Effect of exceeding the concentration limit of solubility of silver in perovskites on the dielectric and electric properties of half doped lanthanum–calcium manganite

Investigation of the structural, optical, elastic and electrical properties of spinel LiZn2Fe3O8 nanoparticles annealed at two distinct temperatures

“…Regarding Zn500, the conductivity responds to the frequency in two different ways depending on the temperature. It reacts to frequency in conformity with Jonscher's law ( σ AC = Aω s where A is a constant and ω is the angular frequency) 52 up to 590 K; beyond that, it varies with frequency in agreement with Drude's model. Further, the frequency-independent region extends thermally to 590 K, above which it begins shrinking.…”

Effect of Sintering Temperature and Polarization on the Dielectric and Electrical Properties of La0.9Sr0.1MnO3 Manganite in Alternating Current

“…The frequency dependences of the real (ε′) and imaginary (ε″) parts of the dielectric permittivity at different temperatures for the La 0.9 Sr 0.1 MnO 3 compound that was sintered at 800, 1000 and 1200 °C are depicted in Figure 5 a–c and Figure 6 a–c. Their behavior with the temperature and frequency have been spotted in perovskite materials [ 4 , 5 , 56 , 57 , 58 , 59 ]. At low frequencies, the ε′ shows very high values for all the samples, with a good stability for the sample sintered at 1200 °C ( Figure 5 a–c).…”

“…Then, it decreases with the frequency increase, and it shows a dispersive behavior at high frequencies, where the ε′ values coincide with all of the explored temperatures. Such behavior can be related to the presence of different types of polarizations in the investigated samples, such as electronic, dipolar, ionic and interfacial polarizations [ 4 , 5 , 26 ]. At low frequencies, all four types contribute to the total polarization.…”

“…The physical properties of manganites have been extensively studied for the last several years [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. These rich properties allow us to exploit these types of materials in several applications [ 1 , 2 ].…”

Role of B-site cation on the structure, magnetic and dielectric properties of nanosized La0.7Sr0.3Fe1−xMxO3 (M = Mn; Co and x = 0, 0.5) perovskites

“…Furthermore, when polarization is primarily controlled by space charge polarization, the system's dielectric constant will increase with increasing the temperature as just the rate of accumulation of interfacial charge decreases, conclusively, the present samples display the orientational polarization is mostly regulated by the space polarization. Dielectric loss is known as the amount of power loss in dielectric material under the influence of field voltage applied [25,30,32]. In addition, the current perovskite oxide has a very high dielectric constant at room temperature of around 10 6 For all substance, the frequency dependence of the imaginary component of the dielectric constant (e r ) is shown in figures 9(a)-(c).…”