Abstract
In this investigation, the Fe-doped CuO system was prepared by freeze-drying an aqueous solution of copper and iron acetates, followed by a heat treatment. The synthesized samples, which were previously identified as monophasic and nanostructured, were then characterized by Mossbauer spectroscopy and magnetization techniques. These nanoparticles revealed a complex magnetic behavior, which can be attributed to the presence of two different magnetic regions: the particle core, characterized by antiferromagnetic fluctuations, and the particle shell, in which uncompensated spins are responsible for the superparamagnetic character and, eventually, the ferromagnetic interaction among the nanoparticles at low temperatures. The ferromagnetism observed for this system shows that antiferromagnetic oxide matrixes can be used for diluted magnetic semiconductor applications, if suitably doped.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
