<001>textured Pb(Ni_(1/3)Nb_(2/3))O_(3)-PbZrO_(3)-PbTiO_(3)(PNN-PZT)ceramics were prepared by templated grain growth(TGG)technique using 0.36PNN-x PZ-(0.64-x)PT(x=0.23,0.25 and 0.27)powder matrix.Optimum templat...<001>textured Pb(Ni_(1/3)Nb_(2/3))O_(3)-PbZrO_(3)-PbTiO_(3)(PNN-PZT)ceramics were prepared by templated grain growth(TGG)technique using 0.36PNN-x PZ-(0.64-x)PT(x=0.23,0.25 and 0.27)powder matrix.Optimum template content was derived to achieve the best electromechanical properties of textured ceramics.The piezoelectric coefficient d33=1165 pC/N,Curie temperature T_(C)=197°C,longitudinal mode electrome-chanical coupling factor k33=0.86 and a very large effective piezoelectric strain coefficient d_(33)^(*)=2041 pm/V were simultaneously achieved at the morphotropic phase boundary(MPB)composition(x=0.25)with 3 vol.%BaTiO_(3)(BT)templates.Domain structures of textured ceramics were analyzed in detail to reveal the origin of these high piezoelectric and electromechanical properties.展开更多
以固态氧化物为原料,采用固态合成工艺制备Pb(Zn1/3Nb2/3)O3-Pb(Ni1/3Nb2/3)O3-Pb(ZrTi)O3(PZN-PNN-PZT)压电陶瓷,并研究了锆钛比(r(Zr)/r(Ti))、Ba2+的A位取代及Ba2+、La3+的A位复合取代对压电陶瓷电性能的影响。结果表明,PZN-PNN-PZT...以固态氧化物为原料,采用固态合成工艺制备Pb(Zn1/3Nb2/3)O3-Pb(Ni1/3Nb2/3)O3-Pb(ZrTi)O3(PZN-PNN-PZT)压电陶瓷,并研究了锆钛比(r(Zr)/r(Ti))、Ba2+的A位取代及Ba2+、La3+的A位复合取代对压电陶瓷电性能的影响。结果表明,PZN-PNN-PZT压电陶瓷在r(Zr)/r(Ti)=1.03下,进行Ba2+,La3+的A位复合取代后,即式子在Pb0.92Ba0.04La0.04(Ni1/3Nb2/3)y(Zn1/3Nb2/3)z Zrm Tin O3时压电性能最佳,其介电常数εT33/ε0=5 657,压电常数d33=709pC/N,机电耦合系数kp=0.69,品质因数Qm=45,居里温度TC=180.9℃。展开更多
Piezoelectric PZT ceramics with high piezoelectric properties and good thermal stability are urgently desired concerning the practical application.New compositions of LiNbO_(3) modified Pb(Ni_(1/3)Nb_(2/3))O_(3)single...Piezoelectric PZT ceramics with high piezoelectric properties and good thermal stability are urgently desired concerning the practical application.New compositions of LiNbO_(3) modified Pb(Ni_(1/3)Nb_(2/3))O_(3)single bondPbZrO_(3)single bondPbTiO3 ceramics have been prepared in this study.The effects of the introduction of the LiNbO3 on the system were comprehensively investigated in terms of the phase structure,microstructure,electric properties,and thermal stability behavior of the ceramics.All compositions are located in the morphotropic phase boundary(MPB)region,and the ratio of the rhombohedral(R)phase increases obviously with the increase of LiNbO_(3) concentration.With increasing the LiNbO3 content,the piezoelectric properties were significantly enhanced.The sample added with 2%(in mole)LiNbO_(3) shows excellent electric properties,including T_(m)=185℃,εr=5,643,k_(p)=0.626,Q_(m)=51,d_(33)=902 pC/N.More importantly,no thermal depolarization behavior was observed in the temperature range of 25–100℃.For PNN-PZT-x%LN ceramics,which is mainly attributed to the pinning effect resulted by the(Li_(Pb)-Nb_(Zr/Ti)) defect dipoles.展开更多
In this paper,0.36Pb(Ni_(1/3)Nb_(2/3))O_(3)-0.24PbZrO3-0.40PbTiO_(3)(PNN-PZT)ceramic was prepared,and texture engineering was performed on this PNN-PZT ceramic to improve its electromechanical properties and temperatu...In this paper,0.36Pb(Ni_(1/3)Nb_(2/3))O_(3)-0.24PbZrO3-0.40PbTiO_(3)(PNN-PZT)ceramic was prepared,and texture engineering was performed on this PNN-PZT ceramic to improve its electromechanical properties and temperature stability.Single element ultra-sonic transducers were prepared using PNN-PZT,PNN-PZT textured ceramics,and their performance were evaluated and com-pared using a PZT-5H ceramic based transducer as the benchmark.It is shown that the sensitivity and bandwidth of the PNN-PZT textured ceramic-based transducer are much superior to regular PNN-PZT ceramic and PZT-5H ceramic based transducers.展开更多
基金supported in part by the Natural Science Foun-dation of Heilongjiang Province(No.LH2022E048)Postdoctoral Science Foundation of Heilongjiang Province(No.LBH-Z22138)China National Postdoctoral Program for Innovative Talents(No.BX20490103).
