Crystal structure and piezoelectric properties of xPb(Mn1/3Nb2/3)O3–(0.2−x)Pb(Zn1/3Nb2/3)O3–0.8Pb(Zr0.52Ti0.48)O3 ceramics

Identification and Effect of Secondary Phase in MnO2‐Doped 0.8Pb(Zr0.52Ti0.48)O3–0.2Pb(Zn1/3Nb2/3)O3 Piezoelectric Ceramics

“…Previous studies have suggested that fast grain growth of Mn‐doped PZT–PZN is related to the formation of oxygen vacancies that promotes the lattice diffusion . However, in this study, as the Mn ions are considered to substitute at Zn sites, we suggest that the system consists of matrix PZT–PZN–PMnN phase and “secondary ZnO phase.” Gao et al . have investigated the microstructure of 0.8Pb(Zr 0.52 Ti 0.48 )O 3 ‐ x Pb(Mn 1/3 Nb 2/3 )O 3 ‐(0.2− x )Pb(Zn 1/3 Nb 2/3 )O 3 piezoelectric ceramics that are similar to our PZT–PZN–PMnN phase, but without ZnO secondary phase.…”

“…This change in T c might be related to shift from tetragonal‐rich to rhombohedral‐rich phase as MnO 2 was added to PZT–PZN. Gao et al . explained that decrease in T c of PZT–PZN–PMnN with increasing PMnN content was due to the lower T c of PMnN than that of PZN.…”

Electrical Properties of CuO-Doped PZT-PZN-PMnN Piezoelectric Ceramics Sintered at Low Temperature

“…The general formula of the studied material was 0.8Pb(Zr 0.48 Ti 0.52 )O 3 The PZN based ceramic materials with the a pure perovskite structure are very difficult to prepare by conventional ceramic processing, because of the high polarizability of Pb 2+ and its interaction with Zn 2+ cations, resulting the formation of the pyrochore phase and they will be detrimental to the physical properties of lead based ferroelectric ceramics [15]. Therefore, in this work, we combined the conventional solid-state reaction method and the B-site Oxide mixing technique (BO) for fabricate ceramic samples.…”

“…In recent years, many material scientists are interested in research and application of multi-component piezoelectric ceramics combine PZT with relaxor ferroelectrics, such as Pb(Zr 0.48 Ti 0.52 )O 3 (PZT-PZN-PMnN), etc., due to their excellent piezoelectric properties and many applications in piezoelectric actuators and transformers [1]- [6]. These ceramics often have large dielectric constant ε, high mechanical quality factor (Q m ), high electromechanical coupling factor (k p ), high Curie temperature and low dielectric loss factor (tanδ).…”

Structure and Electrical Properties of Fe<sub>2</sub>O<sub>3</sub>-Doped PZT-PZN-PMnN Ceramics

“…The addition of small amounts of such relaxor materials was found to be beneficial for the electrical properties of PZT-based ceramics due to the formation of fine and uniform rhombohedral domains along tetragonal ones [4] [5]. Recently, it was observed that both the dielectric and piezoelectric properties of these PZT-relaxor materials are strongly influenced by the addition of other additives such as La, ZnO, CuO, MnO 2 and Fe 2 O 3 [2] [4] [6]- [8].…”