6 research outputs found
The upper Manganese doping limit and its effects on physical properties of lead-free Bi0.5Na0.5TiO3 ceramics
No full textThe lead-free piezoelectric, Bi0.5Na0.5TiO3, was synthesized with varying amounts of Manganese (Mn) doping (x = 0.00, 0.02, 0.05, 0.10, 0.15) on the B-site to replace Ti4+ cations. Herein, the doping limit of Mn is explored along with its effects on the structure and properties of these materials. The temperature-dependent dielectric properties of the materials with a higher manganese doping level have also been comprehensively investigated in the temperature range of 10–700 K. All samples show a high dielectric permittivity, εr ~ 4979–3626 at Tm ~ 550–600 K, along with a low dielectric loss. The magnetic study shows that doping with Mn leads to a complex magnetic state, where there is possible clustering of Mn ions, with inter- or intra-cluster interactions becoming dominant at approximately 50 K. These samples may be considered as alternative to lead-free materials with magneto-electric coupling.M. Q. Awan would like to acknowledge Higher Education
Commission (HEC) Pakistan for providing funding under “Indigenous
5000 Ph.D. fellowship Program” and six months research visit to
Research School of Chemistry, ANU Australia under International
Research Support Initiative Program (IRSIP) scheme. Author also pay
special thanks to all respected members of RSC, ANU Australia for
providing research facilities for this work and awarding two months
further funding to complete that research project
Effect of substitution of K+ ions on the structural and electrical properties of nanocrystalline MgAl2O4 spinel oxide
No full textEffect of substitution of Co2+ ions on the structural and electrical properties of nanosized magnesium aluminate
No full textStructure, dielectric and ferroelectric properties of lead free (K,Na)(Nb)O3-xBiErO3 piezoelectric ceramics
No full textOverexpression of EGFR in Oral Premalignant Lesions and OSCC and Its Impact on Survival and Recurrence
No full textStructure, dielectric and ferroelectric properties of lead-free (Ba,Ca)(Ti,Zr)O3-xBiErO3 piezoelectric ceramics
No full textLead-free piezoelectric ceramics [(Ba0.85Ca0.15)(Ti0.90Zr0.10)O3-xBiErO3 (BCTZ-xBE)] doped with a new doping material BiErO3 (BE) has been synthesized successfully via solid state reaction technique, and their structural, dielectric, ferroelectric, and piezoelectric properties have been investigated. A high dielectric constant with very low dielectric loss and high remnant polarization followed by a low coercive field has been obtained with the addition of x = 0.5 BE. Bulk ferroelectric hysteresis loops were obtained with a maximum polarization Pmax = 26.7 μC/cm2 and a saturation polarization Ps = 16.65 μC/cm2 along with a coercive field of Ec ≈ 2.45 kV/cm. Results demonstrate an induced-strain increasing from ~ 0.11 to ~ 0.24 for x = 0.5, excellent piezoelectricity with d33 = 560 pC/N, kp = 56%, Qm = 196, εm = 11,200 and tanδ = 0.01
