Effect of structural phase transformation in FeGaO{sub 3} on its magnetic and ferroelectric properties

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917613· OSTI ID:22490205

Bhowmik, R. N. ^[1]

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1. Department of Physics, Pondicherry University, R.Venkataraman Nagar, Kalapet, Pondicherry – 605014 (India)

We investigate the structural phase transformation from orthorhombic to rhombohedral structure in FeGaO{sub 3} by adopting a combined effect of mechanical alloying/milling and solid state sintering techniques. The structural phase formation of the FeGaO{sub 3} compound has been characterized by X-ray diffraction pattern. Mechanical milling played a significant role on the stabilization of rhombohedral phase in FeGaO{sub 3}, where as high temperature sintering stabilized the system in orthorhombic phase. A considerable difference has been observed in magnetic and ferroelectric properties of the system in two phases. The system in rhombohedral (R-3c) phase exhibited better ferromagnetic and of ferroelectric properties at room temperature in comparison to orthorhombic (Pc2{sub 1}n) phase. The rhombohedral phase appears to be good for developing metal doped hematite system for spintronics applications and in that process mechanical milling played an important role.

• OSTI ID: 22490205
• Journal Information: AIP Conference Proceedings, Vol. 1665, Issue 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPARATIVE EVALUATIONS
DOPED MATERIALS
FERROELECTRIC MATERIALS
GALLIUM OXIDES
HEMATITE
IRON COMPOUNDS
MILLING
ORTHORHOMBIC LATTICES
PHASE TRANSFORMATIONS
SINTERING
STABILIZATION
TEMPERATURE DEPENDENCE
TRIGONAL LATTICES
X-RAY DIFFRACTION