Multi-Parametric Exploration of a Selection of Piezoceramic Materials for Bone Graft Substitute Applications.

This work was devoted to the first multi-parametric unitary comparative analysis of a selection of sintered piezoceramic materials synthesised by solid-state reactions, aiming to delineate the most promising biocompatible piezoelectric material, to be further implemented into macro-porous ceramic scaffolds fabricated by 3D printing technologies. The piezoceramics under scrutiny were: KNbO, LiNbO, LiTaO, BaTiO, Zr-doped BaTiO, and the (BaCa)(TiZr)O solid solution (BCTZ). The XRD analysis revealed the high crystallinity of all sintered ceramics, while the best densification was achieved for the BaTiO-based materials via conventional sintering.

Microwave and Terahertz Properties of Spark-Plasma-Sintered ZrSnTiO Ceramics.

ZrSnTiO (ZST) powders synthesized by solid-state reaction were subject to processing by spark plasma sintering (SPS). A single-phase ceramic with a high relative density of 95.7% and 99.

Intrinsic Dielectric Loss in ZrSnTiO Ceramics Investigated by Terahertz Time Domain Spectroscopy.

Terahertz time-domain spectroscopy (THz-TDS) was employed for estimation of intrinsic dielectric loss of ZrSnTiO (ZST) ceramics. Single-phase ZST dielectric resonators (DRs) with various synthesis parameters and, consequently, different extrinsic losses, were prepared by conventional ceramic technology. Even though the DRs exhibit a similar microstructure, their quality factor ( is the inverse of dielectric loss tangent) measured in microwave (MW) domain at 6 GHz varies between 2500 and 8400.