Structural, optical, electric and dielectric characterization of a NaCu_0.2Fe_0.3Mn_0.5O₂ compound

Abstract

The compound NaCu0.2Fe0.3Mn0.5O2 was synthesized using a solid-state method and it crystallized in a hexagonal system with a R3̄m space group in an O3-type phase.

Crystal structure and optical characterization of a new hybrid compound, C6H9N2FeCl4, with large dielectric constants for field-effect transistors

“…As a result, the complex polarizability is described as: where the real and imaginary components of the complex polarizability, respectively, are α ′ and α ′′ and ε is the complex dielectric constant. It is possible to determine the imaginary part of the complex polarizability parameter α ′′ using the relation given below: 81 …”

Structural, dielectric and transport properties of NaxFe1/2Mn1/2O2 (x = 1 and 2/3)

“… 26 In P3-NaFe 1/2 Mn 1/2 O 2 , the Na + ions occupy prismatic sites which share faces and edges with the surrounding MO 6 octahedra. 27 The atomic positions of each sample are illustrated in Table 1S † and the interatomic distances of Na–O and FeMn–O are portrayed in Table 2 .…”

“…In this context, the compound Na 2/3 Fe 1/2 Mn 1/2 O 2 is a promising candidate compared to NaFe 1/2 Mn 1/2 O 2 for such applications. 27 …”

“…NaFe 1/2 Mn 1/2 O 2 and Na 2/3 Fe 1/2 Mn 1/2 O 2 ,were synthesized using a solid-state process, 23,27 using Na 2 CO 3 (Sigma Aldrich, 99%), Fe 2 O 3 (Sigma Aldrich, 99%), and Mn 2 O 3 (Sigma Aldrich, 99%) as precursors with the molar ratios of 1 : 1/2 : 1/2 and 2/3 : 1/2 : 1/2, respectively. The precursors were mixed and e thoroughly ground using a mortar and pestle, and then pressed into pellets.…”

Synthesis, optical properties and conduction mechanism study of α- and γ-NaMnO2 materials

“…We found that W M = 0.11 eV, which is equal to one quarter of activation energy (0.39 eV), proving that this model of CBH is ensured by a single polaron. 47 In the case of the single polaron correlated barrier jump model, the expression of AC conductivity is given by the following expression: [48][49][50] s ac ðoÞ ¼ where e 0 is the vacuum permittivity, e 0 is the dielectric constant of the material, N T is the number of state densities and U eff is the effective potential energy. Fig.…”