On the Neel temperature and magnetic domain wall movements of Ga sub(2)- sub(x)Fe sub(x)O sub(3) single crystals grown by floating-zone technique

• Published in: Journal of alloys and compounds Vol. 590; pp. 459 - 464
• Main Authors: Srimathy, B, Bhaumik, Indranil, Ganesamoorthy, S, Bhatt, R, Karnal, A K, Kumar, J
• Format: Journal Article
• Language: English
• Published: 25-03-2014
• Subjects: Alloys; Concentration (composition); Crystals; Ferrite; Single crystals; Spectra; Walls; X-rays
• ISSN: 0925-8388
• DOI: 10.1016/j.jallcom.2013.12.159

Single crystals of piezoelectric ferrimagnet. Gallium ferrite Ga sub(2-x)Fe sub(x)O sub(3) (x - 0.8, 1.0 and 1.2) were grown by optical floating zone technique. Phase confirmation was done by X-ray diffraction and the lattice parameters were determined via Rietveld refinement which shows a linear variation. Composition of the grown crystals was confirmed by energy dispersive X-ray spectra. Temperature and frequency dependent dielectric spectra have been used to explain the conduction mechanism in Ga sub(2-x)Fe sub(x)O sub(3) single crystals. Dielectric constant of 1610 was obtained for GaFeO sub(3) (x =1) and increases with x. With increasing iron concentration, a linear increase in T sub(N)is observed and the crystals transform as softer agnets.