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  • Cation Substitution Effects in Complex Transition Metal Oxides

    Creator:
    Duell, Brett A.
    Abstract:
    Understanding structural evolution in solids as composition changes is essential to materials properties prediction. Such structure-properties relationships are the theme of solid state chemistry. Materials scientists and chemists have utilized an abundance of simple crystal structures to enhance understanding of chemical and structural origins of properties in materials for decades....
    Resource Type:
    Dissertation
    Full Text:
    face-shared octahedral sites, respectively. UV-Vis and Near-IR spectroscopy showed intense d-d

  • Structure-property relationships of layered oxypnictides

    Creator:
    Muir, Sean W.
    Abstract:
    Investigating the structure-property relationships of solid state materials can help improve many of the materials we use each day in life. It can also lead to the discovery of materials with interesting and unforeseen properties. In this work the structure property relationships of newly discovered layered oxypnictide phases are presented...
    Resource Type:
    Dissertation
    Full Text:
    ), partial density of states for d orbitals only (c), and magnified view near the Fermi level (d). Band

  • Structure-property relationships in oxides containing select platinum group metals

    Creator:
    Gatimu, Alvin J.
    Abstract:
    Oxide materials exhibit a wide variety of structures and properties. In particular, transition metal oxides tend to be highly stable while exhibiting a wide range of properties that can be used for numerous applications. This work focuses on investigating how the structures’ of 4d and 5d transition metal oxides influences...
    Resource Type:
    Dissertation
    Full Text:
    interlayer region. c). A view along the c-axis of the structure with the interlayer Rh present and d

  • Substitution Effects on the Structure and Electronic Behavior of Ternary Precious Metal Oxides

    Creator:
    Flynn, Joshua
    Abstract:
    Due to the high cost of precursor materials, complex oxides of 4d and 5d transition metals are under-studied compared to their 3d counterparts. Recent studies have shown that oxides containing heavier transition metals can exhibit exotic electronic states due to presence of strong spin-orbit coupling. The goal of this dissertation...
    Resource Type:
    Dissertation
    Full Text:
    = 0–1.0) and (c,d) BaLaIn1-yCayIrO6 (y = 0–0.75) ........................................90

  • Heterojunction Assisted Impact Ionization at the ZnS/Si Interface and Cu_10Te_4S_13 Photodiodes

    Creator:
    Reidy, Christopher F.
    Abstract:
    Several topics are presented in this dissertation, each of which has applications to solar cells and photodetectors. First, we discuss the growth of Cu10Te4S13, copper tellurium tetrahedrite. This material has interesting optical properties; it has a large joint density of states at the conduction band maximum and valence band minimum,...
    Resource Type:
    Dissertation
    Full Text:
    ∫ 𝛿[𝐸𝑏(�⃑� )−𝐸𝑎(�⃑� ) − ℏ𝜔]𝑑 3𝑘 (6) 8 𝜌𝑏𝑎(ℏ𝜔) is the

  • Amorphous TiO₂ : A Thin Film Synthesis Route to Stabilization of Metastable TiO₂ Brookite

    Creator:
    Haggerty, James E. S.
    Abstract:
    Structure-specific synthesis processes are of key importance to the growth of polymorphic functional compounds such as TiO₂, where material properties strongly depend on structure as well as chemistry. The robust growth of the brookite polymorph of TiO₂, a promising photocatalyst, has been difficult in both powder and thin-film forms due...
    Resource Type:
    Dissertation and Video
    Full Text:
    Raman maps at 319 cm-1 (d) and 144 cm-1 (e) show that the color variations in the optical image