Synthesis of A1–xA'xNbO3 (A=Na+, K+; A'= La3+, Sr2+) and its Electrical Properties

1996 ◽  
Vol 453 ◽  
Author(s):  
W. Sugimoto ◽  
T. Tahara ◽  
Y. Sugahara ◽  
K. Kuroda
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Low Temperature ◽  
Single Phase ◽  
Solid State Reactions ◽  
Cubic Symmetry ◽  
Resistivity Measurements ◽  
Semiconducting Properties ◽  
Metallic Conduction ◽  
The Relationship

AbstractPolycrystalline samples of A1–xA'xNbO3 (A=Na+, K+; A'= La3+, Sr2+) were prepared by solid-state reactions and the relationship between the structure and electrical properties was examined. Single-phase products were obtained for Na1–xLaxNbO3 (x ≤0.1), K1–xLaxNbO3 (x ≤0.15), Na1–xSrxNbO3 (x ≤0.3), and K1–xSrxNbO3 (x ≤0.5). The structures of the sodium-containing compounds and potassium-containing compounds were indexed according to a pseudocubic and cubic symmetry, respectively. The resistivity measurements showed semiconductive behavior for the lanthanum-containing samples. The strontium-containing samples showed semiconducting properties for x ≤0.2, while a transition to metallic conduction at low temperature was observed for x >0.2.

scholarly journals Synthesis and characterisation of the vibrational and electrical properties of antiferromagnetic 6L-Ba2CoTeO6 ceramics

2019 ◽  
Vol 48 (29) ◽  
pp. 11112-11121 ◽  
Author(s):  
Anees A. Aziz ◽  
Silvana Mercone ◽  
Ricardo P. S. M. Lobo ◽  
Anderson Dias ◽  
Roberto L. Moreira ◽  
...  
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Low Temperature ◽  
Solid State Reaction ◽  
Single Phase ◽  
Solid State Reaction Method ◽  
Phonon Modes ◽  
Reaction Method ◽  
Antiferromagnetic Transitions

Dense single-phase 6L-Ba2CoTeO6 ceramics fabricated by the solid-state reaction method were employed to investigate the behaviour of the phonon modes and the mechanism driving the low-temperature antiferromagnetic transitions.

scholarly journals NTCR Behavior of La-DopedBaBiO3Ceramics

2009 ◽  
Vol 2009 ◽  
pp. 1-4 ◽  
Author(s):  
Ying Luo ◽  
Xvqiong Li ◽  
Xinyu Liu
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Single Phase ◽  
Solid State Reaction Method ◽  
Absolute Temperature ◽  
Monoclinic Structure ◽  
Reaction Method ◽  
Maximum Value ◽  
Ntc Thermistors ◽  
The Relationship

The influence of the composition on the microstructure and electrical properties ofBaBi1-xLaxO3  (0≤x≤0.1)NTC thermistors was investigated. A single phase ofBaBi1−xLaxO3with a monoclinic structure was prepared by solid state reaction method. The relationship between the resistivity and the reciprocal of absolute temperature of the prepared NTC thermistors was linear, indicative of NTC characteristics. The resistivity and the coefficient of temperature sensitivity first decreased with increasingxin the range ofx<0.03and then increased with further increase inx. However the alpha parameter value increased to a maximum value and then decreased again.

A single-phase all-solid-state lithium battery based on Li1.5Cr0.5Ti1.5(PO4)3 for high rate capability and low temperature operation

2018 ◽  
Vol 54 (25) ◽  
pp. 3178-3181 ◽  
Author(s):  
Atsushi Inoishi ◽  
Akira Nishio ◽  
Yuto Yoshioka ◽  
Ayuko Kitajou ◽  
Shigeto Okada
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Lithium Battery ◽  
Single Phase ◽  
Rate Capability ◽  
High Rate ◽  
High Rate Capability ◽  
Single Material

We report a battery made from a single material using Li1.5Cr0.5Ti1.5(PO4)3 as the anode, cathode and electrolyte.

scholarly journals Energy transfer in single phase Eu3+-doped Y2WO6 phosphors

RSC Advances ◽  
2017 ◽  
Vol 7 (25) ◽  
pp. 14974-14980 ◽  
Author(s):  
J. Llanos ◽  
D. Espinoza ◽  
R. Castillo
Keyword(s):  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
Single Phase ◽  
Solid State Reactions

Inorganic phosphors based on monoclinic Y2WO6 doped with Eu3+ ions were prepared via conventional solid-state reactions at high temperature.

