The structure of silver/germanium/selenium glass

The origin of the first sharp diffraction peak in the structure factor of covalent glasses and liquids

“…In general, the intensity of the FSDP decreases markedly upon the addition of modifier atoms: this behaviour has been observed in alkali silicate glasses [IS] upon the addition of sodium (but not lithium, which has the opposite effect-see section 8). in Ag-GeSe [19] and Ag2S-GeS, glasses [20], and also AgZGBZ03 glasses [U] (but it is to be noted that the addition of appreciable amounts of the doping salt AgI to this binary borate glass causes the appearance of an intense FSDP at a significantly smaller value of Q than that characteristic of pure glassy B z 0 3 [21]).…”

Experimental Studies on Ge–S–Ag Glasses

“…This indicates that the increase of Ag content in the glass leads initially to a decrease of the amount of IRO present so that when it reaches some critical amount (!20 at%) it destroys the IRO present in this system of glasses. A similar effect of Ag on the IRO in the chemically similar family of chalcogenide glasses Ge±Se±Ag was observed from neutron diffraction [41] and neutron, inelastic and Raman scattering [42].…”

Topological Study of Phase-Separated Ag-Conducting Chalcogenide Glasses Using Peak Force Quantitative Nano-Mechanical Characterization

“…In order to explain the operation of this memory and in particular its very short switching time hardly compatible with the mobility of Ag + ions, various hypotheses have been proposed and among them, the presence of pre-existing silver-rich zones within the amorphous film-which would be heterogeneousand the creation of conduction paths between these zones. To confirm this hypothesis and to better understand the phenomena at the origin of the switching from a resistive state to a conductive state in CB-RAM memories, the electrical, structural, and thermal properties of bulk Ag-Ge-Se glasses have been widely studied (Dejus et al, 1988(Dejus et al, , 1991(Dejus et al, , 1992Kawasaki et al, 1999;Mitkova et al, 1999;Iyetomi et al, 2000;Piarristeguy et al, 2000Piarristeguy et al, , 2003Piarristeguy et al, , 2007aPiarristeguy et al, , 2012Ureña et al, 2003Ureña et al, , 2005Wang et al, 2003;Cervinka et al, 2005;Tafen et al, 2005;Cuello et al, 2007;Prasai and Drabold, 2011;Le Parc et al, 2013;Stellhorn et al, 2016a,b;Zeidler et al, 2016Zeidler et al, , 2018. It was shown that the conductivity of Ag x (Ge 0.25 Se 0.75 ) 100−x glasses with 1 < x < 30 at.…”