Structural evolution in three and four-layer Aurivillius solid solutions: A comparative study versus relaxor properties

2008 ◽  
Vol 10 (2) ◽  
pp. 177-185 ◽  
Author(s):  
Jenny Tellier ◽  
Philippe Boullay ◽  
Dorra Ben Jennet ◽  
Daniele Mercurio
Keyword(s):  
Comparative Study ◽  
Solid Solutions ◽  
Structural Evolution

Comparative study of luminescent properties of Bi1-xPrxGeSbO6 and La1-xPrxGa0.5Sb1·5O6 (x = 0–0.5) solid solutions with rosiaite structures

2021 ◽  
Vol 232 ◽  
pp. 117869
Author(s):  
A.V. Egorysheva ◽  
S.V. Golodukhina ◽  
S.A. Khrushchalina ◽  
P.A. Ryabochkina ◽  
A.D. Taratynova ◽  
...  
Keyword(s):  
Comparative Study ◽  
Solid Solutions ◽  
Luminescent Properties

scholarly journals Studying the structural and electronic effects of substituted (Bi0.5Na0.5)TiO3

2014 ◽  
Vol 70 (a1) ◽  
pp. C1522-C1522
Author(s):  
Peter Blanchard ◽  
Brendan Kennedy ◽  
Chris Ling
Keyword(s):  
Solid Solutions ◽  
Structural Changes ◽  
Structural Evolution ◽  
Rhombohedral Phase ◽  
Rhombohedral Structure ◽  
Electronic Effects ◽  
Spectra Analysis ◽  
Space Group ◽  
Industry Standard ◽  
Made In

Significant efforts have been made in the development of (Bi0.5Na0.5)TiO3 ferroelectrics as an alternative to the lead-based industry standard PbTi1-xZrxO3.[1] It has also been shown that doping the A- and B-site of (Bi0.5Na0.5)TiO3 can greatly improve the ferroelectric behavior of these materials,[2] possibly due to the formation of two or more ferroelectric phases at a morphotropic phase boundary (MPB). As such, there is a significant interest in understanding the structural changes in (Bi0.5Na0.5)TiO3-based solid solutions. (Bi0.5Na0.5)TiO3 was originally described as adopting a rhombohedral structure in space group R3c, However, the accuracy of this description has been greatly debated. It was recently suggested that (Bi0.5Na0.5)TiO3 actually adopts a monoclinic structure in space group Cc.[3] Given this recent controversy, we investigated the structural evolution of (Bi0.5Na0.5)TiO3-based solid solutions, particularly the (Bi0.5Na0.5)Ti1-xZrxO3 and (1-x)(Bi0.5Na0.5)TiO3–xBiFeO3 solid solutions., using both diffraction and spectroscopy techniques. Diffraction measurements on (Bi0.5Na0.5)TiO3 confirm that both monoclinic Cc and rhombohedral R3c phases are present at room temperature. Diffraction analysis showed that doping (Bi0.5Na0.5)TiO3 with a small amount of (Bi0.5Na0.5)ZrO3 and BiFeO3 can stabilizes the rhombohedral phase. The Ti/Fe K-edge and Zr L3-edge XANES spectra analysis was performed to determine the effects doping has on the local displacement of the B-site cations.

Exploring wet chemistry approaches to ZnFe2O4 spinel ferrite nanoparticles with different inversion degrees: a comparative study

2019 ◽  
Vol 6 (6) ◽  
pp. 1527-1534 ◽  
Author(s):  
Paolo Dolcet ◽  
Kristin Kirchberg ◽  
Alice Antonello ◽  
Christian Suchomski ◽  
Roland Marschall ◽  
...  
Keyword(s):  
Low Temperature ◽  
Comparative Study ◽  
Spinel Ferrite ◽  
Structural Evolution ◽  
Ferrite Nanoparticles ◽  
Wet Chemistry

ZnFe2O4 was synthesised through three different low-temperature routes to study the effect on the structural evolution of the compounds.

