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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 11 of 11 for “"Ge-Sb-Te"”.
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Kombinatorische PVD-Synthese und Strukturuntersuchungen der Ge-Sb-Te-Schichten
… a mapping of the structure and structural change of metastable and stable phases of the ternary Ge-Sb-Te system was realized in a wide composition range including the quasi binary line GeTe-Sb2Te3. Therefore homogeneous films and films with a compositional gradient were deposited using a …
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Combinatorial material synthesis applied to Ge-Sb-Te based phase change materials
… digital information requires higher data- storage capacities and transfer rates. Consequently, there is a need for a continuous improvement of the media concept and design. Phase change recording technology offers attractive features for erasable data storage with high density. Digital …
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First and Second-Principles Atomistic Modelling of Ge-Sb-Te Phase-Change Memory Materials
Phase-change memory materials are semiconductors with a fast and re- versible transition between a resistive amorphous phase and a conductive crystalline phase. A sufficiently large contrast in electrical resistivity can be used to read and write bits of information, as encoded in the struc- ture …
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Modeling Compact Non-Volatile Photonic Switching Based on Optical Phase Change Material and Graphene Heater
… are the building blocks for programable integrated circuits (PICs) and the integration of phase change materials (PCMs) enables promising designs which are compact, non-volatile, and efficient. However, conventional PCMs such as Ge₂Sb₂Te₅ (GST) introduce significant optical absorption loss, …
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Uniaxial optical phase change metamaterials
Optical metamaterials are artificially engineered materials with exceptional electromagnetic properties that cannot be found in nature. Over the last 20 years, optical metamaterials have driven forward a plethora of fields from telecommunications to solar energy harvesting. They owe their unique …
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Improving the reliability of optical phase change materials-based devices
… our daily lives, including vision and camera systems, data transmission in telecommunication, sensing applications, manufacturing and medicine, and more. Compact on-chip integrated optics such as photonic integrated circuits and optical metasurfaces can provide us with the desired functionality, …
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Crystal-Amorphous Transformation Via Defect-Templating in Phase-Change Materials
Phase-change materials (PCM) such as GeTe and Ge-Sb-Te alloys are potential candidates for non-volatile memory applications, because they can reversibly and rapidly transform between a crystalline phase and an amorphous phase with medium-range order. Traditionally, crystal-amorphous transformation …
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Reconfigurable Photonics based on Broadband Low-loss Optical Phase Change Materials
Optical phase change materials (O-PCMs), a unique group of materials featuring drastic optical property contrast upon solid-state phase transition, have found widespread adoption in photonic switches and routers, reconfigurable meta-optics, reflective display, and optical neuromorphic computers. …
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Ab initio Study of Atomic Dynamics and Thermal Properties of Inorganic Clathrates, Chalcogenides and Perovskite Oxides
Inorganic semiconductors are important materials for devices used every day. One property that is crucial to device performance is thermal behaviour. This can be directly related to the efficiency of devices; for example, in thermoelectric power generators, a lower thermal conductivity gives a …
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Sn-Sb-Se based binary and ternary alloys for phase change memory applications
… much effort has been put into developing better non-volatile memories. Phase change random access memory (PCRAM) is considered to be one of the most promising candidates for the next-generation technology due to its many advantages: non-volatility, fast writing speed, low cost and high …