Investigation of the structural, electrical, and dielectric properties of La_0.5Sm_0.2Sr_0.3Mn_1−xCr_xO₃ for electrical application

Abstract

In the present research, polycrystalline samples of La0.5Sm0.2Sr0.3Mn1−xCrxO3 are prepared using the self-combustion method.

Study of the effect of the substitution of Fe by Ti on the microstructure and the physical properties of the perovskite system La0.67Ca0.2Ba0.13Fe1−xTixO3 with x = 0 and 0.03 at low temperatures

“…These peaks indicate the change in moving charge dynamics from long range to short range. 50 We can also notice that with the increase in temperature, these peaks shi towards high frequencies, which underlines that the relaxation process is thermally activated (activation of the dipoles). Also, the increase in temperature is accompanied by a decrease in the maximum of these peaks.…”

Determination of the crystalline size of hexagonal La1−xSrxMnO3 (x = 0.3) nanoparticles from X-ray diffraction – a comparative study

“…By using these values and those from eqn (11a)-(11f), the elastic coefficients of S1 and S2 were calculated, as shown in Table 1. Furthermore, the Young's modulus (Y hkl ) corresponding to the Miller indices of S1 and S2 were calculated using eqn (10), as presented in Table 2. The average Y hkl values for S1 and S2 were 268.358 and 268.364 GPa, respectively.…”

“…7 Researchers showed that partial substitution of the ions at site A or B by other metal ions and reduction in their particle size to a critical value (usually nanometers) could make the T C values reach close to room temperature, which is beneficial for MR technology. 8–11…”

“…7 Researchers showed that partial substitution of the ions at site A or B by other metal ions and reduction in their particle size to a critical value (usually nanometers) could make the T C values reach close to room temperature, which is benecial for MR technology. [8][9][10][11] Considering the crystal structure of the La 1−x Sr x MnO 3 system, most reports indicated that the rhombohedral structure could be observed in the range of 0.2 # x # 0.5. 12,13 However, Bindu 3 found that the hexagonal structure exists in the samples x = 0.2, 0.3, and 0.4, similar to the observation in the La 0.7 -Sr 0.3 MnO 3 nanopowders fabricated by high-energy ball milling and then calcined at 700 °C, 800 °C, and 900 °C.…”