Impact of Titanium Doping on Structural, Magnetic, and Magnetocaloric Properties and Order of Transition in La{sub 0.5}Pr{sub 0.3}Ba{sub 0.2}Mn{sub 1-x}Ti{sub x}O{sub 3} (x = 0.0 and 0.1) Manganite

Journal Article · Fri Nov 15 00:00:00 EST 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-019-5142-0· OSTI ID:22919474

Hamdi, Rafik ^[1]; Khelifi, J. ^[2]; Walha, I.; Dhahri, E. ^[1]; Hlil, E. K. ^[3]

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1. University of Sfax, Laboratory of Applied Physics, Faculty of Sciences of Sfax (Tunisia)
2. University of Kairouan, Research Unit of Valuation and Optimization of Resource, Faculty of Science and Technology of Sidi Bouzid, University Campus Agricultural City (Tunisia)
3. CNRS–Université J. Fourier, Institut Néel (France)

In this paper, we study the structural, magnetic, and magnetocaloric properties of the polycrystalline peroviskite manganites La{sub 0.5}Pr{sub 0.3}Ba{sub 0.2}Mn{sub 1-x}Ti{sub x}O{sub 3} with x = 0 and 0.1. Our samples were prepared by solid-state reaction method. The XRD study has been analyzed by Rietveld refinement technique. Both samples crystallize in the rhombohedral symmetry with R 3-bar c space group. The second order of magnetic phase transition in all samples is confirmed by the Arrott analysis and the behavior of the master curve. Moreover, the magnetic entropy change ∆S{sub M} has been determined by the Maxwell relation, using phenomenological model and Landau theory. The relative cooling power (RCP) value under a magnetic field of 5 T is 236.29 J kg{sup −1} for La{sub 0.5}Pr{sub 0.3}Ba{sub 0.2}Mn{sub 0.9}Ti{sub 0.1}O{sub 3} sample which will be an interesting compound for application materials. Also, an agreement was found between the magnetic entropy change values calculated by Landau theory and those obtained using Maxwell relation above T{sub C} and a difference below it, for a magnetic field of 2 T.

• OSTI ID: 22919474
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 11; Other Information: Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM COMPOUNDS
CRYSTAL STRUCTURE
DOPED MATERIALS
ENTROPY
LANTHANUM COMPOUNDS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MANGANATES
PHASE TRANSFORMATIONS
POLYCRYSTALS
PRASEODYMIUM COMPOUNDS
SPACE GROUPS
TITANIUM ADDITIONS
TRIGONAL LATTICES
X-RAY DIFFRACTION