Phase formation and dielectric properties of 0.90Pb(Mg1/3Nb2/3)O3–0.10PbTiO3 ceramics prepared by a new sol–gel method

Phase formation and microstructure of Nd+3 doped Pb(Mg1/3Nb2/3)O3 prepared by sol–gel method

“…Considering the radii of ions in our doped PMN system (1.20, 0.74, 0.69, and 0.995 Å for Pb +2 , Mg +2 , Nb +5 , Nd +3 respectively), it is reasonable to expect that Nd +3 should preferentially occupy the Pb +2 lattice [8]. The results given in Fig.…”

“…This method provides high degree of homogeneity and stoichiometry especially for multicomponent systems in addition to allowing doping on a molecular scale. Hence, there is considerable interest in the preparation of PMN ceramics using sol-gel method [6][7][8][9][10][11].…”

“…This method provides high degree of homogeneity and stoichiometry especially for multicomponent systems in addition to allowing doping on a molecular scale. Hence, there is considerable interest in the preparation of PMN ceramics using sol-gel method [6][7][8][9][10][11].The phase formation and electrical properties of piezoelectric ceramics can be modified by use of dopants. Effects of rare earth elements (RE) doping on the phase formation and electrical properties of piezoelectric ceramics such as barium titanate and lead zirconate titanate are well studied [12][13][14][15].…”

Preparation, structure and ferroelectric properties of Ba(Fe0.5Nb0.5)O3 powders by sol–gel method

“…The lead-based complex perovskites Pb(Sc 1/2 Nb 1/2 )O 3 , Pb(Mg 1/3 Nb 2/3 )O 3 and Pb(Fe 1/2 Nb 1/2 )O 3 have attracted much attention for their characteristic dielectric nature, i.e. high dielectric constant and wide temperature stability around the broad diffuse phase transition [2][3][4]8]. But, most such materials contain lead which pollutes the environment.…”

An ethylene glycol-based new sol-gel route to multiferroic (1–x)LaCrO3–xBiCrO3 solid solution

“…In this work, ethylene glycol is chosen as the solvent because of its ability to dissolve all the starting reagents and to coordinate and crosslink the cations 18 . It has been proved to be an effective solvent for the synthesis of complex oxides such as (1-x)Pb(Mg 1/3 Nb 2/3 )O 3 -xPbTiO 3 , [19][20][21][22] and Sr 2 Bi 2 Ta 2 O 9 . 23 Furthermore, the fine precursor powder obtained after the pyrolysis process, which possesses a large specific surface area and high reactivity, is advantageous in producing high-density ceramics, which is also necessary for achieving enhanced properties.…”