summaryrefslogtreecommitdiff
path: root/3636/CH2
diff options
context:
space:
mode:
Diffstat (limited to '3636/CH2')
-rw-r--r--3636/CH2/EX2.1/Ex2_1.sce10
-rw-r--r--3636/CH2/EX2.1/Ex2_1.txt2
-rw-r--r--3636/CH2/EX2.10/Ex2_10.sce10
-rw-r--r--3636/CH2/EX2.10/Ex2_10.txt1
-rw-r--r--3636/CH2/EX2.2/Ex2_2.sce14
-rw-r--r--3636/CH2/EX2.2/Ex2_2.txt1
-rw-r--r--3636/CH2/EX2.3/Ex2_3.sce22
-rw-r--r--3636/CH2/EX2.3/Ex2_3.txt2
-rw-r--r--3636/CH2/EX2.4/Ex2_4.sce9
-rw-r--r--3636/CH2/EX2.4/Ex2_4.txt1
-rw-r--r--3636/CH2/EX2.5/Ex2_5.sce18
-rw-r--r--3636/CH2/EX2.5/Ex2_5.txt2
-rw-r--r--3636/CH2/EX2.7/Ex2_7.sce14
-rw-r--r--3636/CH2/EX2.7/Ex2_7.txt1
-rw-r--r--3636/CH2/EX2.9/Ex2_9.sce15
-rw-r--r--3636/CH2/EX2.9/Ex2_9.txt2
16 files changed, 124 insertions, 0 deletions
diff --git a/3636/CH2/EX2.1/Ex2_1.sce b/3636/CH2/EX2.1/Ex2_1.sce
new file mode 100644
index 000000000..486ab5ea6
--- /dev/null
+++ b/3636/CH2/EX2.1/Ex2_1.sce
@@ -0,0 +1,10 @@
+clc;
+clear;
+disp("Each corner sphere of the bcc unit cell is shared with eigth neighbouring cells.Thus each cell contains one eigth of a sphere at all the eigth corners.Each unit cell also contains one central sphere")
+S=2 //Sphere per unit cell
+
+//Calculation
+f=S*%pi*sqrt(3)/16 //maximum fraction of a unit cell
+
+mprintf("bcc unit cell volume filled with hard sphere= %i %%",round(f*100))
+
diff --git a/3636/CH2/EX2.1/Ex2_1.txt b/3636/CH2/EX2.1/Ex2_1.txt
new file mode 100644
index 000000000..f9733f701
--- /dev/null
+++ b/3636/CH2/EX2.1/Ex2_1.txt
@@ -0,0 +1,2 @@
+Each corner sphere of the bcc unit cell is shared with eigth neighbouring cells.Thus each cell contains one eigth of a sphere at all the eigth corners.Each unit cell also contains one central sphere
+bcc unit cell volume filled with hard sphere= 68 % \ No newline at end of file
diff --git a/3636/CH2/EX2.10/Ex2_10.sce b/3636/CH2/EX2.10/Ex2_10.sce
new file mode 100644
index 000000000..df8697a8e
--- /dev/null
+++ b/3636/CH2/EX2.10/Ex2_10.sce
@@ -0,0 +1,10 @@
+clear;
+clc;
+Na=6.02*10^23 // Avagadro Number in mol^-1
+AtWt=28.09 //in g/mole
+Density=5*10^22 //in atoms/cm^-3
+
+//Calculation
+DensityPerUnitVolume=(Density*AtWt)/(Na)
+
+mprintf("Density per unit volume= %1.2f g cm^-3",DensityPerUnitVolume)
diff --git a/3636/CH2/EX2.10/Ex2_10.txt b/3636/CH2/EX2.10/Ex2_10.txt
new file mode 100644
index 000000000..60579c628
--- /dev/null
+++ b/3636/CH2/EX2.10/Ex2_10.txt
@@ -0,0 +1 @@
