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
h440q1 -40 10 -147z" /></g><g transform="matrix(.022,-0,0,-.022,11.921,14.975)"><path id="x65" d="M380 106l15 -22q-42 -52 -87 -74t-76 -22q-89 0 -142 62t-53 151q0 103 66 175q67 73 146 73h1q61 0 105.5 -46.5t44.5 -105.5q0 -16 -4.5 -22.5t-18.5 -9.5q-54 -10 -262 -17q1 -95 46 -143.5t104 -48.5q61 0 115 50zM225 412q-35 0 -64.5 -32.5t-40.5 -90.5q83 0 170 3
q14 0 19 4.5t5 15.5q1 41 -23.5 70.5t-65.5 29.5z" /></g><g transform="matrix(.016,-0,0,-.016,21.45,20.35)"><path id="x1D7D0" d="M453 211h25l-46 -211h-415v23q97 102 151 166q42 49 81 110q51 78 51 148q0 56 -31.5 91.5t-87.5 35.5q-77 0 -122 -90h-28q67 204 223 204q82 0 132 -49.5t50 -133.5q0 -110 -114 -218l-162 -154h140q82 0 107 13q27 13 46 65z" /></g><g transform="matrix(.022,-0,0,-.022,29.912,14.975)"><path id="x4F" d="M381 665q131 0 226.5 -93t95.5 -239q0 -158 -96 -253t-238 -95q-137 0 -231 95t-94 238q0 142 92.5 244.5t244.5 102.5zM359 629q-89 0 -151 -74.5t-62 -208.5q0 -141 69 -233t175 -92q90 0 150.5 74t60.5 211q0 152 -69 237.5t-173 85.5z" /></g><g transform="matrix(.016,-0,0,-.016,46.662,20.35)"><path id="x1D7D1" d="M58 524l-21 12q80 152 229 152q73 0 119 -41q45 -41 45 -96q0 -40 -21.5 -74.5t-62.5 -52.5q57 -20 89.5 -68.5t32.5 -109.5q0 -110 -86 -185t-214 -75q-69 0 -110.5 24.5t-41.5 65.5q0 26 18.5 43t46.5 17q45 0 96 -57q39 -43 79 -43q45 0 71.5 34t26.5 88q0 75 -49 121
q-25 23 -56 39q-34 17 -97 38v17q69 21 100 53t31 78q0 103 -99 103q-40 0 -69.5 -19t-56.5 -64z" /></g><g transform="matrix(.022,-0,0,-.022,55.125,14.975)"><path id="x2D" d="M300 253l-14 -55h-229l14 55h229z" /></g><g transform="matrix(.022,-0,0,-.022,63.105,14.975)"><path id="x42" d="M372 352v-2q176 -27 176 -159q0 -99 -95 -151q-73 -40 -196 -40h-221v28q65 5 78.5 19t13.5 76v404q0 63 -12 77t-72 18v28h257q102 0 150 -34q26 -18 41 -48.5t15 -65.5q0 -111 -135 -150zM213 362h47q80 0 117.5 32t37.5 96q0 56 -33 92t-100 36q-41 0 -56 -10
q-13 -8 -13 -50v-196zM213 328v-203q0 -54 17 -72.5t66 -18.5q67 1 110.5 37t43.5 110q0 147 -192 147h-45z" /></g><g transform="matrix(.016,-0,0,-.016,76.288,20.35)"><use xlink:href="#x1D7D0" /></g><g transform="matrix(.022,-0,0,-.022,84.762,14.975)"><use xlink:href="#x4F" /></g><g transform="matrix(.016,-0,0,-.016,101.5,20.35)"><use xlink:href="#x1D7D1" /></g><g transform="matrix(.022,-0,0,-.022,109.975,14.975)"><use xlink:href="#x2D" /></g><g transform="matrix(.022,-0,0,-.022,117.955,14.975)"><path id="x56" d="M687 650v-28q-52 -6 -71.5 -23t-47.5 -83q-142 -346 -208 -527h-31q-119 325 -207 545q-21 54 -39.5 68.5t-65.5 19.5v28h245v-28q-52 -5 -61.5 -15.5t3.5 -43.5q55 -157 166 -437h2q120 303 158 421q14 43 3.5 55.5t-71.5 19.5v28h225z" /></g><g transform="matrix(.016,-0,0,-.016,133.712,20.35)"><use xlink:href="#x1D7D0" /></g><g transform="matrix(.022,-0,0,-.022,142.175,14.975)"><use xlink:href="#x4F" /></g><g transform="matrix(.016,-0,0,-.016,158.925,20.35)"><path id="x1D7D3" d="M148 676h322l-45 -127h-276l-22 -81q103 -6 151 -20q82 -23 127.5 -79.5t45.5 -134.5q0 -109 -79 -176q-78 -66 -203 -66q-64 0 -105.5 25.5t-41.5 62.5q0 26 17.5 43.5t43.5 17.5q47 0 100 -46q49 -42 90 -42q42 0 71 29.5t29 74.5q0 51 -36.5 90.5t-105.5 61.5
q-47 14 -180 22z" /></g></svg> Glasses

