Emergence of a Cubic Phase Stabilized by Intermetallic Charge Transfer in (1 – x)PbVO3–xBiCoO3 Solid Solutions

2020 ◽  
Vol 32 (16) ◽  
pp. 6892-6897
Author(s):  
Hajime Yamamoto ◽  
Kaoru Toda ◽  
Yuki Sakai ◽  
Takumi Nishikubo ◽  
Ikuya Yamada ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solid Solutions ◽  
Cubic Phase

scholarly journals Study of charge transfer mechanism and dielectric relaxation of all-inorganic perovskite CsSnCl3

RSC Advances ◽  
2021 ◽  
Vol 11 (35) ◽  
pp. 21767-21780
Author(s):  
Mohamed Ben Bechir ◽  
Mohamed Houcine Dhaou
Keyword(s):  
Charge Transfer ◽  
Dielectric Relaxation ◽  
Monoclinic Phase ◽  
Conduction Mechanism ◽  
Small Polaron ◽  
Cubic Phase ◽  
Inorganic Perovskite ◽  
Charge Transfer Mechanism ◽  
Large Polaron ◽  
Olpt Model

The conduction mechanism in CsSnCl3 is interpreted through the following two approaches: the non-overlapping small polaron tunneling (NSPT) model (monoclinic phase) and the overlapping large polaron tunneling (OLPT) model (cubic phase).

Synthesis of ZrO2–Y6WO12 solid solution powders by a polymerized complex method

1998 ◽  
Vol 13 (4) ◽  
pp. 939-943 ◽  
Author(s):  
Junfeng Ma ◽  
Masahiro Yoshimura ◽  
Masato Kakihana ◽  
Masatomo Yashima
Keyword(s):  
Solid Solution ◽  
Crystallite Size ◽  
Surface Area ◽  
Solid Solutions ◽  
Lattice Parameter ◽  
Cubic Phase ◽  
Complex Method ◽  
Amorphous Precursor ◽  
Fine Powders ◽  
Polymerized Complex Method

A series of solid solutions (1 − x) ZrO2 · xY0.857 W0.143 O1.714 (1/7Y6WO12) of metastable cubic phase were synthesized at 800 °C through a polymerized complex method. Lattice parameter a0 of solid solutions varies linearly with Y0.857 W0.143 O1.714 content (x). Crystallization began to occur above 400 °C from amorphous precursor to yield at 800 °C fine powders of 6–10 nm and 19–40 m2/g for crystallite size and surface area, respectively.

scholarly journals Спектральные характеристики и перенос энергии Ce-=SUP=-3+-=/SUP=-->Tb-=SUP=-3+-=/SUP=-->Eu-=SUP=-3+-=/SUP=- в соединении LuBO-=SUB=-3-=/SUB=-(Ce, Tb, Eu)

2022 ◽  
Vol 64 (1) ◽  
pp. 105
Author(s):  
С.З. Шмурак ◽  
В.В. Кедров ◽  
А.П. Киселев ◽  
Т.Н. Фурсова ◽  
И.И. Зверькова
Keyword(s):  
Charge Transfer ◽  
Solid Solutions ◽  
Luminous Intensity ◽  
Excitation Spectra ◽  
Minimum Threshold ◽  
Threshold Distance

The structure, IR, luminescence, and luminescence excitation spectra of Ce3+, Tb3+, and Eu3+ ions in Lu1−2xCexEuхBO3 and Lu0.91−2xCexTb0.09EuхBO3 solid solutions were studied. The minimum "threshold" distance between Ce3+ and Eu3+ ions was estimated, at which there is no charge transfer between these ions, leading to the quenching of Ce3+ and Eu3+ luminescence. It is shown that in Lu0.91−2xCexTb0.09EuхBO3 compounds, the range of Ce and Eu concentrations of 0.2 – 0.25 at. % is optimal for obtaining the maximum luminous intensity of this compound.

High-temperature X-ray powder diffraction study of the tetragonal-cubic phase transition in nanocrystalline, compositionally homogeneous ZrO2–CeO2 solid solutions

2008 ◽  
Vol 23 (S1) ◽  
pp. S70-S74 ◽  
Author(s):  
L. M. Acuña ◽  
R. O. Fuentes ◽  
D. G. Lamas ◽  
I. O. Fábregas ◽  
N. E. Walsöe de Reca ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
High Temperature ◽  
Powder Diffraction ◽  
Solid Solutions ◽  
Tetragonal Phase ◽  
Room Temperature ◽  
Cubic Phase ◽  
X Ray ◽  
First Order

Crystal structure of compositionally homogeneous, nanocrystalline ZrO2–CeO2 solutions was investigated by X-ray powder diffraction as a function of temperature for compositions between 50 and 65 mol % CeO2. ZrO2-50 and 60 mol % CeO2 solid solutions, which exhibit the t′-form of the tetragonal phase at room temperature, transform into the cubic phase in two steps: t′-to-t″ followed by t″-to-cubic. But the ZrO2-65 mol % CeO2, which exhibits the t″-form, transforms directly to the cubic phase. The results suggest that t′-to-t″ transition is of first order, but t″-to-cubic seems to be of second order.

Study of alloying behaviour in metastable Mg-Ti solid solutions using Auger parameter measurements and charge-transfer calculations

2002 ◽  
Vol 82 (4) ◽  
pp. 841-855 ◽  
Author(s):  
T. Mitchell ◽  
S. Diplas ◽  
P. Tsakiropoulos ◽  
J. F. Watts ◽  
J. A. D. Matthew
Keyword(s):  
Charge Transfer ◽  
Solid Solutions ◽  
Auger Parameter
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