Preponderant influence of disordered 
<i>P4bm</i>
 phase on the piezoelectricity of critical compositions of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Na</mml:mi><mml:mrow><mml:mn>0.5</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>Bi</mml:mi><mml:mrow><mml:mn>0.5</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mi>TiO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
-based ferroelectrics

Adhikary, Gobinda Das; Sharma, Deepak; Punetha, Pooja; Jafo, Gudeta; Abebe, Getaw; Mishra, Anupam; Senyshyn, Anatoliy; Ranjan, Rajeev

doi:10.1103/physrevb.104.184102

Cited by 11 publications

(1 citation statement)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Above the respective ferroelectric to relaxor transition temperature, T F −R , the field-induced ferroelectric state transitions into an ergodic relaxor state. In the literature, T F −R at the MPB varies from 102 • C to 120 • C in NBT-6BT-NBT-7BT and from 120 • C to 135 • C in NBT-20KBT [18][19][20][21]. The electromechanical quality factor, Q m , is in the range of 120-130 for NBT-xBT [12,22] and is 100 for NBT-xKBT [23] at the MPB.…”

Section: Introductionmentioning

confidence: 99%

Texture-based ferroelectric hardening in Na1/2Bi1/2TiO3 -based piezoceramics

Bremecker

Wohninsland

Teuber

et al. 2023

Phys. Rev. Materials

View full text Add to dashboard Cite

Na 1/2 Bi 1/2 TiO 3 -based (NBT-based) ceramics offer a viable option to replace lead-based materials for highpower applications as they are characterized by a stable mechanical quality factor with increasing vibration velocity in comparison to lead-based piezoceramics. Recently, the minor and stable extrinsic contributions were revealed as the origin for the stability of the mechanical quality factor with increasing vibration velocity. This work identifies the very unusual high poling degree as cause for the small extrinsic contributions. To this end, complete pole figure densities have been quantified and correlated to the piezoelectric coefficient and electromechanical quality factor. This hypothesis is further strengthened by correlating the piezoelectric constant (sum of intrinsic and extrinsic contributions) with the remanent polarization (correlates to remanent texturing degree). In order to assess a full picture of NBT-based piezoceramics, 0.94Na 1/2 Bi 1/2 TiO 3 -0.06BaTiO 3 has been considered with and without Zn doping and with quenching. It is compared to 0.79Na 1/2 Bi 1/2 TiO 3 -0.21 K 1/2 Bi 1/2 TiO 3 with and without Mg doping. Finally, a contrast to soft Pb(Zr 1/2 Ti 1/2 )O 3 (PZT) flushes out the impact of domain wall motion on the piezoelectric coefficient and the electromechanical quality factor. Whereas a PZT-based reference material exhibits a linear increase in the piezoelectric constant with increasing remanent polarization, the NBT-based materials deviate from the linear trend, indicating a decrease in extrinsic contributions.

show abstract