char = C;code = 67
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = d;code = 100
char = a;code = 97
char = -;code = 45
char = l;code = 108
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = .;code = 46
result sql = Cation diffusion and ionic conductivity in soda-lime silicate glasses.
Cation diffusion and ionic conductivity in soda-lime silicate glasses.
char = W;code = 87
char = e;code = 101
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = u;code = 117
char = d;code = 100
char = i;code = 105
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = c;code = 99
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = d;code = 100
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = x;code = 120
char = N;code = 78
char = a;code = 97
char = 2;code = 50
char = O;code = 79
char = ;code = 32
char = (;code = 40
char = 3;code = 51
char = ;code = 32
char = -;code = 45
char = ;code = 32
char = x;code = 120
char = );code = 41
char = C;code = 67
char = a;code = 97
char = O;code = 79
char = ;code = 32
char = x;code = 120
char = ;code = 32
char = 4;code = 52
char = S;code = 83
char = i;code = 105
char = O;code = 79
char = 2;code = 50
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = x;code = 120
char = ;code = 32
char = =;code = 61
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 0;code = 48
char = ,;code = 44
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 1;code = 49
char = ,;code = 44
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 3;code = 51
char = ,;code = 44
char = ;code = 32
char = 1;code = 49
char = .;code = 46
char = 0;code = 48
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = 3;code = 51
char = .;code = 46
char = 0;code = 48
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = o;code = 111
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = d;code = 100
char = y;code = 121
char = n;code = 110
char = a;code = 97
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = a;code = 97
char = l;code = 108
char = y;code = 121
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = g;code = 103
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = t;code = 116
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = d;code = 100
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = N;code = 78
char = a;code = 97
char = +;code = 43
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = u;code = 117
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = C;code = 67
char = a;code = 97
char = 2;code = 50
char = +;code = 43
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = e;code = 101
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = g;code = 103
char = o;code = 111
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = n;code = 110
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = c;code = 99
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = r;code = 114
char = g;code = 103
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = C;code = 67
char = a;code = 97
char = 2;code = 50
char = +;code = 43
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = f;code = 102
char = f;code = 102
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = r;code = 114
char = g;code = 103
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = v;code = 118
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = e;code = 101
char = v;code = 118
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = g;code = 103
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = C;code = 67
char = a;code = 97
char = 2;code = 50
char = +;code = 43
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = b;code = 98
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = u;code = 117
char = r;code = 114
char = i;code = 105
char = t;code = 116
char = y;code = 121
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = r;code = 114
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = r;code = 114
char = r;code = 114
char = i;code = 105
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = l;code = 108
char = i;code = 105
char = k;code = 107
char = e;code = 101
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = N;code = 78
char = a;code = 97
char = +;code = 43
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = W;code = 87
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = k;code = 107
char = e;code = 101
char = t;code = 116
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = m;code = 109
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = -;code = 45
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = b;code = 98
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = N;code = 78
char = a;code = 97
char = +;code = 43
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = C;code = 67
char = a;code = 97
char = 2;code = 50
char = +;code = 43
char = ;code = 32
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = d;code = 100
char = a;code = 97
char = -;code = 45
char = l;code = 108
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = s;code = 115
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result sql = We have studied the mobilities of calcium and sodium ions in silicate glasses of compositions xNa2O (3 - x)CaO x 4SiO2 with x = 0.0, 0.1, 0.3, 1.0 and 3.0 by means of radiotracer diffusion, electrical conductivity measurements, and dynamic mechanical thermal analyses. In glasses containing sodium oxide, the Na+ ions are much more mobile than the Ca2+ ions, and are, therefore, governing the electrical conductivity. In the pure calcium silicate glass, the activation energy of Ca2+ diffusion is higher than the activation energy of the electrical conductivity. This provides strong evidence that the electrical conductivity of this glass is not determined by the migration of Ca2+ ions, but by impurity charge carriers, which are most likely Na+ ions. We sketch the composition-dependent mobilities of Na+ and Ca2+ ions in soda-lime silicate glasses with variable Na2O and CaO content. Our results indicate that the coordination environment of Ca2+ ions remains unchanged when CaO is replaced by Na2O which is consistent with recent results of molecular dynamic simulations. Moreover, our results confirm the formation of dissimilar Na-Ca pairs which lead to a non-random mixing of the cations in the glass. The formation of such pairs was recently deduced from nuclear magnetic resonance spectra of soda-lime silicate glasses.

Publication: Phys Chem Chem Phys 2005 Jun 7 ;7(11)::2279-86.
Publication Date: 2005 Jun 7
Study Author(s): Natrup, F V;Bracht, H;Murugavel, S;Roling, B;
Institution: Institut für Materialphysik and Sonderforschungsbereich 458 (DFG), Westfälische Wilhelms-Universität Münster, Wilhelm-Klemmstr. 10, 48149 Münster, Germany. [email protected]
Shortcut link to this study:
We have studied the mobilities of calcium and sodium ions in silicate glasses of compositions xNa2O (3 - x)CaO x 4SiO2 with x = 0.0, 0.1, 0.3, 1.0 and 3.0 by means of radiotracer diffusion, electrical conductivity measurements, and dynamic mechanical thermal analyses. In glasses containing sodium oxide, the Na+ ions are much more mobile than the Ca2+ ions, and are, therefore, governing the electrical conductivity. In the pure calcium silicate glass, the activation energy of Ca2+ diffusion is higher than the activation energy of the electrical conductivity. This provides strong evidence that the electrical conductivity of this glass is not determined by the migration of Ca2+ ions, but by impurity charge carriers, which are most likely Na+ ions. We sketch the composition-dependent mobilities of Na+ and Ca2+ ions in soda-lime silicate glasses with variable Na2O and CaO content. Our results indicate that the coordination environment of Ca2+ ions remains unchanged when CaO is replaced by Na2O which is consistent with recent results of molecular dynamic simulations. Moreover, our results confirm the formation of dissimilar Na-Ca pairs which lead to a non-random mixing of the cations in the glass. The formation of such pairs was recently deduced from nuclear magnetic resonance spectra of soda-lime silicate glasses.
PMID: 19785112

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