Structure and electrical properties of (La,Ta)-doped (K&lt;inf&gt;0.5&lt;/inf&gt;Na&lt;inf&gt;0.5&lt;/inf&gt;)&lt;inf&gt;0.94&lt;/inf&gt;Li&lt;inf&gt;0.06&lt;/inf&gt;Nb&lt;inf&gt;0.95&lt;/inf&gt;Ta&lt;inf&gt;0.05&lt;/inf&gt;O&lt;inf&gt;3&lt;/inf&gt; ceramic

Yong Liu,Zhijun Xu,Qian Chen Qian Chen,Guorong Li,Ruiqing Chu

doi:10.1109/isaf.2011.6014003

Structure and electrical properties of (La,Ta)-doped (K<inf>0.5</inf>Na<inf>0.5</inf>)<inf>0.94</inf>Li<inf>0.06</inf>Nb<inf>0.95</inf>Ta<inf>0.05</inf>O<inf>3</inf> ceramic

Yong Liu, Zhijun Xu + Show 3 more

https://doi.org/10.1109/isaf.2011.6014003

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Publication Date: Jul 1, 2011

Affiliation: Liaocheng University, Shanghai Institute of Ceramics

#Structure Of Ceramics #Phase Structure Of Ceramics + Show 8 more

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Abstract

Piezoceramics (K 0.5 Na 0.5 ) 0.94−3x Li 0.06 La x Nb 0.95 Ta 0.05 O 3 (KNLNT-La x ) were synthesized by the conventional solid-state reaction process. The effects of (La,Ta)-doping on the phase structure and electrical properties of (KNLNT-La x ) ceramics were investigated. X-ray diffraction analysis showed that the crystal structure of the ceramics with high level of La-doping possessed pseudo-cubic phase and the pseudo-cubic phase structure of the ceramics seriously weakened the dielectric, ferroelectric and piezoelectric properties of the ceramics. In addition, it was found that the ceramics with (La,Ta)-doping displayed a relative lower loss tangent (tand) from room temperature to approximately 350°C.

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