Perovskite formation sequence by B-site precursor method and dielectric properties of PFW-PFN ceramics

Phase development and dielectric characteristics of Pb[(Mg 1/3 Ta 2/3 ),Ti]O 3 ceramics with BaTiO 3 addition

“…The x values were chosen up to 0.8 at regular intervals of 0.2. A B-site precursor method [9][10][11][12] was adopted in the powder preparation, in order to assist the perovskite formation and thereby to improve the dielectric characteristics. Starting raw materials were high-purity (99.9%) chemicals of PbO, MgO, Ta 2 O 5 , BaCO 3 , and TiO 2 .…”

Dielectric properties of Zn- and/or Nb-substituted Pb[(Mg1/3Ta2/3),Ti]O3 ceramics

“…It is also well known that presence of the parasitic pyrochlore(s) in the perovskite matrix, even in small quantities, significantly degrades the dielectric properties [8,18,19]. Therefore, a two-step route of the B-site precursor method [20,21] (a more comprehensive concept for the widely adopted columbite process [22,23]) was employed in the present study in order to suppress the formation of unwanted pyrochlore(s) and thereby to improve the dielectric properties.…”

Phase formation and dielectric properties of (Pb,Ba)[(Zn1/2W1/2),Ti]O3 ceramics

“…Ceramic powders were prepared by a B-site precursor method [10,11], which is conceptually identical to (but a more comprehensive procedure than) the columbite process [12,13]. In the method, the (B 0 ,B 00 )O 2 -type precursor powders were synthesized first and then reacted with the A-site component(s) to develop the perovskite structure.…”