Exploring Magnetic Behaviour in La0.70Pr0.30Mn0.8Co0.2O3 Perovskite

• Published in: Journal of superconductivity and novel magnetism 2022-05, Vol.35 (5), p.1183-1193
• Main Authors: Choudhary, B. L., Palsaniya, K. K., Choudhary, S. R., Kumari, Jyoti, Kumari, Namita, Quraishi, A. M., Alvi, P. A., Dolia, S. N., Kumar, Sudhish
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Magnetic Materials; Magnetism; Original Paper; Physics; Physics and Astronomy; Strongly Correlated Systems; Superconductivity
• ISSN: 1557-1939; 1557-1947
• DOI: 10.1007/s10948-022-06173-0

This work aims to understand the magnetic behaviour in the La 0.70 Pr 0.30 Mn 0.8 Co 0.2 O 3 perovskite sample. The sample was prepared by a solid-state reaction. The Rietveld refinement gives orthorhombic crystal structure with lattice constants, i.e. a  = 5.4928(5) Å, b  = 7.7683(7) Å, and c  = 5.5148(5) Å. The magnetization shows the ferromagnetic to paramagnetic transition. The blocking temperature ( T B  = 151 K) and paramagnetic Curie temperature ( θ p  = 189 K) have been found by the magnetization versus temperature (M-T) curves. The blocking temperature indicates the interaction between internal magnetic energy and thermal energy. This interaction can also be clearly seen in the coinciding temperature ( T con ). The scaling law also supports the paramagnetic Curie temperature. The derivative of M-T curves shows a magnetic phase transition at 163 K temperature. The M-H loops show the ferromagnetic nature at a lower temperature and paramagnetic at room temperature which supports our M-T results. The T g (spin-glass transition) decreases with increasing field. The Kneller’s fitting gives the T B  = 176 K. The loop squareness value is decreasing with increasing temperatures. The peak width (2H m ) suggests that magnetic domains exist in the sample at lower temperature.