scholarly journals Conducting and dielectric properties of Na3Fe2(PO4)3 and Na2FePO4F

2021 ◽  
Vol 5 (3) ◽  
pp. 222-234
Author(s):  
A.A. Nogai ◽  
Zh.M. Salikhodzha ◽  
A.S. Nogai ◽  
D.E. Uskenbaev
Keyword(s):  
Dielectric Properties ◽  
Electrode Materials ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Dielectric Parameters ◽  
Phase Synthesis ◽  
Phase Transition Temperatures ◽  
Conductive Properties

In this research, the structure parameters, conducting and dielectric properties of Na3Fe2(PO4)3 and Na2FePO4F polycrystals were studied obtained by solid-phase synthesis. The phase transition temperatures, conducting and dielectric parameters of Na3Fe2(PO4)3 and Na2FePO4F polycrystals were refined. A comparative evaluation of the conductive properties of Na3Fe2(PO4)3 and Na2FePO4F polycrystals is given in this article. The prospects of using of Na3Fe2(PO4)3 and Na2FePO4F are justified as electrode materials in sodium ion batteries.

Solid-Phase Synthesis and Dielectric Properties of Materials Based on LaAlO3–CaTiO3 System

2017 ◽  
Vol 90 (11) ◽  
pp. 1738-1745 ◽  
Author(s):  
E. A. Tugova ◽  
A. V. Travitskov ◽  
M. V. Tomkovich ◽  
V. V. Sokolov ◽  
E. A. Nenasheva
Keyword(s):  
Dielectric Properties ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Phase Synthesis ◽  
Properties Of Materials

Mo2C-induced solid-phase synthesis of ultrathin MoS2 nanosheet arrays on bagasse-derived porous carbon frameworks for high-energy hybrid sodium-ion capacitors

2018 ◽  
Vol 6 (30) ◽  
pp. 14742-14751 ◽  
Author(s):  
Yuzhu Li ◽  
Huanwen Wang ◽  
Baojun Huang ◽  
Libin Wang ◽  
Rui Wang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
High Energy ◽  
Sodium Ion ◽  
Phase Synthesis ◽  
Nanosheet Arrays ◽  
Mos2 Nanosheet

Mo2C-induced solid-phase synthesis was reported to grow ultrathin MoS2 nanosheet arrays on bagasse-derived carbon frameworks for high-energy hybrid sodium-ion capacitors.

scholarly journals Термодинамические свойства и фазовые переходы микрокристаллической и наноструктурированной керамики SmFeO-=SUB=-3-=/SUB=-

2019 ◽  
Vol 61 (7) ◽  
pp. 1358
Author(s):  
С.Н. Каллаев ◽  
Н.М-Р. Алиханов ◽  
З.М. Омаров ◽  
С.А. Садыков ◽  
М.А. Сирота ◽  
...  
Keyword(s):  
Phase Transition ◽  
Heat Capacity ◽  
Dielectric Properties ◽  
Defect Structure ◽  
Room Temperature ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Relaxation Oscillator ◽  
Phase Synthesis ◽  
Temperature Area

AbstractThe heat capacity and dielectric properties of microcrystalline and nanostructured SmFeO_3 ceramics obtained by solid phase synthesis are studied. The ceramics is synthesized by the treatment of the batch at room temperature in Bridgman anvils by forceful action combined with shear deformation followed by sintering. It is established that the mechanoactivation results in noticeable broadening antiferromagnetic–ferroelectric transition and shifting the temperature of phase transition in the low-temperature area. The phase transition having typical for relaxation oscillator frequency dependent character is found at 558 K. It is shown that the defect structure can take a dominant place in the formation of the physical properties of ceramics.

scholarly journals Synthesis and study of the electrical conductive properties of Cs2Fe2TiO16 in various gas atmospheres

2021 ◽  
Vol 2103 (1) ◽  
pp. 012193
Author(s):  
D A Rogova ◽  
O Yu Sinel’shchikova ◽  
N V Besprozvannykh ◽  
N A Morozov
Keyword(s):  
Activation Energy ◽  
Electrical Conductivity ◽  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Type Structure ◽  
Total Resistance ◽  
Phase Synthesis ◽  
Conductive Properties

Abstract In this work, titanate Cs2Fe2Ti6O16 with a hollandite-type structure was synthesized by solid-phase synthesis. The electrical conductivity of the obtained ceramics was investigated in the temperature range from 25 to 800 °C in air and in the presence of an argon-hydrogen mixture (3% H2). It was found that the electrical conductivity of the compound under consideration depends on the composition of the atmosphere — the activation energy of conduction changes (0.57 eV in air and 0.91 eV in the presence of hydrogen). The volumetric and grain-boundary contributions to the total resistance of the sample in the gases under consideration are separated by impedance spectroscopy at a temperature of 800 °C.

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