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Here, we report the exfoliation of bulk MoS2 (molybdenum disulfide) into few-layer nanosheets and then prepared nanocomposite films with poly(ethylene oxide) (MoS2-PEO). We observed nonpolar or polarity independent bistable resistive switching memory in two-terminal devices with indium tin oxide (ITO) and aluminum (Al) as bottom and top electrodes, respectively. In both bipolar and unipolar operation, it is observed that the biasing direction controls the current conduction mechanism. When positive bias is applied at the top Al electrode, the low resistance state (LRS) conduction is ohmic type. But in opposite biasing condition, LRS conduction is space charge controlled. The current-voltage characteristics of the bipolar and unipolar switching are distinctly different in terms of their RESET process. In bipolar, the RESET process is very sharp whereas in unipolar operation it is staggered and step-wise.

Here, we report the exfoliation of bulk MoS 2 (molybdenum disulfide) into few layer nanosheets and then prepared nano-composite films with poly (ethylene oxide) (MoS 2 -PEO). We observed non-polar or polarity independent bistable resistive switching memory in two-terminal devices with Indium tin oxide (ITO) and aluminum (Al) as bottom and top electrode. In both bipolar and unipolar operations, it is observed that the biasing direction controls the current conduction mechanism. When positive bias is applied at the top Al electrode, the low resistance state (LRS) conduction is Ohmic type. But in opposite biasing condition, LRS conduction is space charge controlled. The current-voltage characteristics of the bipolar and unipolar switching are distinctly different in terms of their RESET process. In bipolar, the RESET process is very sharp whereas in unipolar operation it is staggered and step-wise.

An interionic lattice potential is developed on the basis of phonon-pressure theory. This interionic potential is used to investigate the thermodynamic and thermoelastic properties of NaCN, KCN, and RbCN crystals. Thermal contribution is taken into account within the framework of HZ type short range overlap interactions, effective upto second neighbour ions. Cohesive energy and six distinct values of third order elastic constants (TOEC) for these crystals are calculated a t both temperatures 0 and 300 K. Values of pressure and temperature derivatives of SOEC are also calculated corresponding to both temperatures. The results are discussed and compared with the available experimental data.Es wird ein interionares Gitterpotential auf der Grundlage der Phononendrucktheorie entwickelt. Dieses interionare Potential wird benutzt, um die thermodynamischen und thermoplastischen Eigenschaften von NaCN-, KCN-und RbCN-Kristallen zu untersuchen. Thermische Beitriige werden im Rahmen der kurzreichweitigen HZ-uberlappungswechselwirkung, die bis zu den zweiten Nachbarionen effektiv ist, berucksichtigt. Die KohLsionsenergie und sechs verschiedene Werte der elastischen Konstanten dritter Ordnung (TOEC) fur diese Kristalle werden f5r die beiden Temperaturen 0 und 300 K berechnet. Werte der Druck-und Temperaturableitungen des SOEC werden ebenfalls entsprechend den beiden Temperaturen berechnet. Die Egebnisse werden diskutiert und mit zur Verfiigung stehenden experimentellen Werten verglichen.