Effect of MgO on piezoelectric, dielectric and ferroelectric properties of (Ba1−x Mgx) (Ti0.98 Zr0.02) O3 lead-free piezoceramics

Chandraiah, M and Sahoo, B and Panda, PK (2015) Effect of MgO on piezoelectric, dielectric and ferroelectric properties of (Ba1−x Mgx) (Ti0.98 Zr0.02) O3 lead-free piezoceramics. Journal of Materials Science: Materials in Electronics, 26 (9). pp. 6801-6806. ISSN 09574522

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Abstract

Effect of MgO on ferroelectric, dielectric, piezoelectric properties of (Ba1−x Mgx) (Ti0.98 Zr0.02) O3, (x = 0.00, 0.01, 0.015, 0.02 and 0.03 mol) lead free piezoceramics was studied. The powders were prepared by conventional solid state reaction method, calcined at 1000 °C for 4 h. XRD patterns of the calcined powders show phase pure perovskite structure. The calcined powders were de-agglomerated, pressed into pellets and sintered at 1150 °C for 3 h. Scanning electron microscopy studies of thermally etched sintered pellets show sub-micron sized grains for undoped BZT and 3–5 μm sized grains for 0.01 mol MgO doped BZT. Energy dispersive X-ray analysis of MgO doped BZT sample confirms the presence of dopants very close to their stoichiometric compositions. The piezoelectric charge constant (d33 = 164 pC/N), dielectric constant (K = 2348) and remnant polarization (Pr = 3.3 μC/cm2) were maximum for BZT samples containing 0.01 mol of MgO.

Item Type:	Article
Subjects:	CHEMISTRY AND MATERIALS > Chemistry and Materials (General) CHEMISTRY AND MATERIALS > Composite Materials
Depositing User:	Mrs SK Pratibha
Date Deposited:	26 Jun 2018 10:06
Last Modified:	26 Jun 2018 10:06
URI:	http://nal-ir.nal.res.in/id/eprint/12842

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