ChemInform Abstract: Structure, Morphology, and Misfit Accommodation Mechanism of MgIn2O4 Films Grown on MgO(001) Substrates by Solid State Reaction.

ChemInform ◽  
2010 ◽  
Vol 26 (7) ◽  
pp. no-no
Author(s):  
D. HESSE ◽  
H. SIEBER ◽  
P. WERNER ◽  
R. HILLEBRAND ◽  
J. HEYDENREICH
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Structure Morphology ◽  
Abstract Structure ◽  
Misfit Accommodation ◽  
Accommodation Mechanism

Effects of Various Fluxes on Synthesis of Deep Red Emitting CaAl12O19:Mn4+ Phosphors

2016 ◽  
Vol 852 ◽  
pp. 454-460 ◽  
Author(s):  
Qiu Hong Zhang ◽  
Hai Yong Ni ◽  
Ling Li Wang ◽  
Fang Ming Xiao
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Solid State Reaction ◽  
Single Phase ◽  
Luminescent Properties ◽  
Solid State Reaction Method ◽  
Luminescent Intensity ◽  
Reaction Method ◽  
Structure Morphology ◽  
Forming Temperature

Deep red emitting CaAl12-xO19:xMn4+ phosphors were synthesized by solid state reaction method. Various fluxes (BaF2, H3BO3, Na2CO3 and NH4Cl) were added in preparation of the phosphors. The influences of the various fluxes on the crystal structure, morphology and luminescent properties of CaAl12O19:Mn4+ phosphors were studied. The results show that the obtained phosphors with fluxes possessed better luminescent intensity than that of the phosphors without fluxes. The maximum luminescent intensities were found with the following order: H3BO3 (2.0 wt%) > Na2CO3 (0.5 wt%) > NH4Cl (0.3 wt%) > BaF2 (0.1 wt%) > no flux. The H3BO3 flux can decrease the single phase forming temperature of CaAl12O19:Mn4+ phosphors by about 150°C.

BiFeO3 Nanoparticles Prepared by NaNO3-Assisted Low-Heating Temperature Solid State Reaction Method

2013 ◽  
Vol 745-746 ◽  
pp. 113-118
Author(s):  
Lei Wang ◽  
Xue Ying Chen ◽  
Jin Bao Xu ◽  
Liang Bian ◽  
Bo Gao
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Heating Temperature ◽  
Particle Morphology ◽  
Solid State Reaction Method ◽  
Weak Ferromagnetism ◽  
Molar Ratio ◽  
Uniform Size ◽  
Reaction Method ◽  
Structure Morphology

BiFeO3nanoparticles were synthesized by a NaNO3-assisted low-heating temperature solid state reaction method. The effects of the molar ratio of added NaNO3and the calcination temperature on the characteristics of the products were discussed. The structure, morphology, magnetic, optical and electrical properties of BiFeO3were characterized by XRD, SEM, VSM and UV-VIS. The experimental results showed that the introduction of leachable inert inorganic salt as a hard agglomeration inhibitor in the mixture precursor led to the formation of BiFeO3nanoparticles with uniform size. With the addition of NaNO3in the process, the particle morphology decreased from a diameter of 300-500 nm to 80-100 nm. The BiFeO3attained at 600 °C showed a smaller band gap (2.12 eV) and weak ferromagnetism at room temperature with a remnant magnetization value (Mr) of approximately 3.1×10-5emu/g and a coercive filed value (Hc) of nearly 20 Oe.

Structure, morphology and electrochemical properties of LiNi0.5Mn0.5−xCoxO2 prepared by solid state reaction

2005 ◽  
Vol 148 ◽  
pp. 85-89 ◽  
Author(s):  
Decheng Li ◽  
Yuki Sasaki ◽  
Masaya Kageyama ◽  
Koichi Kobayakawa ◽  
Yuichi Sato
Keyword(s):  
Solid State ◽  
Electrochemical Properties ◽  
Solid State Reaction ◽  
Structure Morphology