+ Density per unit volume= 2.33 g cm^-3 \ No newline at end of file
diff --git a/3636/CH2/EX2.2/Ex2_2.sce b/3636/CH2/EX2.2/Ex2_2.sce
new file mode 100644
index 000000000..023554179
--- /dev/null
+++ b/3636/CH2/EX2.2/Ex2_2.sce
@@ -0,0 +1,14 @@
+clc;
+clear;
+// r = p*a + q*b + s*c
+p=1
+q=2
+s=3
+
+//Calculation
+LCM=lcm({p,q,s}) //LCM for computing miller indices
+rx=1/p*LCM //reciprocals
+ry=1/q*LCM
+rz=1/s*LCM
+
+mprintf("The plane depicted in the figure is denoted by (%i,%i,%i)",rx,ry,rz)
diff --git a/3636/CH2/EX2.2/Ex2_2.txt b/3636/CH2/EX2.2/Ex2_2.txt
new file mode 100644
index 000000000..87840a619
--- /dev/null
+++ b/3636/CH2/EX2.2/Ex2_2.txt
@@ -0,0 +1 @@
+The plane depicted in the figure is denoted by (6,3,2) \ No newline at end of file
diff --git a/3636/CH2/EX2.3/Ex2_3.sce b/3636/CH2/EX2.3/Ex2_3.sce
new file mode 100644
index 000000000..039dbc5e8
--- /dev/null
+++ b/3636/CH2/EX2.3/Ex2_3.sce
@@ -0,0 +1,22 @@
+clear;
+clc;
+//Atomic weigths
+Si=28.1
+Ga=69.7
+As=74.9
+Na=6.02*10^23 // Avagadro Number in mol^-1
+//(a)Si
+a=5.43*10^-8 //in cm
+n=8 //no. of atoms/cell
+
+//(b)GaAs
+a1=5.65*10^-8 //in cm
+
+//Calculation
+N=8/a^3 //Atomic Concentration in atoms/cc
+N1=4/a1^3 //Atomic Concentration in atoms/cc
+Density=(N*Si)/(Na)
+Density1=(N1*(Ga+As))/(Na)
+
+mprintf("Density of Si= %1.2f g/cm^3\n",Density)
+mprintf("Density of GaAs= %1.2f g/cm^3",Density1)
diff --git a/3636/CH2/EX2.3/Ex2_3.txt b/3636/CH2/EX2.3/Ex2_3.txt
new file mode 100644
index 000000000..482387273
--- /dev/null
+++ b/3636/CH2/EX2.3/Ex2_3.txt
@@ -0,0 +1,2 @@
+ Density of Si= 2.33 g/cm^3
+Density of GaAs= 5.33 g/cm^3 \ No newline at end of file
diff --git a/3636/CH2/EX2.4/Ex2_4.sce b/3636/CH2/EX2.4/Ex2_4.sce
new file mode 100644
index 000000000..43af4455c
--- /dev/null
+++ b/3636/CH2/EX2.4/Ex2_4.sce
@@ -0,0 +1,9 @@
+clear;
+clc;
+a=5*10^-10 //lattice constatnt in m
+
+//Calculation
+n111=1/(a^2*sqrt(3))
+
+mprintf("n(111)= %.1e atoms/m^2",n111)
+//2.3e+18 is 2.3*10^18
diff --git a/3636/CH2/EX2.4/Ex2_4.txt b/3636/CH2/EX2.4/Ex2_4.txt
new file mode 100644
index 000000000..4a18236a5
--- /dev/null
+++ b/3636/CH2/EX2.4/Ex2_4.txt
@@ -0,0 +1 @@
+ n(111)= 2.3e+18 atoms/m^2 \ No newline at end of file
diff --git a/3636/CH2/EX2.5/Ex2_5.sce b/3636/CH2/EX2.5/Ex2_5.sce
new file mode 100644
index 000000000..e90ea9749
--- /dev/null
+++ b/3636/CH2/EX2.5/Ex2_5.sce
@@ -0,0 +1,18 @@
+clear;
+clc;
+Cs=5*10^16 //impurity concentration in solid in atoms/cm^3
