CaFe2O4 nano hollow spheres display colossal negative permittivity via polarization phase inversion in the cavity, unlike solid spheres of the same material.
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Geometry selective colossal negative dielectric permittivity in CaFe2O4 nanostructures
CaFe2O4 nano hollow spheres display colossal negative permittivity via polarization phase inversion in the cavity, unlike solid spheres of the same material.