Added(A)/Deleted(D) following books

 A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter1.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter10.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter11.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter12.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter13.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter14.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter2.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter3.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter4.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter5.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter6.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/Chapter8.ipynb
A  Solid_State_Physics_by_Dr._M._Arumugam/screenshots/22.png
A  Solid_State_Physics_by_Dr._M._Arumugam/screenshots/33.png
A  Solid_State_Physics_by_Dr._M._Arumugam/screenshots/44.png
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/Chapter2_g1CooCv.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/Chapter4_y6WvPya.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/Chapter5_8YQCBnu.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter11_KNhAPle.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter1_UaQSIvn.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter3_2.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter6_xg51MMS.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter7_sTn1O6Y.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter8_wAsDeY9.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/chapter9_NbF92Qt.ipynb
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/screenshots/chap1_Ux1JjUJ.png
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/screenshots/chapter2_jrlMSB1.png
A  basic_electrical_engineering_by_nagsarkar_and_sukhija/screenshots/chapter6_HJhQnZO.png

1 files changed, 327 insertions, 0 deletions

diff --git a/Solid_State_Physics_by_Dr._M._Arumugam/Chapter11.ipynb b/Solid_State_Physics_by_Dr._M._Arumugam/Chapter11.ipynb
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@@ -0,0 +1,327 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 11: Magnetic Properties"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 1, Page number 11.31"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "temperature rise is 8.43 K\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "El=10**-2*50;       #energy loss(J)\n",
+    "H=El*60;      #heat produced(J)\n",
+    "d=7.7*10**3;    #iron rod(kg/m**3)\n",
+    "s=0.462*10**-3;    #specific heat(J/kg K)\n",
+    "\n",
+    "#Calculation\n",
+    "theta=H/(d*s);     #temperature rise(K)\n",
+    "\n",
+    "#Result\n",
+    "print \"temperature rise is\",round(theta,2),\"K\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 2, Page number 11.31"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "magnetic field at the centre is 14 weber/m**2\n",
+      "dipole moment is 9 *10**-24 ampere/m**2\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "e=1.6*10**-19;    #charge(coulomb)\n",
+    "new=6.8*10**15;   #frequency(revolutions per second)\n",
+    "mew0=4*math.pi*10**-7;\n",
+    "R=5.1*10**-11;     #radius(m)\n",
+    "\n",
+    "#Calculation\n",
+    "i=round(e*new,4);          #current(ampere)\n",
+    "B=mew0*i/(2*R);    #magnetic field at the centre(weber/m**2)\n",
+    "A=math.pi*R**2;\n",
+    "d=i*A;       #dipole moment(ampere/m**2)\n",
+    "\n",
+    "#Result\n",
+    "print \"magnetic field at the centre is\",int(round(B)),\"weber/m**2\"\n",
+    "print \"dipole moment is\",int(round(d*10**24)),\"*10**-24 ampere/m**2\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 3, Page number 11.31"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "intensity of magnetisation is 5 ampere/m\n",
+      "flux density in material is 1.257 weber/m**2\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "chi=0.5*10**-5;    #magnetic susceptibility\n",
+    "H=10**6;     #field strength(ampere/m)\n",
+    "mew0=4*math.pi*10**-7;\n",
+    "\n",
+    "#Calculation\n",
+    "I=chi*H;     #intensity of magnetisation(ampere/m)\n",
+    "B=mew0*(I+H);    #flux density in material(weber/m**2)\n",
+    "\n",
+    "#Result\n",
+    "print \"intensity of magnetisation is\",int(I),\"ampere/m\"\n",
+    "print \"flux density in material is\",round(B,3),\"weber/m**2\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 4, Page number 11.31"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "number of Bohr magnetons is 2.22 bohr magneon/atom\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "B=9.27*10**-24;      #bohr magneton(ampere m**2)\n",
+    "a=2.86*10**-10;      #edge(m)\n",
+    "Is=1.76*10**6;       #saturation value of magnetisation(ampere/m)\n",
+    "\n",
+    "#Calculation\n",
+    "N=2/a**3;\n",
+    "mew_bar=Is/N;      #number of Bohr magnetons(ampere m**2)\n",
+    "mew_bar=mew_bar/B;      #number of Bohr magnetons(bohr magneon/atom)\n",
+    "\n",
+    "#Result\n",
+    "print \"number of Bohr magnetons is\",round(mew_bar,2),\"bohr magneon/atom\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 5, Page number 11.32"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 8,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "average magnetic moment is 2.79 *10**-3 bohr magneton/spin\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "mew0=4*math.pi*10**-7;\n",
+    "H=9.27*10**-24;      #bohr magneton(ampere m**2)\n",
+    "beta=10**6;      #field(ampere/m)\n",
+    "k=1.38*10**-23;    #boltzmann constant\n",
+    "T=303;    #temperature(K)\n",
+    "\n",
+    "#Calculation\n",
+    "mm=mew0*H*beta/(k*T);    #average magnetic moment(bohr magneton/spin)\n",
+    "\n",
+    "#Result\n",
+    "print \"average magnetic moment is\",round(mm*10**3,2),\"*10**-3 bohr magneton/spin\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 6, Page number 11.32"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "hysteresis loss per cycle is 188 J/m**3\n",
+      "hysteresis loss per second is 9400 watt/m**3\n",
+      "power loss is 1.23 watt/kg\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "A=94;      #area(m**2)\n",
+    "vy=0.1;    #value of length(weber/m**2)\n",
+    "vx=20;     #value of unit length\n",
+    "n=50;      #number of magnetization cycles\n",
+    "d=7650;    #density(kg/m**3)\n",
+    "\n",
+    "#Calculation\n",
+    "h=A*vy*vx;     #hysteresis loss per cycle(J/m**3)\n",
+    "hs=h*n;       #hysteresis loss per second(watt/m**3)\n",
+    "pl=hs/d;      #power loss(watt/kg)\n",
+    "\n",
+    "#Result\n",
+    "print \"hysteresis loss per cycle is\",int(h),\"J/m**3\"\n",
+    "print \"hysteresis loss per second is\",int(hs),\"watt/m**3\"\n",
+    "print \"power loss is\",round(pl,2),\"watt/kg\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Example number 8, Page number 11.33"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "critical field is 33.64 *10**3 ampere/m\n"
+     ]
+    }
+   ],
+   "source": [
+    "#importing modules\n",
+    "import math\n",
+    "from __future__ import division\n",
+    "\n",
+    "#Variable declaration\n",
+    "H0=64*10**3;         #initial field(ampere/m)\n",
+    "T=5;                 #temperature(K)\n",
+    "Tc=7.26;             #critical temperature(K)\n",
+    "\n",
+    "#Calculation\n",
+    "H=H0*(1-(T/Tc)**2);      #critical field(ampere/m)\n",
+    "\n",
+    "#Result\n",
+    "print \"critical field is\",round(H/10**3,2),\"*10**3 ampere/m\""
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.11"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}