M.S. (Master of Science)
Department of Physics
Ba₁₋ₓNaₓFe₂As₂ is among the exciting new class of iron-pnictide unconventional superconductors. Like other iron arsenides, magnetic order and superconductivity compete with each other but can coexist at the right temperature and doping level. In Ba₁₋ₓNaₓFe₂As₂, there is a reentrant tetragonal phase that overlaps with the superconducting dome. The AFM order gives way to a rare double-Q SDW magnetic structure. It is of paramount importance that we elucidate the nature of the magnetic fluctuations in this material and what gives rise to, and suppresses, nematic order. This thesis also focuses extensively on the synthesis of Ba₁₋ₓNaₓFe₂As₂ single crystals and their characterization as a function of nominal stoichiometry and superconducting properties.
DeRose, Ryan, "The synthesis of Ba₁₋ₓNaₓFe₂As₂ and Its structural and magnetic properties" (2018). Graduate Research Theses & Dissertations. 6333.
Northern Illinois University
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Advisors: Omar Chmaissem.||Committee members: Bogdan Dabrowski; Yasuo Ito.||Includes illustrations.||Includes bibliographical references.