Materials synthesis and investigation of itinerant ferromagnetism in the UCo₁-xFex Ge system
Year: 2009
Type: dissertation
Abstract: The conditions required for the growths of bulk single crystals of UCoGe and Nd₁.₈₅Ce₀₁₅CuO₄ are reported. Polycrystal samples of the doping series UCo₁-xFexGe were grown and characterized, in particular observing the evolution of ferromagnetism in the series. Low substitutions of Fe increase the ferromagnetic ordering temperature up to 10 K at around 7.5% Fe concentration. Additional substitutions of Fe depresses the ordering temperature until 20% Fe concentration where no magnetic ordering is observed down to 2 K. Ferromagnetic ordering is observed in the high Fe region particularly after annealing at 900⁰C for 240 hours. However, X-ray analysis shows that some impurities formed in this particular region, thus the source of ferromagnetism in this region requires further study
Author: Kevin Huang
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G222768804, Strongly Correlated Electron Phenomena in Rare Earth and Actinide Intermetallics, SUPERCONDUCTIVITY AND MAGNETISM IN D AND F ELECTRON MATERIALS, SUPERCONDUCTIVITY AND MAGNETISM IN D- AND F-ELECTRON MATERIALS, ACQUISITION OF EQUIPMENT TO ESTABLISH A SINGLE CRYSTAL GROWTH AND CHARACTERIZATION FACILITY
OpenAlex ID: W288324372