Chemical synthesis and modification of magnetic nanostructured materials for magnetic storage
Abstract
The chemical synthesis of various magnetic nanostructured materials, the study and optimization of their properties in accordance with the requirements of their technological applications, mainly in the field of ultra-high density magnetic storage media, are the objectives of the present thesis. The oleylamine method, a thermolytic and mild reducing wet chemical synthesis method is proposed, which can be applied for the synthesis of a wide range of materials. The dominant advantage of this method refers to the triple role played by the oleylamine during the synthesis reaction: it acts as high boiling point organic solvent, mild reductive agent and surface capping agent (surfactant). The synthesis conditions and factors participating as time, precursor, surfactant determine the properties of the product like crystal structure, morphology (size, shape, particle interactions), magnetic properties. Therefore the designed product can be synthesized. All the materials studied are nanostructu ...
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