Effects of Bi2O3 and Li2O B2O3Bi2O3SiO2 glass on electromagnetic properties of NiCuZn/BaTiO3 composite material at low sintering temperature

Abstract

Abstract Bi2O3 and Li2O B2O3 Bi2O3 SiO2 (LBBS) glass were introduced into Ni0.15Cu0.24Zn0.61Fe2O4 BaTiO3 ((NCZF-BTO) composite materials as sintering aids and sintered at 920 °C. Effects of Bi2O3 and LBBS glass on phases, microstructures, magnetic and dielectric properties of these composites were comparatively studied. In contrast to undoped composites, the addition of Bi2O3 or LBBS glass to samples enhances performance. Hence, when Bi2O3 content reached 1.5 wt%, saturation magnetization (4πMs) increased from 3825.4 to 4912.5 Gs, static permeability (μ0) increased from 53.2 to 197, and dielectric constant (e′) increased from 18.3 to 23.4. When LBBS glass content reached 1.5 wt%, 4πMs increased to 4145.6 Gs, μ0 increased to 79.3, e′ increased to 25.4. However, both coercivity (Hc) and dielectric loss (tan δ) were reduced. In short, Bi2O3 promoted magnetic properties, whereas LBBS glass promotes dielectric properties more effectively.