Structural, lattice vibrational, optical and microwave dielectric studies on Ca1−Sr MoO4 ceramics with scheelite structure

Synthesis, structure, and thermal stability of new scheelite-type Pb1−3x□xPr2x(MoO4)1−3x(WO4)3x ceramic materials

“…10). Similar dependence of E g (nonlinear) on x parameter was observed for scheelite Ca 1-x Sr x MoO 4 solid solution [55].…”

Non-aqueous metathesis as a general approach to prepare nanodispersed materials: Case study of scheelites

“…In the series of Sr-Ca tungstates, Khobragade et al found an increase of E g from pure SrWO 4 (5.8 eV) to CaWO 4 (5.93 eV) [76] whereas an opposite trend was observed by Ramarao and coll. [77] of E g decrease from SrMoO 4 (3.51 eV) to Table S6.…”

Microwave dielectric properties of MgTiO3-based ceramics

“…Most of these studies discussed the relationships between the dielectric properties of MgTiO 3 -based ceramics and extrinsic factors, such as the presence of a secondary phase, the density, and microstructure [5]. However, fundamental studies should be performed to understand the dependence of the microwave dielectric properties on the structural characteristics [6], which enables control of and improvements in the microwave dielectric properties of MgTiO 3 -based ceramics. MgTiO 3 ceramics with ABO 3 ilmenite structure are composed of hexagonal close-packed oxygen layers with cations occupying two thirds of the octahedral sites available.…”

“…MgTiO 3 ceramics with ABO 3 ilmenite structure are composed of hexagonal close-packed oxygen layers with cations occupying two thirds of the octahedral sites available. There is an equal number of divalent (A 2 þ ) and tetravalent (B 4 þ ) cations within AO 6 and BO 6 octahedra in the ABO 3 ilmenite structure. AO 6 and BO 6 octahedra share faces along the c-axis.…”

“…There is an equal number of divalent (A 2 þ ) and tetravalent (B 4 þ ) cations within AO 6 and BO 6 octahedra in the ABO 3 ilmenite structure. AO 6 and BO 6 octahedra share faces along the c-axis. Moreover, AO 6 or BO 6 octahedra share an edge with the same type of oxygen octahedra along the a-axis.…”