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Title: Investigation of Magnetic, Magnetocaloric, and Critical Properties of La{sub 0.5}Ba{sub 0.5}MnO{sub 3} Manganite

Abstract

We present an extensive study of the magnetic properties of a novel La{sub 0.5}Ba{sub 0.5}MnO{sub 3} perovskite material prepared by the hydrothermal method. The explored sample was structurally studied by the x-ray diffraction (XRD) method which confirms the formation of a pure cubic phase of a perovskite structure with Pm3m space group. The magnetic properties were probed by employing temperature M (T) and external magnetic field M (μ{sub o}H) dependence of magnetization measurements. A magnetic phase transition from ferromagnetic to paramagnetic phase occurs at 339 K in this sample. The maximum magnetic entropy change (|ΔS{sub M}{sup max}|) took a value of 1.4 J kg{sup − 1} K{sup − 1} at the applied magnetic field of 4.0 T for the explored sample and has also been found to occur at Curie temperature (T{sub C}). This large entropy change might be instigated from the abrupt reduction of magnetization at T{sub C}. The magnetocaloric effect (MCE) is maximum at T{sub C} as represented by M (μ{sub o}H) isotherms. The relative cooling power (RCP) is 243.2 J kg{sup − 1} at μ{sub o}H = 4.0 T. Moreover, the critical properties near T{sub C} have been probed from magnetic data. The critical exponents δ, β, and γ with valuesmore » 3.82, 0.42, and 1.2 are close to the values predicted by the 3D Ising model. Additionally, the authenticity of the critical exponents has been confirmed by the scaling equation of state and all data fall on two separate branches, one for T < T{sub C} and the other for T > T{sub C}, signifying that the critical exponents obtained in this work are accurate.« less

Authors:
 [1];  [2];  [1];  [3];  [2];  [4]
  1. University of Azad Jammu & Kashmir, Department of Physics (Pakistan)
  2. PINSTECH, CDL, Physics Division (Pakistan)
  3. PINSTECH, Electronics Division (Pakistan)
  4. University of Azad Jammu & Kashmir, Department of Chemistry (Pakistan)
Publication Date:
OSTI Identifier:
22782467
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 11; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORON COMPOUNDS; CUBIC LATTICES; CURIE POINT; ENTROPY; EQUATIONS OF STATE; HYDROTHERMAL SYNTHESIS; ISING MODEL; LANTHANUM COMPOUNDS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; MAGNETIZATION; MANGANATES; PARAMAGNETISM; PEROVSKITE; PHASE TRANSFORMATIONS; SPACE GROUPS; X-RAY DIFFRACTION

Citation Formats

Iqbal, Mazhar, Khan, Muhammad Nasir, Khan, Ayaz Arif, Zaka, Imran, Mehmood, Amjad, and Ahmad, Ikhtiar. Investigation of Magnetic, Magnetocaloric, and Critical Properties of La{sub 0.5}Ba{sub 0.5}MnO{sub 3} Manganite. United States: N. p., 2018. Web. doi:10.1007/S10948-018-4603-1.
Iqbal, Mazhar, Khan, Muhammad Nasir, Khan, Ayaz Arif, Zaka, Imran, Mehmood, Amjad, & Ahmad, Ikhtiar. Investigation of Magnetic, Magnetocaloric, and Critical Properties of La{sub 0.5}Ba{sub 0.5}MnO{sub 3} Manganite. United States. doi:10.1007/S10948-018-4603-1.
Iqbal, Mazhar, Khan, Muhammad Nasir, Khan, Ayaz Arif, Zaka, Imran, Mehmood, Amjad, and Ahmad, Ikhtiar. Thu . "Investigation of Magnetic, Magnetocaloric, and Critical Properties of La{sub 0.5}Ba{sub 0.5}MnO{sub 3} Manganite". United States. doi:10.1007/S10948-018-4603-1.
@article{osti_22782467,
title = {Investigation of Magnetic, Magnetocaloric, and Critical Properties of La{sub 0.5}Ba{sub 0.5}MnO{sub 3} Manganite},
author = {Iqbal, Mazhar and Khan, Muhammad Nasir and Khan, Ayaz Arif and Zaka, Imran and Mehmood, Amjad and Ahmad, Ikhtiar},
abstractNote = {We present an extensive study of the magnetic properties of a novel La{sub 0.5}Ba{sub 0.5}MnO{sub 3} perovskite material prepared by the hydrothermal method. The explored sample was structurally studied by the x-ray diffraction (XRD) method which confirms the formation of a pure cubic phase of a perovskite structure with Pm3m space group. The magnetic properties were probed by employing temperature M (T) and external magnetic field M (μ{sub o}H) dependence of magnetization measurements. A magnetic phase transition from ferromagnetic to paramagnetic phase occurs at 339 K in this sample. The maximum magnetic entropy change (|ΔS{sub M}{sup max}|) took a value of 1.4 J kg{sup − 1} K{sup − 1} at the applied magnetic field of 4.0 T for the explored sample and has also been found to occur at Curie temperature (T{sub C}). This large entropy change might be instigated from the abrupt reduction of magnetization at T{sub C}. The magnetocaloric effect (MCE) is maximum at T{sub C} as represented by M (μ{sub o}H) isotherms. The relative cooling power (RCP) is 243.2 J kg{sup − 1} at μ{sub o}H = 4.0 T. Moreover, the critical properties near T{sub C} have been probed from magnetic data. The critical exponents δ, β, and γ with values 3.82, 0.42, and 1.2 are close to the values predicted by the 3D Ising model. Additionally, the authenticity of the critical exponents has been confirmed by the scaling equation of state and all data fall on two separate branches, one for T < T{sub C} and the other for T > T{sub C}, signifying that the critical exponents obtained in this work are accurate.},
doi = {10.1007/S10948-018-4603-1},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 11,
volume = 31,
place = {United States},
year = {2018},
month = {11}
}