Synthesis, Structural, Electronic, and Magnetic Properties of Cubic Perovskite La<subscript>1−x</subscript>Ba<subscript>x</subscript>MnO<subscript>3</subscript> (0.125 ≤ x ≤ 0.875) for Spintronic Devices.
In: Journal of Superconductivity & Novel Magnetism, Jg. 31 (2018-12-01), Heft 12, S. 4079-4089
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Zugriff:
In this study, La0.5Ba0.5MnO3 has been synthesized by hydrothermal method. Crystal structure and morphology are determined by x-ray diffraction and scanning electron microscopy. It is observed that Ba-doped LaMnO3 (LMO) has the same cubic crystal structure as the host material with space group Pm3̄m. Half of the La atoms are replaced by Ba in the composition. Further, the electronic and magnetic structures are investigated by solving the Kohn-Sham equation with the full-potential linearized augmented plane wave method (FP-LAPW), with GGA+U approximation for exchange and correlation, for Ba concentration from 12.5 to 87.5%. The system is half-metallic ferromagnetic (FM) up to 55% and then converts into anti-ferromagnetic (AFM). This happens due to the onset of super exchange on increasing Ba concentrations. It is suggested that Ba-doped LMO is the best material for the fabrication of an exchange-biased spin valve. The spacer material can be any non-magnetic cubic perovskite such as BaTiO3 while the FM and AFM layers can be made of Ba-doped LMO with different concentrations of Ba.Magnetic Phase Diagram of LBMO: A potential candidate for Spin-biased MTJ. [ABSTRACT FROM AUTHOR]
Titel: |
Synthesis, Structural, Electronic, and Magnetic Properties of Cubic Perovskite La<subscript>1−x</subscript>Ba<subscript>x</subscript>MnO<subscript>3</subscript> (0.125 ≤ x ≤ 0.875) for Spintronic Devices.
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Autor/in / Beteiligte Person: | Ahmed, Nisar ; Khan, Sikandar ; ur Rehman, Zia ; Nasim, M. H. ; Khan, Ayaz Arif ; Nabi, Azeem G. ; Ahmed, Hussain |
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Zeitschrift: | Journal of Superconductivity & Novel Magnetism, Jg. 31 (2018-12-01), Heft 12, S. 4079-4089 |
Veröffentlichung: | 2018 |
Medientyp: | academicJournal |
ISSN: | 1557-1939 (print) |
DOI: | 10.1007/s10948-018-4691-y |
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