+ks=0.35 //segregation coefficient
+d=2.33 //density of Si in g/cm^3
+Na=6.02*10^23 // Avagadro Number in mol^-1
+Si=31 //weight of Si
+loadSi=4000 //initial load in gm
+
+//Calculation
+Cl=Cs/ks //impurity concentration in liquid
+V=loadSi/d //volume of the melt in cm^3
+Nummber_of_atoms=Cl*V //in atoms
+Wt=(Cl*V*Si)/(Na)
+
+mprintf("(a)Cl= %1.2e cm^-3\n",Cl)
+mprintf("(b)Wt of P= %.3e g",Wt) //The answers vary due to round off error
+
diff --git a/3636/CH2/EX2.5/Ex2_5.txt b/3636/CH2/EX2.5/Ex2_5.txt
new file mode 100644
index 000000000..8cb53ae46
--- /dev/null
+++ b/3636/CH2/EX2.5/Ex2_5.txt
@@ -0,0 +1,2 @@
+ (a)Cl= 1.43e+17 cm^-3
+(b)Wt of P= 1.263e-02 g \ No newline at end of file
diff --git a/3636/CH2/EX2.7/Ex2_7.sce b/3636/CH2/EX2.7/Ex2_7.sce
new file mode 100644
index 000000000..d6514602a
--- /dev/null
+++ b/3636/CH2/EX2.7/Ex2_7.sce
@@ -0,0 +1,14 @@
+clear;
+clc;
+// r = p*a + q*b + s*c
+x=3 //intercept on x axis
+y=4 //intercept on y axis
+z=5 //intercept on z zxis
+
+//Calculation
+LCM=lcm({x,y,z}) //LCM for computing miller indices
+rx=1/x*LCM //reciprocal
+ry=1/y*LCM
+rz=1/z*LCM
+
+mprintf("Miller indices of plane are (%i,%i,%i)",rx,ry,rz)
diff --git a/3636/CH2/EX2.7/Ex2_7.txt b/3636/CH2/EX2.7/Ex2_7.txt
new file mode 100644
index 000000000..c5536a97d
--- /dev/null
+++ b/3636/CH2/EX2.7/Ex2_7.txt
@@ -0,0 +1 @@
+ Miller indices of plane are (20,15,12) \ No newline at end of file
diff --git a/3636/CH2/EX2.9/Ex2_9.sce b/3636/CH2/EX2.9/Ex2_9.sce
new file mode 100644
index 000000000..c160de628
--- /dev/null
+++ b/3636/CH2/EX2.9/Ex2_9.sce
@@ -0,0 +1,15 @@
+clear;
+clc;
+a=8 //number of atoms shared by 8 cells
+b=6 //number of atoms shared by 2 cells
+c=4 //number of atoms shared by a single cell
+L=5.43*10^-8 //Lattice constant in cm
+
+//Calculation
+N=(a/8)+(b/2)+c //no. of atoms in each cell
+Volume=L^3
+Density=8/Volume
+
+mprintf("(a)no. of atoms in each cell= %i\n",N)
+mprintf("(b)Density of atoms in silicon= %.0e atoms cm^-3",round(Density))
+//The answer provided in the textbook is wrong
diff --git a/3636/CH2/EX2.9/Ex2_9.txt b/3636/CH2/EX2.9/Ex2_9.txt
new file mode 100644
index 000000000..276483688
--- /dev/null
+++ b/3636/CH2/EX2.9/Ex2_9.txt
@@ -0,0 +1,2 @@
+ (a)no. of atoms in each cell= 8
+(b)Density of atoms in silicon= 5e+22 atoms cm^-3 \ No newline at end of file
generated by cgit (git 2.34.1) at 2024-12-22 17:05:17 +0000