scholarly journals Structural Evolution in Hollandite Solid Solutions Across the A‐Site Compositional Range from Ba1.33Ga2.66Ti5.34O16to Cs1.33Ga1.33Ti6.67O16

2016 ◽  
Vol 99 (12) ◽  
pp. 4100-4106 ◽  
Author(s):  
Yun Xu ◽  
Mikhail Feygenson ◽  
Katharine Page ◽  
Lindsay Shuller Nickles ◽  
Kyle S. Brinkman
Keyword(s):  
Solid Solutions ◽  
Structural Evolution ◽  
Compositional Range ◽  
A Site

Structural Evolution of Li[sub 3+x]Fe(MoO[sub 4])[sub 3] upon Lithium Insertion in the Compositional Range 0≤x≤1

2006 ◽  
Vol 153 (2) ◽  
pp. A275 ◽  
Author(s):  
M. E. Arroyo y de Dompablo ◽  
M. Alvarez-Vega ◽  
C. Baehtz ◽  
U. Amador
Keyword(s):  
Structural Evolution ◽  
Lithium Insertion ◽  
Compositional Range

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.

Structural investigation of the A-site vacancy in scheelites and the luminescence behavior of two continuous solid solutions A1–1.5xEux□0.5xWO4 and A0.64–0.5yEu0.24Liy□0.12–0.5yWO4 (A = Ca, Sr; □ = vacancy)

2015 ◽  
Vol 44 (13) ◽  
pp. 6175-6183 ◽  
Author(s):  
Pengfei Jiang ◽  
Wenliang Gao ◽  
Rihong Cong ◽  
Tao Yang
Keyword(s):  
Solid Solutions ◽  
Structural Characterization ◽  
Structural Investigation ◽  
Vacancy Mechanism ◽  
Charge Balance ◽  
A Site ◽  
Site Vacancy ◽  
Luminescence Behavior

A detailed structural characterization on A1–1.5xEux□0.5xWO4 and A0.64–0.5yEu0.24Liy□0.12–0.5yWO4 (A = Ca, Sr; □ = vacancy) prove the A-site vacancy mechanism for charge balance.

Influence of A-site deficiency on structural evolution of Pr2-xNiO4+δ with temperature

2019 ◽  
Vol 342 ◽  
pp. 115056 ◽  
Author(s):  
De Ning ◽  
Aykut Baki ◽  
Tobias Scherb ◽  
Jia Song ◽  
Andrea Fantin ◽  
...  
Keyword(s):  
Structural Evolution ◽  
A Site

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.

Some thermodynamic aspects of dissolution of solid solutions of hydroxylapatites of phosphorus and arsenic

1979 ◽  
Vol 57 (19) ◽  
pp. 2662-2664 ◽  
Author(s):  
T. S. B. Narasaraju ◽  
U. S. Rai
Keyword(s):  
Solid Solutions ◽  
Free Energies ◽  
Compositional Range ◽  
Calcium Phosphorus ◽  
Ph Range ◽  
Saturated Solutions

The solubility equilibria of synthetic samples of hydroxylapatite, its arsenic isomorph, and a series of their solid solutions, spread over the entire compositional range, were investigated at 37 °C in the pH range 5.0 to 7.6 in buffered systems through microanalytical determinations of calcium, phosphorus, and arsenic in their saturated solutions. From the ionic products of the samples so determined their stoichiometric dissolution was established and their free energies of solution evaluated.

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

Lithium ion conductivity of A-site deficient perovskite solid solutions

1999 ◽  
Vol 81-82 ◽  
pp. 777-781 ◽  
Author(s):  
Yasuhiro Harada ◽  
Hiroyuki Watanabe ◽  
Jun Kuwano ◽  
Yasukazu Saito
Keyword(s):  
Solid Solutions ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
Lithium Ion Conductivity ◽  
A Site
Sign in / Sign up

Export Citation Format

Share Document