Please use this identifier to cite or link to this item: http://arks.princeton.edu/ark:/88435/dsp01f7623g226
 Title: Exploration of Novel Intermetallic Superconductors Authors: Srivichitranond, Laura Advisors: Cava, Robert J. Department: Chemistry Class Year: 2017 Abstract: I report the discovery of the new superconductor TaIr$$_{2}$$Ge$$_{2}$$, which has a critical temperature around 3.5 K. This material crystallizes in an entirely new orthorhombic structure type consisting of endohedral Ta@Ir$$_{7}$$Ge$$_{4}$$ clusters, one that is more complex than those of the more commonly observed 1:2:2 intermetallic phases. The superconducting transition of this compound is characterized by temperature-dependent resistivity, magnetic susceptibility, and specific heat measurements, and is of the weak coupling BCS type with $$\Delta \text{C/}\gamma \text{T}_c$$ =1.55. In addition, I explore known structure types with the goal of generating new superconducting compounds, either by elemental substitution or by the addition of a small element to an already existing structure. This search led to the synthesis of three previously unreported phases: LuPd$$_3$$Si$$_x$$, TmB$$_3$$B$$_{1-x}$$Si$$_x$$, and Zr$$_4$$Mn$$_4$$Si$$_7$$. Further work on these systems may lead to the identification of other new superconducting materials. URI: http://arks.princeton.edu/ark:/88435/dsp01f7623g226 Type of Material: Princeton University Senior Theses Language: en_US Appears in Collections: Chemistry, 1926-2017