In this section
@article{Karikar:2023:10.1016/j.jmmm.2023.171334,
author = {Karikar, A and Ahmed, A and Das, K and Das, I},
doi = {10.1016/j.jmmm.2023.171334},
journal = {Journal of Magnetism and Magnetic Materials},
title = {Magnetic and magnetocaloric properties of polycrystalline Pr1−xCaxMnO3 (x ∼ 0.85, 0.90, 0.95) compounds: Emergence of large inverse and conventional magnetocaloric effects},
url = {http://dx.doi.org/10.1016/j.jmmm.2023.171334},
volume = {587},
year = {2023}
}
TY - JOUR
AB - Magnetic and magnetocaloric effect have been investigated for the electron doped polycrystalline Pr<inf>1−x</inf>Ca<inf>x</inf>MnO<inf>3</inf> (x ∼ 0.85, 0.90, 0.95) compounds. The experimental outcomes indicate that the nature of the ground state is very much sensitive with the doping concentration. Pr<inf>0.15</inf>Ca<inf>0.85</inf>MnO<inf>3</inf> compound exhibits antiferromagnetic ground state. In contrast to that ferromagnetic nature was found for the Pr<inf>0.10</inf>Ca<inf>0.90</inf>MnO<inf>3</inf> and Pr<inf>0.05</inf>Ca<inf>0.95</inf>MnO<inf>3</inf> compounds. Although, for x∼0.90 ferromagnetic phase was stable. However for x∼ 0.95, the ferromagnetic state is quite unstable. Additionally for the doping concentration x∼ 0.95, the anomalous nature was found in temperature dependent coercivity. Magnetocaloric effect study indicate that antiferromagnetic Pr<inf>0.15</inf>Ca<inf>0.85</inf>MnO<inf>3</inf> compound exhibits large inverse magnetocaloric effect (10.5 J/kg-K at H = 70 kOe magnetic field). On the other hand, ferromagnetic Pr<inf>0.10</inf>Ca<inf>0.90</inf>MnO<inf>3</inf> and Pr<inf>0.05</inf>Ca<inf>0.95</inf>MnO<inf>3</inf> compounds show conventional magnetocaloric effect. The magnetocaloric entropy change for x∼0.90 compound is significantly large (7.5 J/kg-K at H = 70 kOe magnetic field) and comparable with the other reported magnetic refrigerant materials. Universal master curve for magnetic entropy change have been constructed for all the materials having inverse and conventional magnetocaloric effect by proper scaling of temperature axis.
AU - Karikar,A
AU - Ahmed,A
AU - Das,K
AU - Das,I
DO - 10.1016/j.jmmm.2023.171334
PY - 2023///
SN - 0304-8853
TI - Magnetic and magnetocaloric properties of polycrystalline Pr1−xCaxMnO3 (x ∼ 0.85, 0.90, 0.95) compounds: Emergence of large inverse and conventional magnetocaloric effects
T2 - Journal of Magnetism and Magnetic Materials
UR - http://dx.doi.org/10.1016/j.jmmm.2023.171334
VL - 587
ER -