Several solvothermal synthetic methods have been developed to produce novel low-dimensional magnetic materials and determine their structure-properties relationships. Two main classes of compounds were investigated, including iron selenides and transition metal formate-chlorides.
Chapter 2 details the development of the first solution-based synthetic route to superconducting iron (II) selenide. Samples were found to retain superconducting properties only when air and water were rigorously excluded from the synthesis.
Chapter 3 presents the synthesis, structure, and magnetic properties of two new mixed-valence compounds with infinite ∞1(FeSe 2) tetrahedral chains separated by Fe-amine complexes. The use of different Fe-amine complexes allows for tuning of the magnetic properties without changing the general structural motif.
Chapters 4 and 5 report the first members of the transition metal chloride-formate family of compounds, which contain linear zig-zag chains of octahedrally coordinated metal atoms linked by μ2-Cl and syn-syn formate bridges. These compounds order antiferromagnetically and exhibit metamagnetic transitions.
Chapter 6 describes a related set of transition metal formate-chloride compounds that are comprised of helical chains of edge-sharing M2+ -centered octahedra. These compounds undergo 3D ferrimagnetic ordering at low temperature, and are rare examples of homospin topological ferrimagnets.
|Commitee:||Kauzlarich, Susan M., Osterloh, Frank E.|
|School:||University of California, Davis|
|School Location:||United States -- California|
|Source:||DAI-B 79/08(E), Dissertation Abstracts International|
|Keywords:||Magnetism, Solvothermal synthesis, Superconductivity|
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