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Updated: Jan 29, 2026

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
Published on: April 28, 2014
Evidence of Tetrahedrally Coordinated Nickel Cations in Nanostructured NiFe₂O₄
Martin Fabián1, Marta Harničárová2, Jan Valíček2
1Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 1932/45, Košice, Slovakia.
Abstract:
Nanostructured nickel ferrite (NiFe₂O₄) is prepared via high-energy ball milling of the bulk counterpart at ambient temperature. The structure of the as-prepared nanoferrite is characterized by Raman spectroscopy and 57Fe Mössbauer spectroscopy. Due to the ability of these spectroscopic techniques to probe the local environment of ions, valuable complementary insight into the nature of the local structural disorder of nanosized NiFe₂O₄ is provided. For the first time, evidence is given of the tetrahedrally coordinated nickel cations in the nanomaterial.
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