Dielectric Properties of Ba(Zr,Ti)O₃‐Based Ferroelectrics for Capacitor Applications

Abstract

The purpose of the present investigation is to describe the influence of the processing parameters on the dielectric behavior of manganese-doped Ba(Ti 1؊x Zr x )O 3 ceramics, particularly variations in the small-signal aging rate, temperature characteristic, and hysteresis. In this paper, the aging behavior of base-metal electrode materials above the temperature of the permittivity maximum (T M ), including the influence of the zirconium content and annealing conditions, is described for the first time. The aging rate at temperatures greater than T M decreases as the oxygen partial pressure increases during annealing and the zirconium content increases, whereas the aging rate exhibits a maximum at temperatures much less than T M . The behavior is explained in terms of a diffuse phase transition. Hysteresis-loop deformation is observed during aging.

Piezoelectric properties and temperature stability of Mn-doped Pb(Mg1/3Nb2/3)-PbZrO3-PbTiO3 textured ceramics

“…All the component systems corresponding to PMN, BMN, BZ have been shown to have much lower T C than BT. [17][18][19] Thus, the variation of Ba/Pb concentration across this interface region results in the wide depoling temperature range which explains the broad pyroelectric current peak in Fig. 2(a) as schematically depicted in Fig.…”

Effect of grain size on the electrical properties of (Ba,Ca)(Zr,Ti)O3 relaxor ferroelectric ceramics

“…1,2 Recently, Ba͑Zr y Ti 1−y ͒O 3 (BZT) has been chosen as an alternative to BST in the fabrication of ceramic capacitors because Zr 4+ is chemically more stable than Ti 4+ . [3][4][5][6][7][8][9] The solid solution of barium titanate ͑BaTiO 3 ͒ and barium zirconate ͑BaZrO 3 ͒, Ba͑Zr y Ti 1−y ͒O 3 (BZT), shows a lot of analogies to BST solid solution. 2 The nature of the ferroelectric phase transition at the Curie temperature ͑T C ͒ of BZT bulk ceramics is known to change strongly with the Zr content.…”

Microstructural and Electrical Study of (BA0.6 SR0.4)(ZR1-X Tix)o3 Ceramics

“…Structural details of the samples are discussed elsewhere [15]. Figure 1 displays the scanning electron micrographs of the synthesized samples.…”