Melt synthesis and characterization of complexed oxide perovskites containing rare earths

Stability field and structural properties of intra-rare earth perovskites

“…Despite the usefulness of intra-rare earth perovskites, only few reports exist on their synthesis and characterization [4,[14][15][16][17] and a stability assessment of these compounds is lacking. A stability study of the LaREO 3 perovskitic structure as a function of temperature was thus undertaken.…”

Melt synthesis and characterization of complexed perovskite-oxides in the system of A2+(B+ 2/5B6+ 3/5)O3 - A3+(B+ 3/5B6+ 2/5)O3

“…For example, a Perovskite study by Wu and Davies [4,5] Sr(Li 2/5 W 3/5 )O 3 -x La(Li 3/5 W 2/5 )O 3 system. • is unknown peak.…”

“…Another advantage of the melt synthesis is to prevent the contamination from grinding media and containers during grindings. Figure 2 shows X-ray powder diffraction patterns of ( [4,5,9]. As a matter of fact, there exist not only Sr(Li 2/5 W 3/5 )O 3 and La(Li 3/5 W 2/5 )O 3 Perovskite components but also SrLaLiWO 6 and Sr 3 WO 6 (= Sr 2 (SrW)O 6 ) Perovskite.…”

“…The valence of B-ion is larger than that of A-ion. T [5]. We succeeded to synthesize series of Perovskite-type phases in the systems of GdScO 3 -BaTiO 3 , -SrTiO 3 , -CaTiO 3 , LaAlO 3 -BaTiO 3 , -SrTiO 3 , -CaTiO 3 , etc., which are the solid solutions in the systems of A 2+ B 4+ O 3 -A 3+ B 3+ O 3 .…”

Melt synthesis of Eu-doped oxide phosphors using arc-imaging furnace

“…1 We extended these studies to a series of ternary mixed oxides of the composition of AA BO 4 , structurally related to K 2 NiF 4 . Such complex oxides are not easy to synthesize using conventional solid-state reaction techniques because the reaction rates among oxides are so slow by solid-state diffusions to form homogeneous compounds or solid solutions.…”