Control of Morphology of YBO3:Eu by a Mild Hydrothermal Process

2005 ◽  
Vol 475-479 ◽  
pp. 1829-1832
Author(s):  
Ling He ◽  
Yu Hua Wang
Keyword(s):  
Solid State ◽  
Nmr Spectra ◽  
Single Phase ◽  
Hydrothermal Process ◽  
Spherical Shape ◽  
Solid State Reactions ◽  
Main Peak ◽  
Photoluminescence Intensity ◽  
Uniform Size ◽  
Excitation Peak

The phosphors YBO3:Eu with different morphology was successfully realized by mild hydrothermal process with different reaction condition. Highly spherical shape, uniform size and non-agglomeration of YBO3:Eu phosphors particle was obtained at 260°C,which is about 850°C lower than that by solid state reactions. The result of XRD showed that all samples were single phase with vaterite type structure. From IR and NMR spectra, it could be concluded that YBO3 contains mainly BO4 tetrahedra which is in favor for absorption VUV excitation. Monitoring by 598nm emission, the main excitation peak at about 247nm was observed in the excitation spectrum of spherical Y0.95Eu0.05BO3. Correspondingly, under 247nm excitation, the main peak at about 598nm was observed. The photoluminescence intensity (5D0→7F1 transition of Eu3+) of spherical shape of Y0.95Eu0.05BO3 was 1.5 times in comparison with which prepared by solid-state reactions. The best photoluminescence intensity was obtained when the concentration of Eu3+ is at 20 at. %. It indicated that hydrothermal method have a potential in the preparing various particles phosphors for application in displays and lamps.

Electrical Characterisation of Epitaxial (100) CoSi2/Si Contacts Obtained Using a Ti/Co Bilayer

1993 ◽  
Vol 320 ◽  
Author(s):  
A. Lauwers ◽  
A. Vercaemst ◽  
M. Van Hove ◽  
K. Kyllesbech Larsen ◽  
R. Verbeeck ◽  
...  
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Low Temperature ◽  
Solid State Reaction ◽  
Schottky Diodes ◽  
Current Voltage ◽  
Capacitance Voltage ◽  
Bimetallic Layer ◽  
Temperature Resistivity

ABSTRACTIn this paper the electrical properties of epitaxial CoSi2 on Si obtained by solid-state reaction of a Ti/Co bimetallic layer are investigated. Low temperature resistivity, magnetoresistance and Hall data are presented. The CoSi2ISi Schottky diodes are characterised by current - voltage and capacitance - voltage measurements at temperatures varying between - 100°C and 60°C.

scholarly journals Synthesis, structure and electrical properties of Li+-doped pyrochlore Gd2Zr2O7

2020 ◽  
Vol 7 (2) ◽  
pp. 51-60
Author(s):  
Irina A. Anokhina ◽  
Irina E. Animitsa ◽  
Anastasia F. Buzina ◽  
Vladimir I. Voronin ◽  
Vladimir B. Vykhodets ◽  
...  
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Low Temperature ◽  
Lattice Parameter ◽  
Lithium Content ◽  
Low Temperature Sintering ◽  
Hole Conductivity ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion ◽  
Wide Range

The pyrochlore Gd1.55Li0.45Zr2O6.55 was prepared by the solution and solid-state methods. The introduction of lithium in the Gd-sublattice led to decrease in the lattice parameter a = 10.4830(8) Å in comparison with Gd2Zr2O7 (a =10.5346(2) Å). Monitoring of the lithium content in the sample during heat treatments showed a loss of lithium at temperatures above 1100 °C, so, to maintain the stoichiometry of lithium the low temperature sintering methods are required. The sample Gd1.55Li0.45Zr2O6.55 exhibited a predominant oxygen-ion transport over a wide range of temperatures.  Although doping did not lead to an increase in the oxygen-ion conductivity compared to Gd2Zr2O7, it caused the suppression of the hole conductivity.

Combustion syntheses for BaTi4O9 and PbxBa1–x Ti4O9

1996 ◽  
Vol 11 (1) ◽  
pp. 162-168 ◽  
Author(s):  
Zhimin Zhong ◽  
Patrick K. Gallagher
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Aqueous Solutions ◽  
Combustion Synthesis ◽  
Spray Drying ◽  
Single Phase ◽  
Metastable Phases ◽  
Solid State Synthesis ◽  
Synthesis Process ◽  
Spray Dried

BaTi4O9 and PbxBa1−x Ti4O9, where x is 0.1, 0.2, 0.3, 0.4, or 0.5, have been prepared by a combustion synthesis process. The process starts with spray drying aqueous solutions of Pb(NO3)2, Ba(NO3)2, TiO(NO3)2, and β-alanine with appropriate ratios. Combustion reactions occur when heating the spray-dried products to 300 °C, which convert them to BaTi4O9 and PbxBa1−xTi4O9 directly. PbxBa1−xTi4O9 (x ≧ 0.1) are low temperature, metastable phases and have not been reported before. Pb0.5Ba0.5Ti4O9 is unstable above 800 °C and cannot be sintered. All PbxBa1−xTi4O9 compositions will decompose by 1300 °C, the temperature for solid state synthesis of BaTi4O9. Single-phase PbxBa1−xTi4O9 (x = 0.1, 0.2, 0.3, 0.4), however, have been sintered at relatively lower temperatures.

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