<table>Variation of small
polaron radius with iron content.</table>

Advances in Condensed Matter Physics

fig7

Figure 7

Figure 7: 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
h440q1 -40 10 -147z" /></g><g transform="matrix(.022,-0,0,-.022,11.921,14.975)"><path id="x65" d="M380 106l15 -22q-42 -52 -87 -74t-76 -22q-89 0 -142 62t-53 151q0 103 66 175q67 73 146 73h1q61 0 105.5 -46.5t44.5 -105.5q0 -16 -4.5 -22.5t-18.5 -9.5q-54 -10 -262 -17q1 -95 46 -143.5t104 -48.5q61 0 115 50zM225 412q-35 0 -64.5 -32.5t-40.5 -90.5q83 0 170 3
q14 0 19 4.5t5 15.5q1 41 -23.5 70.5t-65.5 29.5z" /></g><g transform="matrix(.016,-0,0,-.016,21.45,20.35)"><path id="x1D7D0" d="M453 211h25l-46 -211h-415v23q97 102 151 166q42 49 81 110q51 78 51 148q0 56 -31.5 91.5t-87.5 35.5q-77 0 -122 -90h-28q67 204 223 204q82 0 132 -49.5t50 -133.5q0 -110 -114 -218l-162 -154h140q82 0 107 13q27 13 46 65z" /></g><g transform="matrix(.022,-0,0,-.022,29.912,14.975)"><path id="x4F" d="M381 665q131 0 226.5 -93t95.5 -239q0 -158 -96 -253t-238 -95q-137 0 -231 95t-94 238q0 142 92.5 244.5t244.5 102.5zM359 629q-89 0 -151 -74.5t-62 -208.5q0 -141 69 -233t175 -92q90 0 150.5 74t60.5 211q0 152 -69 237.5t-173 85.5z" /></g><g transform="matrix(.016,-0,0,-.016,46.662,20.35)"><path id="x1D7D1" d="M58 524l-21 12q80 152 229 152q73 0 119 -41q45 -41 45 -96q0 -40 -21.5 -74.5t-62.5 -52.5q57 -20 89.5 -68.5t32.5 -109.5q0 -110 -86 -185t-214 -75q-69 0 -110.5 24.5t-41.5 65.5q0 26 18.5 43t46.5 17q45 0 96 -57q39 -43 79 -43q45 0 71.5 34t26.5 88q0 75 -49 121
q-25 23 -56 39q-34 17 -97 38v17q69 21 100 53t31 78q0 103 -99 103q-40 0 -69.5 -19t-56.5 -64z" /></g><g transform="matrix(.022,-0,0,-.022,55.125,14.975)"><path id="x2D" d="M300 253l-14 -55h-229l14 55h229z" /></g><g transform="matrix(.022,-0,0,-.022,63.105,14.975)"><path id="x42" d="M372 352v-2q176 -27 176 -159q0 -99 -95 -151q-73 -40 -196 -40h-221v28q65 5 78.5 19t13.5 76v404q0 63 -12 77t-72 18v28h257q102 0 150 -34q26 -18 41 -48.5t15 -65.5q0 -111 -135 -150zM213 362h47q80 0 117.5 32t37.5 96q0 56 -33 92t-100 36q-41 0 -56 -10
q-13 -8 -13 -50v-196zM213 328v-203q0 -54 17 -72.5t66 -18.5q67 1 110.5 37t43.5 110q0 147 -192 147h-45z" /></g><g transform="matrix(.016,-0,0,-.016,76.288,20.35)"><use xlink:href="#x1D7D0" /></g><g transform="matrix(.022,-0,0,-.022,84.762,14.975)"><use xlink:href="#x4F" /></g><g transform="matrix(.016,-0,0,-.016,101.5,20.35)"><use xlink:href="#x1D7D1" /></g><g transform="matrix(.022,-0,0,-.022,109.975,14.975)"><use xlink:href="#x2D" /></g><g transform="matrix(.022,-0,0,-.022,117.955,14.975)"><path id="x56" d="M687 650v-28q-52 -6 -71.5 -23t-47.5 -83q-142 -346 -208 -527h-31q-119 325 -207 545q-21 54 -39.5 68.5t-65.5 19.5v28h245v-28q-52 -5 -61.5 -15.5t3.5 -43.5q55 -157 166 -437h2q120 303 158 421q14 43 3.5 55.5t-71.5 19.5v28h225z" /></g><g transform="matrix(.016,-0,0,-.016,133.712,20.35)"><use xlink:href="#x1D7D0" /></g><g transform="matrix(.022,-0,0,-.022,142.175,14.975)"><use xlink:href="#x4F" /></g><g transform="matrix(.016,-0,0,-.016,158.925,20.35)"><path id="x1D7D3" d="M148 676h322l-45 -127h-276l-22 -81q103 -6 151 -20q82 -23 127.5 -79.5t45.5 -134.5q0 -109 -79 -176q-78 -66 -203 -66q-64 0 -105.5 25.5t-41.5 62.5q0 26 17.5 43.5t43.5 17.5q47 0 100 -46q49 -42 90 -42q42 0 71 29.5t29 74.5q0 51 -36.5 90.5t-105.5 61.5
q-47 14 -180 22z" /></g></svg> Glasses 

Advances in Condensed Matter Physics

Structural and Physical Properties of Glasses

Figure 7