文摘<001>textured Pb(Ni_(1/3)Nb_(2/3))O_(3)-PbZrO_(3)-PbTiO_(3)(PNN-PZT)ceramics were prepared by templated grain growth(TGG)technique using 0.36PNN-x PZ-(0.64-x)PT(x=0.23,0.25 and 0.27)powder matrix.Optimum template content was derived to achieve the best electromechanical properties of textured ceramics.The piezoelectric coefficient d33=1165 pC/N,Curie temperature T_(C)=197°C,longitudinal mode electrome-chanical coupling factor k33=0.86 and a very large effective piezoelectric strain coefficient d_(33)^(*)=2041 pm/V were simultaneously achieved at the morphotropic phase boundary(MPB)composition(x=0.25)with 3 vol.%BaTiO_(3)(BT)templates.Domain structures of textured ceramics were analyzed in detail to reveal the origin of these high piezoelectric and electromechanical properties.
文摘以固态氧化物为原料,采用固态合成工艺制备Pb(Zn1/3Nb2/3)O3-Pb(Ni1/3Nb2/3)O3-Pb(ZrTi)O3(PZN-PNN-PZT)压电陶瓷,并研究了锆钛比(r(Zr)/r(Ti))、Ba2+的A位取代及Ba2+、La3+的A位复合取代对压电陶瓷电性能的影响。结果表明,PZN-PNN-PZT压电陶瓷在r(Zr)/r(Ti)=1.03下,进行Ba2+,La3+的A位复合取代后,即式子在Pb0.92Ba0.04La0.04(Ni1/3Nb2/3)y(Zn1/3Nb2/3)z Zrm Tin O3时压电性能最佳,其介电常数εT33/ε0=5 657,压电常数d33=709pC/N,机电耦合系数kp=0.69,品质因数Qm=45,居里温度TC=180.9℃。
基金This work was supported by Key Research and Development Program of Ministry of Science and Technology of China(No.2022YFB3204000).
文摘Piezoelectric PZT ceramics with high piezoelectric properties and good thermal stability are urgently desired concerning the practical application.New compositions of LiNbO_(3) modified Pb(Ni_(1/3)Nb_(2/3))O_(3)single bondPbZrO_(3)single bondPbTiO3 ceramics have been prepared in this study.The effects of the introduction of the LiNbO3 on the system were comprehensively investigated in terms of the phase structure,microstructure,electric properties,and thermal stability behavior of the ceramics.All compositions are located in the morphotropic phase boundary(MPB)region,and the ratio of the rhombohedral(R)phase increases obviously with the increase of LiNbO_(3) concentration.With increasing the LiNbO3 content,the piezoelectric properties were significantly enhanced.The sample added with 2%(in mole)LiNbO_(3) shows excellent electric properties,including T_(m)=185℃,εr=5,643,k_(p)=0.626,Q_(m)=51,d_(33)=902 pC/N.More importantly,no thermal depolarization behavior was observed in the temperature range of 25–100℃.For PNN-PZT-x%LN ceramics,which is mainly attributed to the pinning effect resulted by the(Li_(Pb)-Nb_(Zr/Ti)) defect dipoles.
基金This work was supported by the National Natural Science Foundation of China(Grant No.51975160).
文摘In this paper,0.36Pb(Ni_(1/3)Nb_(2/3))O_(3)-0.24PbZrO3-0.40PbTiO_(3)(PNN-PZT)ceramic was prepared,and texture engineering was performed on this PNN-PZT ceramic to improve its electromechanical properties and temperature stability.Single element ultra-sonic transducers were prepared using PNN-PZT,PNN-PZT textured ceramics,and their performance were evaluated and com-pared using a PZT-5H ceramic based transducer as the benchmark.It is shown that the sensitivity and bandwidth of the PNN-PZT textured ceramic-based transducer are much superior to regular PNN-PZT ceramic and PZT-5H ceramic based transducers.
