Investigations on structure, magnetic and magnetocaloric of La0.8Sr0.2Mn1−xNixO3(x = 0.05, 0.10, and 0.15) at room temperature
College of Materials Science and Engineering, Guilin University of Technology, 541004, Guilin, China
2 Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials, Guilin University of Technology, 541004, Guilin, China
Accepted: 2 December 2022
Published online: 16 December 2022
Based on Sr2+ doping at the A-site, this investigation examined the effects of B-site doping Ni2+ on the structural, morphological, magnetic, and magnetocaloric properties of La0.8Sr0.2Mn1−xNixO3 (x = 0.05, 0.1, 0.15) (LSMNO). LSMNO was created in this work using the sol–gel technique. The R-3c space group's rhombohedral structure of LSMNO was determined utilizing X-ray diffraction and refining. Simultaneously, the cell volume and particle size decreased with increasing Ni2+ doping. Additionally, magnetic studies revealed that LSMNO undergoes a ferromagnetic–paramagnetic transition near Tc and that the Curie temperature (Tc) of La0.8Sr0.2Mn0.95Ni0.05O3 is 297 K. The maximum magnetic entropy changes () were 3.12, 2.21 and 1.19 J/(kg K) at an external magnetic field of 3 T and a relative cooling capacity of 168.36, 152.14 and 160.85 J/kg, respectively.
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