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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 13: Magnetic Materials"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 13.1: example_1.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;\n",
"clear all;\n",
"u0=4*%pi*1e-7;\n",
"H=1e7;//magnetic field strength\n",
"X=(-0.9)*1e-6;//magnetic suseptiblity\n",
"M=X*H;//magnetization of material\n",
"disp('A/m',M,'magnetization of material is=');\n",
"B=u0*H;//magnetic flux density\n",
"disp('Wb/m^2',B,'magnetic flux density is=');"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 13.2: example_2.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;\n",
"clear all;\n",
"X=2*1e-3;//magnetic suseptibility of material at room temp.\n",
"H=1e3;//magnetic field intrnsity of piece of ferricoxide\n",
"u0=4*%pi*1e-7;\n",
"M=X*H;//magnetization\n",
"disp('A/m',M,'magnetization is=');\n",
"ur=X+1;//relative permiability\n",
"B=u0*ur*H;//magnetic flux density\n",
"disp('W/m^2',B,'magnetic flux density is=');"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 13.3: example_3.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;\n",
"clear all;\n",
"M=2.74*1e8;//magnetization per atom in A/m\n",
"a=2.66*1e-10;//elementry cube edge\n",
"n=2;//Iron in BCC\n",
"B=(M*a*a*a)/2;//Am^2 per atom\n",
"disp('Am^2',B,'Am^2 per atom=');\n",
"//interms of bohr megneton\n",
"b=B/(9.27*1e-24);//dipole moment\n",
"disp('bohr megnaton/atom',b,'dipole moment is=');\n",
"//slight variation in ans than book.. checked in calculator also"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 13.4: example_4.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;\n",
"clear all;\n",
"u0=4*%pi*1e-7;\n",
"b=9.27*1e-24;\n",
"H=1e3;//homogeneous field\n",
"k=1.38*1e-23;//boltzmann constant\n",
"T=303;//temp in kelvin\n",
"T1 = T - 273; // Temp In Degree\n",
"x=u0*b*H/(k*T);//avg magnetic moment\n",
"disp('bohr magneton/spin',x,'avg magnetic moment is=');"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 13.5: example_5.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"clc;\n",
"clear all;\n",
"ur=16;//relative permiability\n",
"I=3300;//intensity of magnetization\n",
"H=I/(ur-1);//strength of the field\n",
"disp('A/m',H,'strength of the field');"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Scilab",
"language": "scilab",
"name": "scilab"
},
"language_info": {
"file_extension": ".sce",
"help_links": [
{
"text": "MetaKernel Magics",
"url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
}
],
"mimetype": "text/x-octave",
"name": "scilab",
"version": "0.7.1"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
|
