Electrical and magnetic properties of spherical SmFeO{sub 3} synthesized by aspartic acid assisted combustion method

Journal Article · Tue Dec 15 00:00:00 EST 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.07.013· OSTI ID:22584221

Yuvaraj, Subramanian ^[1]; Layek, Samar ^[2]; Vidyavathy, S. Manisha ^[3]; Yuvaraj, Selvaraj ^[1]; Meyrick, Danielle ^[4]

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1. Solid State Ionics and Energy Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641 046 (India)
2. Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)
3. Department of Ceramic Technology, Anna University, Chennai 600 025 (India)
4. School of Engineering and Information Technology, Murdoch University, South St. Murdoch, WA 6150 (Australia)

Highlights: • SmFeO{sub 3} is synthesized by simple combustion method using aspartic acid as the fuel. • The particles are spherical in shape with the size ranges between 150 and 300 nm. • Cole–Cole plot infers the bulk conduction mechanism. • Room temperature VSM analysis reveal the weak ferromagnetic behaviour of SmFeO{sub 3}. • Mössbauer analysis elucidates the +3 oxidation state of Fe atoms. - Abstract: Samarium orthoferrite (SmFeO{sub 3}) is synthesized by a simple combustion method using aspartic acid as fuel. Phase purity and functional groups are analyzed via X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) analysis, which confirms the single phase formation of orthorhombic SmFeO{sub 3}. Approximately spherical particles with size range 150–300 nm is revealed by scanning electron microscope (SEM). The conductivity of the material is identified by the single semicircle obtained in the solid state impedance spectra at elevated temperatures. The calculated electrical conductivity increases with increasing temperature, inferring the semiconducting nature of SmFeO{sub 3}. A magnetic study at room temperature revealed weak ferromagnetic behaviour in SmFeO{sub 3} due to Dzyaloshinsky–Moriya antisymmetric exchange interaction mechanism. Mössbauer analysis confirmed the +3 oxidation state of iron and magnetic ordering of the sample at room temperature.

• OSTI ID: 22584221
• Journal Information: Materials Research Bulletin, Vol. 72; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
ASPARTIC ACID
COMBUSTION
ELECTRIC CONDUCTIVITY
EXCHANGE INTERACTIONS
FERRATES
FOURIER TRANSFORMATION
IMPEDANCE
INFRARED SPECTRA
IRON
MAGNETIC PROPERTIES
MAGNETIZATION
MOESSBAUER EFFECT
ORTHORHOMBIC LATTICES
SAMARIUM COMPOUNDS
SCANNING ELECTRON MICROSCOPY
SPHERICAL CONFIGURATION
TEMPERATURE RANGE 0273-0400 K
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION