• Miss. Sadhana Ramchandra Salunkhe
• Dr. Savita Amol Patil
• Dr, L..D. Jadhav

we present a critical review of lead-free barium titanate-based piezo-electrics. Ferroelectric materials refer to the group of dielectrics that holds spontaneous polarization. Lead-free BaTiO3 (Barium Titanate) plays a very important role in industrial areas because of its different type of applications due to its better ferroelectric properties and large dielectrics constant. Barium titanate is better ferroelectric material and its structural, dielectric, and electric properties can be alternated by replacing dopants or ions In this review paper BaTiO3-based ferroelectric materials were deliberated, and recapped the resolution of different studies by changing various synthesis methods such as spray pyrolysis, solution growth technique, solid state reaction method, mixed oxide technique, sol gel method, magnetron sputtering, and ceramic method and so on. And ranging shape of nanomaterial’s. By replacing dopant like Ca, Zr, Fe and La etc. because of doping in BaTiO3, materials achieve good electrical and dielectric properties compared to pure BaTiO3 these properties observed, velocity of the longitudinal ultrasonic waves (VL= 5980.9 m/s), velocity of transverse ultrasonic waves (VT = 3550.6 m/s), Young’s modulus(E =163.88 GPa) and the shear modulus ( G = 66.73 GPa) Then by changing sintering temperature such as 1350℃ to 1400℃ of BZT sample indicates the good values of remnant polarization like 35µC/cm2 and better dielectric constant like 1700 were observed. BCT-BZT composite it shows the good elastic, mechanical and dielectric properties such as residual stress of 1.66 GPa, remnant polarization value (Pr = 10 µC/cm2), coercive field value (VC = 5V), dielectric permittivity is 265 at 1 kHz and the dielectric loss value 0.2. (XRD) X-Ray Diffraction and SEM (Scanning Electron Microscope) indicates the average crystallite size ranging from 40 nm to 80 nm and TG-DTA (Thermo-gravimetric – Differential Thermal Analysis) is measured total weight loss of about 1.73% . These results will give a brief knowledge of the existing literature on the few literatures published so far in this field.

BaTiO3, Nanomaterial, XRD, TG – DTA, Dielectric constant, Nanoparticles. .

"BaTiO3 BASED FERROELECTRICS: HISTORY, CURRENT STATES, PERSPECTIVES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 2, page no.c806-c828, February-2024, Available :http://www.jetir.org/papers/JETIR2402295.pdf

"BaTiO3 BASED FERROELECTRICS: HISTORY, CURRENT STATES, PERSPECTIVES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 2, page no. ppc806-c828, February-2024, Available at : http://www.jetir.org/papers/JETIR2402295.pdf