Precursor Effect on Hydrothermal Synthesis of Sodium Potassium Niobate Fine Particles and Their Piezoelectric Properties

2011 ◽  
Vol 50 (9) ◽  
pp. 09ND09 ◽  
Author(s):  
Kiyoshi Kanie ◽  
Hideto Mizutani ◽  
Atsuki Terabe ◽  
Yoshiki Numamoto ◽  
Shintaro Tsukamoto ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Fine Particles ◽  
Piezoelectric Properties ◽  
Potassium Niobate ◽  
Sodium Potassium ◽  
Sodium Potassium Niobate

Precursor Effect on Hydrothermal Synthesis of Sodium Potassium Niobate Fine Particles and Their Piezoelectric Properties

2011 ◽  
Vol 50 (9S2) ◽  
pp. 09ND09 ◽  
Author(s):  
Kiyoshi Kanie ◽  
Hideto Mizutani ◽  
Atsuki Terabe ◽  
Yoshiki Numamoto ◽  
Shintaro Tsukamoto ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Fine Particles ◽  
Piezoelectric Properties ◽  
Potassium Niobate ◽  
Sodium Potassium ◽  
Sodium Potassium Niobate

ALKALINE NIOBATE-BASED PIEZOCERAMICS: CRYSTAL STRUCTURE, SYNTHESIS, SINTERING AND MICROSTRUCTURE

2010 ◽  
Vol 03 (01) ◽  
pp. 15-18 ◽  
Author(s):  
MARIJA KOSEC ◽  
BARBARA MALIČ ◽  
ANDREJA BENČAN ◽  
TADEJ ROJAC ◽  
JENNY TELLIER
Keyword(s):  
Crystal Structure ◽  
Piezoelectric Properties ◽  
Lead Free ◽  
Potassium Niobate ◽  
Promising Candidate ◽  
Sodium Potassium ◽  
Sodium Potassium Niobate ◽  
Structure Synthesis

In this review, the crystal structure and the synthesis of the sodium potassium niobate ( K 0.5 Na 0.5 NbO 3) as a promising candidate for lead-free piezoelectrics are addressed. The sintering and the microstructure as prerequisites for obtaining ceramics with reliable and sufficiently high piezoelectric properties for selected applications are discussed.

PIEZOELECTRIC PROPERTIES BY LITHIUM OXIDE ADDITION IN THE SODIUM—POTASSIUM NIOBATE SYSTEM

2007 ◽  
Vol 89 (1) ◽  
pp. 55-61 ◽  
Author(s):  
MIN-SOO KIM ◽  
DAE-SU LEE ◽  
EON-CHEOL PARK ◽  
SOON-JONG JEONG ◽  
IN-SUNG KIM ◽  
...  
Keyword(s):  
Piezoelectric Properties ◽  
Lithium Oxide ◽  
Potassium Niobate ◽  
Sodium Potassium ◽  
Sodium Potassium Niobate ◽  
Oxide Addition

Hydrothermal Synthesis of Sodium-Potassium Niobate Nanopowders

2008 ◽  
Vol 368-372 ◽  
pp. 579-581
Author(s):  
Shi Ping Wang ◽  
Hong Yan Miao ◽  
Guo Qiang Tan
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Treatment ◽  
Alkali Metals ◽  
Treatment Time ◽  
Hydrothermal Reaction ◽  
Treatment Temperature ◽  
Potassium Niobate ◽  
Sodium Potassium ◽  
Temperature Range ◽  
Sodium Potassium Niobate

Sodium-potassium Niobate (K0.4Na0.6NbO3, KNN) nanopowders were prepared by hydrothermal synthesis at the temperature range of 140-180°C for 12-48h using Nb2O5, NaOH and KOH as source materials. By means of XRD and SEM techniques, the effects of composition and hydrothermal treatment process, such as the rate of [R]/[Nb], the concentration of the alkali, the hydrothermal treatment temperature and the hydrothermal treatment time, on the microstructures and the crystallinity of alkali metals niobate were investigated in details. Results show that K0.4Na0.6NbO3 powders could be achieved by hydrothermal synthesis at the temperature range of 140-180°C with the alkalinity concentration of 2-8M. With the increase of hydrothermal reaction temperature and time, the crystallinity of KNN particles was improved. The obtained K0.4Na0.6NbO3 polycrystalline particles have rhombic structure.

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