Fabrication of Dense Composite Ceramic Electrolyte SDC-(Li/Na)2CO3

2010 ◽  
Vol 447-448 ◽  
pp. 666-670 ◽  
Author(s):  
Raharjo Jarot ◽  
Andanastuti Muchtar ◽  
Wan Ramli Wan Daud ◽  
Norhamidi Muhamad ◽  
Edy Herianto Majlan
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Composite Ceramic ◽  
Carbonate Content ◽  
Composite Electrolytes ◽  
Ceramic Electrolyte ◽  
Structure Morphology ◽  
Cold Pressed ◽  
Carbonate Salts

Composite electrolytes made of samarium-doped cerium (SDC, Ce0.8Sm0.2O1.9) and (67 mol% Li/ 33mol% Na)2CO3 carbonate salts were investigated in relation to their structure, morphology and porosity of the electrolyte. The fabrication of the SDC–(Li/Na)2CO3 composite electrolytes were achieved in two steps: step (1) preparation of the samarium-doped cerium powders by sol-gel; step (2) mixing of the samarium-doped cerium with carbonates in various compositions by solid state reaction. The electrolyte pellets were compacted at different pressures (25 and 50 MPa) and sintered at 600oC, 700oC and 800oC. The XRD results demonstrated that the introduction of carbonates did not change the SDC phase structure. FESEM images showed that the carbonate component was amorphous and well distributed in the SDC. The lowest porosity (2.92%) was achieved for samples with carbonate content of 30% (SDC7030) sintered at 800oC and cold pressed at 50MPa.

The wustite-spinel interface

1987 ◽  
Vol 45 ◽  
pp. 268-269
Author(s):  
S.R. Summerfelt ◽  
C.B. Carter
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Strain Energy ◽  
Matrix Material ◽  
Lattice Misfit ◽  
Solid State Reactions ◽  
Oxygen Sublattice ◽  
Large Particles ◽  
Small Lattice ◽  
Coherent Interfaces

The wustite-spinel interface can be viewed as a model interface because the wustite and spinel can share a common f.c.c. oxygen sublattice such that only the cations distribution changes on crossing the interface. In this study, the interface has been formed by a solid state reaction involving either external or internal oxidation. In systems with very small lattice misfit, very large particles (>lμm) with coherent interfaces have been observed. Previously, the wustite-spinel interface had been observed to facet on {111} planes for MgFe2C4 and along {100} planes for MgAl2C4 and MgCr2O4, the spinel then grows preferentially in the <001> direction. Reasons for these experimental observations have been discussed by Henriksen and Kingery by considering the strain energy. The point-defect chemistry of such solid state reactions has been examined by Schmalzried. Although MgO has been the principal matrix material examined, others such as NiO have also been studied.

Observation of solid-state reaction between a thin yttria film and a (0001) α-alumina substrate

1994 ◽  
Vol 52 ◽  
pp. 644-645
Author(s):  
J. R. Heffelfinger ◽  
C. B. Carter
Keyword(s):  
Electron Microscopy ◽  
Solid State ◽  
Solid State Reaction ◽  
Yttrium Aluminum Garnet ◽  
Secondary Phase ◽  
Ceramic Composites ◽  
Alumina Substrate ◽  
Transmission Electron ◽  
Alumina Fibers ◽  
Optical Applications

Transmission-electron microscopy (TEM), scanning-electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS) were used to investigate the solid-state reaction between a thin yttria film and a (0001) α-alumina substrate. Systems containing Y2O3 (yttria) and Al2O3 (alumina) are seen in many technologically relevant applications. For example, yttria is being explored as a coating material for alumina fibers for metal-ceramic composites. The coating serves as a diffusion barrier and protects the alumina fiber from reacting with the metal matrix. With sufficient time and temperature, yttria in contact with alumina will react to form one or a combination of phases shown by the phase diagram in Figure l. Of the reaction phases, yttrium aluminum garnet (YAG) is used as a material for lasers and other optical applications. In a different application, YAG is formed as a secondary phase in the sintering of AIN. Yttria is added to AIN as a sintering aid and acts as an oxygen getter by reacting with the alumina in AIN to form YAG.

PREDICTION OF GLASS FORMATION BY SOLID STATE REACTION IN ALLOYS

1990 ◽  
Vol 51 (C4) ◽  
pp. C4-111-C4-117 ◽  
Author(s):  
L. J. GALLEGO ◽  
J. A. SOMOZA ◽  
H. M. FERNANDEZ ◽  
J. A. ALONSO
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Glass Formation
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