Issue 49, 2017, Issue in Progress

Prediction of magnetoresistance using a magnetic field and correlation between the magnetic and electrical properties of La0.7Bi0.05Sr0.15Ca0.1Mn1−xInxO3 (0 ≤ x ≤ 0.3) manganite

Abstract

In this paper, we have systematically investigated the effect of In doping on the magnetic and magnetocaloric effect (MCE) in La0.7Bi0.05Sr0.15Ca0.1Mn1−xInxO3 (0 ≤ x ≤ 0.3) manganite. All of the samples exhibit a second-order magnetic phase transition from the ferromagnetic to the paramagnetic state at the Curie temperature (TC). From the measurements of isothermal magnetization around (TC), we have determined the magnetic entropy change (ΔSM). It has been found that there was a large (ΔSM), i.e. a large (MCE), in all samples. Among them, a maximum (ΔSM) and the highest relative cooling power (RCP) under the magnetic field of 5 T are found to be 6.14 J kg−1 K−1 and 281 J kg−1, respectively for x = 0. This investigation suggests that our samples would be suitable candidates for magnetic refrigeration technology. The relationship between resistivity and magnetization was performed as ρ = ρ0 exp(−M/α). The (MCE) was investigated based on the resistivity measurements. The obtained results were discussed. A typical numerical method (Gauss function) was used for fitting the experimental data of resistivity. The simulation values such as metal–semiconductor transition temperature (TM–Sc) and maximum resistivity (ρmax), calculated from this function, showed promising agreement with the experimental data. The shifts of these values as a function of magnetic field for all samples have been interpreted.

Graphical abstract: Prediction of magnetoresistance using a magnetic field and correlation between the magnetic and electrical properties of La0.7Bi0.05Sr0.15Ca0.1Mn1−xInxO3 (0 ≤ x ≤ 0.3) manganite

Supplementary files

Article information

Article type
Paper
Submitted
14 Apr 2017
Accepted
06 Jun 2017
First published
14 Jun 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 30707-30716

Prediction of magnetoresistance using a magnetic field and correlation between the magnetic and electrical properties of La0.7Bi0.05Sr0.15Ca0.1Mn1−xInxO3 (0 ≤ x ≤ 0.3) manganite

A. Belkahla, K. Cherif, J. Dhahri, K. Taibi and E. K. Hlil, RSC Adv., 2017, 7, 30707 DOI: 10.1039/C7RA04256F

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