Composition Dependence of Structural Parameters and Properties of Gallium Ferrite

Details Composition Dependence of Structural Parameters and Properties of Gallium Ferrite Composition Dependence of Structural Parameters and Properties of Gallium Ferrite

2011-07-19

arxiv.org/abs/1107.3623v1

Physics

Condensed Matter

Materials Science

15 pages with 4 figures

Scientific paper

We show the effect of composition on structural and magnetic characteristics of pure phase polycrystalline Ga<2-x>FeO<3> (GFO) for compositions between 0.8 <= x <= 1.3. X-ray analysis reveals that lattice parameters of GFO exhibit a linear dependence on Fe content in single phase region indicating manifestation of Vegard's law. Increasing Fe content of the samples also leads to stretching of bonds as indicated by the Raman peak shifts. Further, low temperature magnetic measurements show that the coercivity of the samples is maximum for Ga:Fe ratio of 1:1 driven by a competition between decreasing crystallite size and increasing magnetic anisotropy.

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