Mechanical and functional properties in magnetic materials

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Abstract

This research has been focused on the preparation of magnetic materials by different methods, the characterization of their structural characteristics, and the understanding of their mechanical and magnetic properties. Furthermore, a big effort has been paid to investigate the frequency-dependent functional properties of different materials, which are increasingly demanded in novel technological applications. Moreover, this work presents this characterization in a wide range of frequencies, from the kHz to the THz.

In this Thesis we have presented results from a wide variety of materials and techniques. However, all of them have provided interesting information to understand the structure and the properties that we have investigated. A complete view of the materials has been achieved, and the mechanical and functional properties have been related with the physical characteristics of each material. This work results in interesting conclusions from both, the fundamental and technological point of view.

Overall, our results give a complete knowledge of different materials as a whole, from the very beginning synthesis to the determination of their final properties. The conclusions may be of interest from a scientific and technological point of view and leads to an even more exciting future work to develop materials with novel properties.

This work has been done in a collaboration between the research groups DIOPMA from the Materials Science and Physical Chemistry Department, and Grup de Magnetisme from the Condensed Matter Physics Department. Moreover, this is also the results of many national and international collaborations.