Effect of Fe Substitution on the Physical Properties of La{sub 0.62}Er{sub 0.05}Ba{sub 0.33}Mn{sub 1−x}Fe{sub x}O{sub 3}(x = 0.00, 0.05 and 0.15)

Journal Article · Fri Feb 15 04:00:00 EST 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4707-7· OSTI ID:22919618

Mounira, Abassi ^[1]

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1. Shaqra University, Physics Departement, Faculty of Education, Afif Governorate (Saudi Arabia)

Morphology, magnetic and magnetocaloric properties of La{sub 0.62}Er{sub 0.05}Ba{sub 0.33}Mn{sub 1−x}Fe{sub x}O{sub 3}(x = 0.00, 0.05 and 0.15) were experimentally investigated. Solid-state reaction method was used in the preparation of the samples. The microstructure of the samples was determined by scanning electron microscopy (SEM). From the XRD study, it has been found that all samples are single-phased and crystallized in the rhombohedral structure with the R3-c space group. For x = 0.05 and 0.15, a steep drop of zero field-cooled (ZFC) magnetization at low temperature signifies the formation of cluster- or spin-glass state. This is caused by the competition between the ferromagnetic and antiferromagnetic interaction. A sensitive response to substituting Fe for Mn is observed in the magnetic and magnetocaloric properties. We found that Fe doping is powerful enough to reduce Curie temperature T{sub C} and it brings about cluster glass behaviours. The magnetocaloric effect is calculated from the measurement of initial isothermal magnetization versus magnetic field at various temperatures. The maximum entropy change |ΔS{sub M}{sup max}| reaches the highest values of 3.31, 3.12, and 2.57 J/kg K in magnetic field. However, the relative cooling power decreases with Fe content from x = 227.44 to 188.68 J/kg for x = 0.00 to x = 0.15 compositions, respectively.

• OSTI ID: 22919618
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 2 Vol. 32; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
BARIUM COMPOUNDS
CURIE POINT
ENTROPY
ERBIUM COMPOUNDS
GLASS
IRON ADDITIONS
LANTHANUM COMPOUNDS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANATES
MICROSTRUCTURE
SCANNING ELECTRON MICROSCOPY
SPACE GROUPS
SPIN GLASS STATE
TRIGONAL LATTICES
X-RAY DIFFRACTION