Development and Characterisation of Selenium based Chalcogenide Glasses for Phase Change Memory Devices

Abstract

newline ABSTRACT newlineIn the new computing world, phase-change memory (PCM) has recently evolved as a non-volatile key-enabling technology that has been used as memory storage. PCM has also been explored as non-von Neumann computing for neuromorphic computing applications. It was discovered in the 1960s, still, there are many questions related to its thermal stability, endurance, electrical and structural dynamics. To enhance thermal stability and operation speed, many materials have been explored yet, some rare-earth elements prove to be suitable materials for improving the performance of the device. The article describes the applications of the PCM and the basic processes involved in the working of the device. READ and WRITE processes, material exploration, and cell designs have been discussed, concluding that mushroom-type cell design is good for fabricating PCM devices. Various performance-related properties of the device have been discussed including scalability, reliability, and variability. Finally, an outlook and future scope have been discussed. newlineThe characteristics of non-crystalline chalcogenide solid materials have drawn significant and growing attention during the past few years. Because of the unique qualities of these materials, this interest is still present and constantly expanding quite quickly. These chalcogenide glasses (ChGs) may have their optical, electrical, and thermal characteristics managed, adjusted, and personalized in accordance with the required usage or applications [1-3]. The semiconducting chalcogenide glassy alloys shows transparency in the IR range, and optical band gap vary that depends on the component elements, preparation techniques, and experimental circumstances used. These ChGs are utilised in a variety of optoelectronic devices and have a broad range of applications [3-6]. Additionally, these materials possess high refractive index due to large index of nonlinearity and hence have strong electronic polarizability (and#945;p). Accordingly, the refractive index n of chalcogenide