Magnetic Transitions in the Double Perovskite Sr2FeRe1-xFexO6(0≤X≤0.5)

2008 ◽  
Vol 1119 ◽  
Author(s):  
Haitao Gao ◽  
Vadim Ksenofotov ◽  
Joachim Barth ◽  
Martin Panthöefer ◽  
Felser Claudia ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Transport Properties ◽  
Solid Solutions ◽  
Magnetic Moment ◽  
Parent Compound ◽  
Structural Evolution ◽  
Double Perovskite ◽  
Magnetic Transitions ◽  
Mössbauer Data ◽  
Redox Buffer

AbstractThe synthesis, structure, and magnetic and transport properties of solid solutions Sr2FeRe1-xFexO6 (0≤x≤0.5) are reported. A structural evolution in the solid solutions from a double perovskite to perovskite is observed with increasing Fe/Re disorder. Except for the metallic parent compound all members of the series are semiconducting. For the Fe-doped samples a change from ferrimagnetic interactions in the parent compound to a complex superposition of ferrimagnetic and antiferromagnetic interactions was observed. The magnetic moment decreases with x, whereas the Curie temperature TC remains unaffected. The magnetic and Mössbauer data suggest Fe to act as a redox-buffer.

Comparative study of the magnetic properties of the Yb(Gd)Te, La(Gd)Te and (La,Y)(Gd)Te solid solutions

1995 ◽  
Vol 225 (1-2) ◽  
pp. 159-162 ◽  
Author(s):  
S. Merah ◽  
D. Ravot ◽  
A. Percheron-Guegan ◽  
A. Mauger ◽  
O. Gorochov
Keyword(s):  
Magnetic Properties ◽  
Comparative Study ◽  
Solid Solutions

Comparative Study of Cation Ordering Effects in Single Crystals of 1:1 and 1:2 Complex Perovskites Solid Solutions

2004 ◽  
Vol 298 (1) ◽  
pp. 267-274 ◽  
Author(s):  
I. P. Raevski ◽  
S. A. Prosandeev ◽  
S. M. Emelyanov ◽  
V. G. Smotrakov ◽  
V. V. Eremkin ◽  
...  
Keyword(s):  
Comparative Study ◽  
Single Crystals ◽  
Solid Solutions ◽  
Cation Ordering ◽  
Ordering Effects ◽  
Complex Perovskites

ChemInform Abstract: Structural Evolution and Properties of Solid Solutions of Hexagonal InMnO3 and InGaO3.

ChemInform ◽  
2011 ◽  
Vol 42 (25) ◽  
pp. no-no
Author(s):  
Dmitriy A. Rusakov ◽  
Alexei A. Belik ◽  
Stanislav Kamba ◽  
Maxim Savinov ◽  
Dmitry Nuzhnyy ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Structural Evolution

Surface Reconstruction of (123) and (111) Ge(Sn) Solid Solutions Induced by Tin Segregation

1998 ◽  
Vol 05 (01) ◽  
pp. 265-268 ◽  
Author(s):  
A. Rolland ◽  
A. Rouabah ◽  
F. Cabané
Keyword(s):  
Phase Diagram ◽  
Comparative Study ◽  
Surface Reconstruction ◽  
Solid Solutions ◽  
Surface Segregation ◽  
Fair Agreement ◽  
Kinetic Curves ◽  
Surface Reconstructions ◽  
Kinetics Of

We present a comparative study of tin segregation onto the (123) and (111) surfaces of a Ge(Sn)- 0.5 at. % bicrystal using the AES technique. Between 350°C and 450°C, the maximum segregated tin amount, about 1.25 monolayer, does not vary with the orientation of the surface or the temperature. This indicates that attractive Sn-Sn forces are involved in the segregated phase which is in fair agreement with the Ge-Sn phase diagram. The shape of the kinetic curves depends on the orientation. On the (111) surface, the formation of various structures in equilibrium with the bulk is correlated with surface reconstructions. First, Sn atoms take the place of Ge adatoms to form a 2D phase; then, Sn segregates in other superficial sites, which leads to the nucleation of denser 2D phases, such as (7 × 7) structure. On the (123) surface, Sn atoms take the place of Ge atoms in quasisubstitutional sites of the superficial layers; the kinetics of surface segregation is not sensitive to sub monolayer structures.

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