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10.1038/srep13698 http://scihub22266oqcxt.onion/10.1038/srep13698 C4555180!4555180!26323962     free     free     free Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Sci+Rep 2015 ; 5 (ä): ä Nephropedia Template TP {{tp|p=26323962|t=2015. Understanding Phase-Change Memory Alloys from a Chemical Perspective |pdf=|usr=}}{{26323962}} gab.com Text Understanding Phase-Change Memory Alloys from a Chemical Perspective JO: Sci Rep http://www.kidney.de/pget.php?&tw=1&pmid=26323962 #FOAvip Phase-change memories (PCM) are associated with reversible ultra-fast low-energy crystal-to-amorphous switching in GeTe-based alloys co-existing with the high stability of the two phases at ambient temperature, a unique property that has been recently explained by the high fragility of the glass-forming liquid phase, where the activation barrier for crystallisation drastically increases as the temperature decreases from the glass-transition to room temperature. At the same time the atomistic dynamics of the phase-change process and the associated changes in the nature of bonding have remained unknown. In this work we demonstrate that key to this behavior is the formation of transient three-center bonds in the excited state that is enabled due to the presence of lone-pair electrons. Our findings additionally reveal previously ignored fundamental similarities between the mechanisms of reversible photoinduced structural changes in chalcogenide glasses and phase-change alloys and offer new insights into the development of efficient PCM materials. Twit Text FOAVip Understanding Phase-Change Memory Alloys from a Chemical Perspective ????Sci Rep http://www.kidney.de/pget.php?&tw=1&pmid=26323962 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26323962 #FOAvip English Wikipedia <ref>{{Cite pmid|26323962}}</ref> Understanding Phase-Change Memory Alloys from a Chemical Perspective #MMPMID26323962 Kolobov A; Fons P; Tominaga J Sci Rep 2015[]; 5 (ä): ä PMID26323962show ga Phase-change memories (PCM) are associated with reversible ultra-fast low-energy crystal-to-amorphous switching in GeTe-based alloys co-existing with the high stability of the two phases at ambient temperature, a unique property that has been recently explained by the high fragility of the glass-forming liquid phase, where the activation barrier for crystallisation drastically increases as the temperature decreases from the glass-transition to room temperature. At the same time the atomistic dynamics of the phase-change process and the associated changes in the nature of bonding have remained unknown. In this work we demonstrate that key to this behavior is the formation of transient three-center bonds in the excited state that is enabled due to the presence of lone-pair electrons. Our findings additionally reveal previously ignored fundamental similarities between the mechanisms of reversible photoinduced structural changes in chalcogenide glasses and phase-change alloys and offer new insights into the development of efficient PCM materials. äUnderstanding Phase-Change Memory Alloys from a Chemical Perspective (epmc).pdf DeepDyve Pubget Overpricing