate ◽  
Phase Boundaries ◽  
Potassium Sodium ◽  
Lead Free Ceramics ◽  
New Phase

The obvious conflicts between large piezoelectricity and high strain could be solved by developing new phase boundaries in potassium–sodium niobate materials.

scholarly journals Progress on the doping and phase boundary design of potassium–sodium niobate lead-free ceramics

2018 ◽  
Vol 08 (03) ◽  
pp. 1830003 ◽  
Author(s):  
Jie Xing ◽  
Ting Zheng ◽  
Jiagang Wu ◽  
Dingquan Xiao ◽  
Jianguo Zhu
Keyword(s):  
Room Temperature ◽  
Piezoelectric Properties ◽  
Lead Free ◽  
High Curie Temperature ◽  
Sodium Niobate ◽  
Sintering Aids ◽  
Potassium Sodium Niobate ◽  
Phase Boundaries ◽  
Potassium Sodium ◽  
Lead Free Ceramics

Potassium–sodium niobate (K,Na)NbO3/(KNN) lead-free ceramics have drawn vast amount of attention as one of the effective alternatives to lead-based ones. In recent years, the author’s group concentrated their work on KNN-based ceramics. This paper reviews the main obtained results in authors’ laboratory on how to enhance the piezoelectric properties of KNN-based ceramics, including the ions or compounds substitution, the constructing and types of phase boundaries near room temperature, the investigation of other tools (sintering aids, synthesis technique, poling conditions) on properties. All the published papers up to now show the developing higher performance with maintaining high Curie temperature of KNN-based ceramics which has great potential for the future and is the key to success for the field.

Investigation of the domain structure and hierarchy in potassium–sodium niobate lead-free piezoelectric single crystals

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 49060-49067 ◽  
Author(s):  
Micka Bah ◽  
Natalya Alyabyeva ◽  
Richard Retoux ◽  
Fabien Giovannelli ◽  
Mustapha Zaghrioui ◽  
...  
Keyword(s):  
Single Crystals ◽  
Domain Structure ◽  
Lead Free ◽  
Nanometer Scale ◽  
Sodium Niobate ◽  
Potassium Sodium Niobate ◽  
Length Scales ◽  
Potassium Sodium ◽  
Domain Structures ◽  
Self Organized

We reported self-organized and hierarchized domain structures on various length scales ranging from micrometer to nanometer scale in K0.5Na0.5NbO3 crystals.

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