TY - JOUR
T1 - Dielectric and piezoelectric performance of gadolinium-doped lead lanthanum zirconate titanate
AU - Mansour, Salwa
AU - Eid, Ahmed
AU - Abd El-Latif, Lamyaa
AU - Rashad, Mohamed
AU - Afifi, Mohamed
AU - Turner, Joseph
N1 - Funding Information:
This work was supported by the Egyptian Cultural Affairs & Mission Sector through Egyptian Cultural & Educational Bureau—Embassy of Egypt—Washington DC [JS-3591] and the Nano-Engineering Research Core Facility (NERCF)—College of Engineering—University of Nebraska—Lincoln.
Publisher Copyright:
© 2017 The American Ceramic Society
PY - 2018/5/1
Y1 - 2018/5/1
N2 - In this article, polycrystalline samples of Gd3+ ion-modified lead lanthanum zirconate titanate PLGZT: (Pb0.94- xGdxLa0.06)(Zr0.52Ti0.48)O3; x = 0, 2, 4, 6, and 8% have been prepared by the sol-gel autocombustion strategy. The structural properties of the prepared samples were analyzed by X-ray diffraction profile (XRD), Fourier transform infrared spectra (FT-IR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The samples were assigned to pure PZT perovskite tetragonal structure. Ag electrodes were made on both sides of the disks for measurements of electrical and dielectric properties at different temperatures ranging from 30 to 500°C at various frequencies. The maximum dielectric constant, Curie temperature (TC), dielectric loss at TC , and the piezoelectric charge coefficient d33 ranges of the investigated samples were found to be 1850 to 2420, 350 to 399°C, 0.023 to 0.026, and 299 to 532 pC/N, respectively. Higher coefficients were reached for the 4 % Gd substitution. Finally, the obtained results indicate that these materials can be good candidates for ultrasonic transducers.
AB - In this article, polycrystalline samples of Gd3+ ion-modified lead lanthanum zirconate titanate PLGZT: (Pb0.94- xGdxLa0.06)(Zr0.52Ti0.48)O3; x = 0, 2, 4, 6, and 8% have been prepared by the sol-gel autocombustion strategy. The structural properties of the prepared samples were analyzed by X-ray diffraction profile (XRD), Fourier transform infrared spectra (FT-IR), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The samples were assigned to pure PZT perovskite tetragonal structure. Ag electrodes were made on both sides of the disks for measurements of electrical and dielectric properties at different temperatures ranging from 30 to 500°C at various frequencies. The maximum dielectric constant, Curie temperature (TC), dielectric loss at TC , and the piezoelectric charge coefficient d33 ranges of the investigated samples were found to be 1850 to 2420, 350 to 399°C, 0.023 to 0.026, and 299 to 532 pC/N, respectively. Higher coefficients were reached for the 4 % Gd substitution. Finally, the obtained results indicate that these materials can be good candidates for ultrasonic transducers.
KW - PLZT
KW - dielectric properties
KW - piezoelectric properties
KW - sol-gel processes
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U2 - 10.1111/ijac.12835
DO - 10.1111/ijac.12835
M3 - Article
AN - SCOPUS:85044758019
SN - 1546-542X
VL - 15
SP - 766
EP - 774
JO - International Journal of Applied Ceramic Technology
JF - International Journal of Applied Ceramic Technology
IS - 3
ER -