Ferroelectric BaTiO3/BaZrO3 superlattices: X-ray diffraction, Raman spectroscopy, and polarization hysteresis loops

2010 ◽  
Vol 108 (8) ◽  
pp. 084104 ◽  
Author(s):  
M. El Marssi ◽  
Y. Gagou ◽  
J. Belhadi ◽  
F. De Guerville ◽  
Yu. I. Yuzyuk ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Hysteresis Loops ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals PREPARATION AND PHYSICAL PROPERTIES OF OPAL MATRICES WITH NANOPARTICLES OF TITANIUM AND IRON OXIDES

2016 ◽  
Vol 11 (6) ◽  
pp. 91-97
Author(s):  
M. I. Samoylovich ◽  
А. F. Belyanin ◽  
A. S. Bagdasaryan
Keyword(s):  
Electron Microscopy ◽  
Raman Spectroscopy ◽  
Hysteresis Loops ◽  
X Ray Diffraction ◽  
Iron Compounds ◽  
Dielectric Characteristics ◽  
X Ray ◽  
Composition And Structure ◽  
Synthesized Materials ◽  
Frequency Dependences

The article considers specific features of the formation of nanocomposites based on the lattice packing of SiO2 nanospheres (opal matrices) with clusters of titanium and iron compounds (FeTiO3, FeTi2O5, TiO2, Fe2O3) embedded into nanopores between spheres. For the formation of the nanocomposites samples of opal matrices with the sizes of single-domain regions > 0.1 mm3 were used. The diameter of the SiO2 nanospheres was ~260 nm. Nanocomposites with the volume > 1 cm3 and 10-15% of interspherical nanospacing filled by crystallites of titanium and iron compounds were obtained. The composition and structure of the nanocomposites were studied by electron microscopy, X-ray diffraction and Raman spectroscopy. The dependence of the composition of the synthesized materials on the conditions of their preparation is shown. Results of measurements of the frequency dependences (within the range 1 MHz - 3 GHz) of the magnetic and dielectric characteristics of the obtained nanostructures are presented. Hysteresis loops were studied for the obtained samples.

Raman spectroscopy and X-ray diffraction of lithium niobate at temperatures up to 1300○-4.80pt○C

2005 ◽  
Vol 126 ◽  
pp. 101-105 ◽  
Author(s):  
B. Moulin ◽  
L. Hennet ◽  
D. Thiaudière ◽  
P. Melin ◽  
P. Simon
Keyword(s):  
Raman Spectroscopy ◽  
Lithium Niobate ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Structural and Raman Vibrational Studies ofCeO2-Bi2O3Oxide System

2009 ◽  
Vol 2009 ◽  
pp. 1-4 ◽  
Author(s):  
L. Bourja ◽  
B. Bakiz ◽  
A. Benlhachemi ◽  
M. Ezahri ◽  
J. C. Valmalette ◽  
...  
Keyword(s):  
Solid Solution ◽  
Raman Spectroscopy ◽  
Phase Changes ◽  
Phase System ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vibrational Studies ◽  
Coprecipitation Route

A series of ceramics samples belonging to theCeO2-Bi2O3phase system have been prepared via a coprecipitation route. The crystallized phases were obtained by heating the solid precursors at600∘Cfor 6 hours, then quenching the samples. X-ray diffraction analyses show that forx<0.20a solid solutionCe1−xBixO2−x/2with fluorine structure is formed. For x ranging between 0.25 and 0.7, a tetragonalβ′phase coexisting with the FCC solid solution is observed. For x ranging between 0.8 and 0.9, a new tetragonalβphase appears. Theβ′phase is postulated to be a superstructure of theβphase. Finally, close tox=1, the classical monoclinicα Bi2O3structure is observed. Raman spectroscopy confirms the existence of the phase changes as x varies between 0 and 1.

scholarly journals Amorphization of a proposed sorbent of strontium, brushite, CaHPO4•2H2O, studied by X-ray diffraction and Raman spectroscopy

2021 ◽  
Vol 545 ◽  
pp. 152751
Author(s):  
Marie-Noëlle de Noirfontaine ◽  
Enrique Garcia-Caurel ◽  
Daniel Funes-Hernando ◽  
Mireille Courtial ◽  
Sandrine Tusseau-Nenez ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray

High pressure structural study of β-Ti3O5: X-ray diffraction and Raman spectroscopy

2012 ◽  
Vol 192 ◽  
pp. 356-359 ◽  
Author(s):  
Ye Wu ◽  
Qian Zhang ◽  
Xiang Wu ◽  
Shan Qin ◽  
Jing Liu
Keyword(s):  
Raman Spectroscopy ◽  
High Pressure ◽  
Structural Study ◽  
X Ray Diffraction ◽  
X Ray

Combinatorial (Ba,Sr)TiO3 thin film growth: X-ray diffraction and Raman spectroscopy

2009 ◽  
Vol 106 (3) ◽  
pp. 034108 ◽  
Author(s):  
H. Bouyanfif ◽  
J. Wolfman ◽  
M. El Marssi ◽  
Y. Yuzyuk ◽  
R. Bodeux ◽  
...  
Keyword(s):  
Thin Film ◽  
Raman Spectroscopy ◽  
Film Growth ◽  
Thin Film Growth ◽  
Tio3 Thin Film ◽  
X Ray Diffraction ◽  
X Ray

Combined in situ X-ray diffraction and Raman spectroscopy on majoritic garnet inclusions in diamonds

2002 ◽  
Vol 198 (3-4) ◽  
pp. 485-493 ◽  
Author(s):  
Martin Kunz ◽  
Philippe Gillet ◽  
Guillaume Fiquet ◽  
Violaine Sautter ◽  
Heinz Graafsma ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
X Ray Diffraction ◽  
Majoritic Garnet ◽  
X Ray
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