Abstract
The present work investigates microstructural, structural, ferroelectric and dielectric properties of Holmium, Ho3+, doped SrBi4Ti4O15 (SBT). Polycrystalline ceramics (SrBi4-xHoxTi4O15 SBHT, where x = 0, 0.02. and 0.03) were prepared by solid-state reaction method using high energy planetary ball mill. The surface morphology of all samples displayed dense microstructure and average grain size decreased with Holmium content increase. The XRD results of samples confirmed a single phase of SBT with orthorhombic crystal structure and a reduction in unit cell volume with the substitution of Holmium at B-site. The improvement in the structural and microstructural properties greatly enhanced the electric properties of SBHT. SBHT (x = 0.02) sample showed the improved ferroelectric properties (remnant polarization Pr = 1.63 μC/cm2 and Coercive field Ec = 0.51 kV/cm) making them suitable for ferroelectric applications. High Curie temperature (TC = 626 °C), elevated dielectric constant (εr = 236) and low loss (tanδ = 0.062) are obtained with the substitution of Ho (for x = 0.03) at B- site of SBT. These ceramics have high TC and improved thermal stability which makes these apt for the applications in high temperature sensors.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
