Enhanced structural, dielectric, ferroelectric, and piezoelectric properties of (1−x)Ba0.9Sr0.1TiO3–(x)Ba0.7Ca0.3TiO3 ceramics derived using mechano‐chemical activation technique. Issue 11 (17th July 2017)

• Record Type: Journal Article
• Authors: Jain, Aditya; Panwar, Amrish K.; Saroha, Rakesh; Jha, A. K.
• Is Part Of: Journal of the American Ceramic Society. Volume 100:Issue 11(2017)
• Page Start: 5239
• Page End: 5248
• Publication Date: 2017-07-17
• Subjects: dielectric -- energy storage -- ferroelectric -- microstructure -- piezoelectric; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.15061
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract: The effect of Ba0.7 Ca0.3 TiO3 (BCT) substitution on the structural, dielectric, ferroelectric, and piezoelectric properties of mechano‐chemically synthesized lead‐free (1− x )Ba0.9 Sr0.1 TiO3 ‐( x )Ba0.7 Ca0.3 TiO3 ( x =0.0, 0.10, 0.20, 0.35, and 0.50) ceramics have been investigated. XRD patterns confirms the formation of tetragonal phase with P4mm space group. The results indicate a strong influence of BCT substitution on the structural and electrical properties of Ba0.9 Sr0.1 TiO3 (BST) ceramic. BST–BCT ceramic for x =0.35 have shown high dielectric constant εm ~21 800, high remnant polarization P r ~10.16 μC/cm 2, large piezoelectric charge constant D 33 ~293 pC/N, large piezoelectric voltage constant g 33 ~5.80 mV·m/N, and highest dielectric breakdown strength E bd ~224 kV/cm among the five synthesized samples. The correlation between structural, dielectric, ferroelectric, and piezoelectric properties of the BST ceramic with increasing BCT content have been systematically described on the basis of domain wall motion and grain size effect.