Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"layered compounds"”.
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Towards topological superconductivity in hydrogen-intercalated layered compounds
L'abstract è presente nell'allegato / the abstract is in the attachment
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An X Ray Study of the Structure of Potassium(1-X)-Rubidium(x)-Carbon(y)
The mixed layered compounds K$\sb{\rm 1-x}$Rb$\sb{\rm x}$C$\sb8$ and K$\sb{\rm 1-x}$Rb$\sb{\rm x}$C$\sb{24}$ represent quasi two-dimensional alloys interleaved by graphite hexagonal planes. We report extensive x-ray scattering investigations of the structural aspects of these compounds.
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Advancing the computational exploration for thermoelectric materials
… materials, such as SnSe, Bi2Te3, and Mg3Sb2, are layered materials in which the intrinsic transport would be inherently anisotropic in single crystals, warranting an investigation into anisotropic transport for single-crystal thermoelectric applications. Before thorough investigations into …
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Superstructures of Magnetic Materials
… carbide SmNiC2 and the perovskite-related layered compounds La5(Ti0.80Fe0.20)5O17 and La6(Ti0.67Fe0.33)6O20. Studies were performed with single-crystal X-ray diffraction and subsequently refinement and analysis of the crystal structures. Measurements of SmNiC2 were performed within the …
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An x-ray study of the structure of K1-xRbxCy
The mixed layered compounds K1-xRbxC8 and K1-xRbxC24 represent quasi two-dimensional alloys interleaved by graphite hexagonal planes. We report extensive x-ray scattering investigations of the structural aspects of these compounds. In stage 1 K1-xRbxC8, we find that the interlayer separation …
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High Pressure Studies of Superconductivity
… studied. Metallic hydrogen and hydrogen-rich compounds are believed to be good candidates for high temperature superconductivity. High pressure optical studies of benzene: C<strong>6</strong>H<strong>6</strong>) have been performed to 2 Mbar to search for pressure-induced metallization. …
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Printable graphene sensing systems for drug and alcohol detection
… sheets obtained through exfoliation of layered compounds. Despite this, none of these materials have opened the door to the design of more sensitive and reliable chemical sensors in the way that graphene has. Various properties of graphene such as high surface area, conductivity, …
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Electronic structure and energetics of Fe-based superconductors: Effects of chemical and magnetic disorder in (Ba-X)(Fe-Y)2As2
… copper-oxide superconductors (Cu-SCs), they are layered compounds in proximity to an antiferromagnetic (AFM) state. The Fe-SC systems are amenable to controlled chemical doping/alloying, exhibiting coexistence of AFM and SC, as well as structural transformations versus temperature and pressure …
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Nano-engineering of Atomically Thin Novel 2D Materials and Their Heterostructures
Two dimensional layered material has attracted profound interest from material science and nanotechnology community, due to its marvelous optical, electrical and magnetic properties. In addition to Transition metal dichalcogenides (TMDs), several new ferroelectric, ferromagnetic (FM), …
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Nano-engineering of Atomically Thin Novel 2D Materials and Their Heterostructures
Two dimensional layered material has attracted profound interest from material science and nanotechnology community, due to its marvelous optical, electrical and magnetic properties. In addition to Transition metal dichalcogenides (TMDs), several new ferroelectric, ferromagnetic (FM), …
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Untersuchung der topotaktischen Reaktion von Calciumdisilicid mit Ammoniumbromid
Im Rahmen der vorliegenden Arbeit ist es gelungen, ein Siliciumsubnitrid der Summenformel Si2N chemisch und strukturell zu charakterisieren. Die braune, metastabile Verbindung ist über eine topotaktische Reaktion aus der Zintl-Phase Calciumdisilicid und Ammoniumbromid im molaren Verhältnis 1:2 …
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The Ab Initio Calculation of the Chemical Shift Tensor and its Application for the Structure Determination in Ordered and Disordered Phases by Means of Solid-State Nuclear Magnetic Resonance
… phases to covalently bonded two-dimensional layered compounds. For the structural modeling in these environments the advantages of force field and semiempirical methods, density functional and perturbation theory calculations were combined with the description of the systems in the cluster or …
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On new allotropes and nanostructures of carbon nitrides
… analysis confirms the formation of ABA’ layered, graphitic systems, and the extent of condensation is confirmed as next-to-perfect by elemental analysis and vibrational spectroscopy.