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Vectors/Coordinates
Cartesian
normalized
x
x/r
y
y/r
z
z/r
spherical
r
theta (rad)
theta (deg)
phi (rad)
phi (deg)
extra
eff
((x
2
+y
2
)
(1/3)
+z
(2/3)
)
(3/2)
=
Magnetic field
Tesla (flux density/induction)
Gauss (flux density/induction)
A/m (magnetization/field)
Oe (field)
emu/cm
3
(magnetization)
Material properties
magnetocrystalline anisotropy constant
K
1
J/m
3
saturation polarization
J
s
T
exchange constant
A
J/m
external field
B
ext
T
volume
V
nm
3
temperature
T
K
anisotropy field
H
ani
=2
K
1
/
J
s
A/m
T
exchange length 1:
l
exch1
=sqrt(2*
μ
0
A
/
J
s
2
)
nm
exchange length 2:
l
exch2
=sqrt(
A
/
K
1
)
nm
Bloch wall width:
d
Bloch
=π sqrt(
A
/
K
1
)
nm
Bloch wall energy:
E
Bloch
=4 sqrt(
A
K
1
)
J/m
2
Larmor frequency (anisotropy field)
GHz
precession period
ns
Larmor frequency (demag. field:=
J
s
)
GHz
precession period
ns
Larmor frequency (external field)
GHz
precession period
ns
thermal stability
K
1
V
/(
k
B
T
)
JavaScript code adapted from Rok Dittrich's \ref demagcalc with Rok's permission.
magpar - Parallel Finite Element Micromagnetics Package
Copyright (C) 2002-2009 Werner Scholz