Phase Formation in the Nd2Ti2O7–SrTiO3System at 1350°C in the Presence of V2O5, CuV2O6, or SrCuO2

A-Site Cation-Vacancy Ordering in Sr1−3x/2LaxTiO3: A Study by HRTEM

“…The manifestation of the superstructure in the XRD and ED patterns of Sr \V La V TiO is similar to that reported previously (13) for the closely related SrTiO }Nd Ti O system, thus suggesting that the model of cation-vacancy ordering described above might also be valid in that system.…”

Electronic structure of layered titanate Nd2Ti2O7

“…As to physical properties, Nd 2 Ti 2 O 7 is characterized by an extremely high Curie temperature T C > 1500°C, spontaneous polarization P s = 9 lC/cm 2 , high permittivity e = 31-47 [1,[3][4][5] and high piezoelectric properties [1,6] that holds promises for using this compound for the manufacture of ferroelectric random access memory (FRAM) elements [7][8][9][10][11]. Thermal stability up to T$1400°C and low dielectric losses open the way for a wide use of NTO as a key component in the fabrication of microwave ceramics and nanocomposites [12][13][14][15][16][17][18][19][20][21][22]. High refractive indices n a = 2.15, n b = 2.27 and n c = 2.23 (k = 526.5 nm) and a reasonable level of nonlinear optical susceptibility were measured for NTO [4,[23][24][25].…”

Electrical properties of the arc-melted, layered-perovskite system NdnTinO3n+2 with n=4.5–6.5

“…Electron microscopy has shown that well-ordered Nd n Ti n O 3n+2 phases with n = 4, 5, 6 can be prepared by the technique of arcmelting [6][7][8][9] as well as materials composed of ordered and disordered intergrowths with varying slab thickness. When the nominal value of the composition is greater than Nd 6 Ti 6 O 20 , this latter structure coexisted with a non-stoichiometric perovskite phase with approximate composition NdTiO 3.…”