Characterization and magnetic properties of LaFeO3 nanofibers synthesized by electrospinning

Ultrafine one-dimensional LaFeO3 nanofibers were prepared by electrospinning. The X-ray diffraction pattern of the LaFeO3 fibers indicated nanofibers with orthorhombic perovskite crystalline structure. Transmission electron microscopy (TEM) images revealed that the LaFeO3 nanofibers were composed of...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 583; pp. 320 - 324
Main Authors Lee, Won-Yong, Yun, Hyung Joong, Yoon, Jong-Won
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier B.V 2014
Elsevier
Subjects
Coercive force
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electrospinning
Exact sciences and technology
Ferromagnetism
Filing
LaFeO3 nanofibers
Magnetic properties and materials
Magnetic properties of nanostructures
Magnetization
Nanofibers
Physics
Raman
X-ray photoelectron spectroscopy
X-rays
XPS
Electrospinning
LaFeO3 nanofibers
XPS
Raman
Ferromagnetism
Raman spectra
Magnetization
LaFeO
Magnetic hysteresis
Nanofiber
Perovskites
XRD
nanofibers
Transmission electron microscopy
Canted spin arrangements
Coercive force
Orthorhombic lattices
Iron Lanthanum Oxides Mixed
X-ray photoelectron spectra
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Summary:Ultrafine one-dimensional LaFeO3 nanofibers were prepared by electrospinning. The X-ray diffraction pattern of the LaFeO3 fibers indicated nanofibers with orthorhombic perovskite crystalline structure. Transmission electron microscopy (TEM) images revealed that the LaFeO3 nanofibers were composed of fine particles about 20nm. From X-ray photoelectron spectroscopy (XPS) analysis, the chemical composition of the LaFeO3 nanofibers was confirmed as stoichiometric LaFeO3. In the results of Raman spectroscopy, a band of disordered anion lattice is observed at 653cm−1. In spite of the antiferromagnetic nature of bulk LaFeO3, the one-dimensional LaFeO3 nanofibers obtained displayed ferromagnetic hysteresis loop, with a coercivity of 28,078 Öe and a remnant magnetization of 0.23emu/g were obtained at room temperature. This ferromagnetic behavior is due to increasing and uncompensated spins at the surface and the canted internal spin by the tilt of FeO6 octahedral units.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2013.08.191