Structural Characteristics of Sr0.61Ba0.39Nb2O6/MgO(001) Thin Films Grown by RF-Cathode Sputtering

Dielectric and Ferroelectric Properties of Thin Heteroepitaxial Films of SBN-50

“…2) that the average lateral size of crystallites is ~66 nm, and that of ferroelectric domains is ~100 nm. The studied films of bariumstrontium niobate, as shown in [8,11], grow according to the Volmer-Weber mechanism (stage of threedimensional nucleation → overgrowth into a continuous film), i.e., the surface relief is not the result of the columnar or polycrystalline structure of the film, but a consequence of the mechanism of their growth [2], which explains the larger size of the domains.…”

Preparation, structural features, elemental composition of and dielectric properties of a two-layer structure based on thin films of multiferroic BiFeO-=SUB=-3-=/SUB=- and ferroelectric (Sr, Ba)Nb-=SUB=-2-=/SUB=-O-=SUB=-6-=/SUB=-

“…The films were sprayed by high-frequency spraying in an oxygen atmosphere at the " Plasma 50−SE" installation using technological modes [8,9]. X-ray diffraction studies were carried out on a multifunctional X-ray complex " RIKOR" (goniometer with increments up to 0.001 • (Crystal Logic Inc.); X-ray tube BSV21-Cu (JSC " Svetlana-Roentgen"), scintillation detector (LLC ITC "…”

“…A promising set of properties, from our point of view, can be realized in heterostructures based on materials with the structure of perovskite and tetragonal tungsten bronzes, in particularbismuth ferrite (BiFeO 3 (BFO)multiferroic with T C = 1083 K,T N = 643 K, P ∼ 100 µC/cm 2 ) and barium-strontium niobate ((Ba, Sr)Nb 2 O 6 (SBN)uniaxial ferroelectric, successfully used depending on the composition in pyropriemniki, nonlinear optics and optical modulators [7]). The possibility of obtaining heteroepitaxial BFO and SBN films under sufficiently similar technological conditions using a single-stage RF cathode sputtering method is shown in [8,9]. In this paper, we present the results of studies of the phase composition, distribution profile of structure-forming elements, crystal structure and dielectric properties of the BFO/SBN/MgO(001) heterostructure.…”

Structure, dielectric and ferroelectric properties of Ba-=SUB=-2-=/SUB=-NdFeNb-=SUB=-4-=/SUB=-O-=SUB=-15-=/SUB=- multiferroic thin films

“…For the synthesis of thin films of complex oxides, various single-and multi-stage methods are used, while oxygen and argon are predominantly used as working gases [8,9]. One important method thereof is a singlestage method of gas-discharge HF-sputtering in an oxygen atmosphere [9], which allows fabricating films of complex oxides of various structural perfection, including ones with the TTB structure [10,11].…”

“…By using this method, we could produce polycrystalline, textured and single-crystal thin films of Sr 0.5 Ba 0.5 Nb 2 O 6 [11] and Sr 0.61 Ba 0.39 Nb 2 O 6 [10], as well as two-layer structures based thereon in combination with (Ba, Sr)TiO 3 [12] and BiFeO 3 [13]. Taking into account that a structure frame and parameters of a lattice cell for Ba 2 LnFeNb 4 O 15 and S x Ba 1−x Nb 2 O 6 are sufficiently close (for example, for Sr 0.5 Ba 0.5 Nb 2 O 6 a = 12.46 Å, c = 3.944 Å; for Ba 2 LnFeNb 4 O 15a = 12.477 Å, c = 3.923 Å), from our point of view this method can be efficiently used for producing various heterostructures with involvement of Ba 2 LnFeNb 4 O 15 , too.…”