NTCR behavior of Sm-substituted barium zirconium titanate nanocrystalline solid solution

Electrical properties and microwave dielectric behavior of holmium substituted barium zirconium titanate ceramics

“…Nevertheless, as the grain size decreases, the number of charge carriers decreases due to the continued electron loss to the grain boundaries. On the other hand, our previous study shows that the grain size of BZT decreases as the rare earth ions content increases [13,14] which indicates that Ho substituted BZT used in this work has the smallest grains; therefore, BHZT has the highest bulk resistance. Moreover, as the grain size decreases the area of the grain boundaries and electrode interface increases, and this leads to an increase in the grain boundaries-electrode resistance due to the increase of the spatial charge density.…”

“…In our previous studies on investigation of rare earth ions substituted BZT ceramics prepared by the solid state reaction revealed formation of single phase compound and interaction of rare earth ions with BZT lattice [13]. The compositions with various rare earth ions substituted BZT exhibited an NTCR behavior for the fabrication of highly sensitive thermistor [14].…”

Microstructure and transport properties of multiwall carbon nanotube-reinforced barium zirconium titanate ceramics

“…After extensive literature review and the analysis of the importance of CNT-reinforced electroceramics in many applications, we performed our studies to improve their electrical behaviour by reinforcing MWCNTs into the (Ba 1−x Re x ) (Zr 0.52 Ti 0.48 )O 3 ceramics [20][21][22][23][24][25][26]. The ceramic samples with the chemical composition (Ba 1−x Ce x )(Zr 0.52 Ti 0.48 )O 3 (BCZT) where x = 0, 0.1 and 0.2 were selected as ceramic matrices due to their better electrical behaviour.…”