Neutron Diffraction Studies on Temperature Driven Crystallographic Anisotropy in FeVO4 Multiferroic: Evidence of Strong Magnetostructural Correlations
We used temperature-dependent neutron diffraction measurements on FeVO4 to understand the temperature driven anisotropy and observed that the maximum change for a and b lattice parameters in conjunction with a large contraction in angle β as a function of temperature. The least changes are observed for the c lattice parameter and in γ angle. From these structural parameters, it can be said that, FeVO4 exhibits large structural anisotropy with lowering temperature. The large change in lattice parameters in magnetic phases i.e. below 22 K explains the strong magnetostructural coupling in FeVO4.
cond-mat.mtrl-sci↗