Thumbnail
Access Restriction
Open

Author Yuvaraj, Subramanian ♦ Layek, Samar ♦ Vidyavathy, S. Manisha ♦ Yuvaraj, Selvaraj ♦ Meyrick, Danielle ♦ Selvan, R. Kalai
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ 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
Abstract 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.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-12-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 72


Open content in new tab

   Open content in new tab