Structural and Physical Properties of <svg style="vertical-align:-4.49648pt;width:167.45px;" id="M1" height="20.625" version="1.1" viewBox="0 0 167.45 20.625" width="167.45" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,14.975)"><path id="x46" d="M493 503l-29 -4q-13 56 -28 80q-13 22 -35.5 29.5t-78.5 7.5h-76q-22 0 -27.5 -5t-5.5 -27v-238h103q66 0 82.5 12t25.5 62h29v-193h-29q-9 54 -25.5 67t-82.5 13h-103v-181q0 -64 15 -78.5t84 -19.5v-28h-272v28q61 5 74.5 19.5t13.5 78.5v399q0 64 -13 78t-72 19v28
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q-47 14 -180 22z" /></g></svg> Glasses

<table>Variation of activation
energy <i>W</i> with average ion separation <i>R</i>. </table>

Advances in Condensed Matter Physics

fig6

Figure 6

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q-47 14 -180 22z" /></g></svg> Glasses 

Advances in Condensed Matter Physics

Structural and Physical Properties of Glasses

Figure 6