dielectrics in electric fields (12)
dielectrics in electric fields (12)
... frequencies
for
determining
P(;c)
involves
the
following
steps:
The
integral sign
in
equation
(11.26)
may
be
replaced
by a
summation
by
dividing
the
film
into
n
incremental thickness, ... thermal pulsing experiment
in the
double
metallizing
and
single metallizing configurations. (Collins, 1980,
Am.
Inst.
Phys.)
The
observed properties
of the
electret
are i...
Dielectrics in electric fields (1)
... and
engineering, including
the
lastest
analysis
and
modeling
techniques.
As
the
editor
of the
Power Engineering Series,
I am
proud
to
include Dielectrics
in
Electric
Fields
among ... Power
Engineering
Series addresses
a
fundamental element
of
electrical engineering. Dielectric materials
are a key
element
of
electric power
engineering,
one of the
most challen...
dielectrics in electric fields (2)
... form
given
by
(1.3).
1
.4.3
FIELD
IN A
DIELECTRIC
DUE TO A
CONDUCTING
INCLUSION
When
a
conducting sphere
is
embedded
in a
dielectric
and an
electric
field
E is
applied
the field
... the
individual energy levels
transforming
into bands
is
still valid because
the
interaction between neighboring atoms
is
still present
in the
amorphous material just
as in...
dielectrics in electric fields (3)
... dielectric constant
of
many dielectrics depends
on the
temperature, even allowing
for
change
of
state.
The
theory
for
calculating
the
dielectric
constant
of
materials
possessing
... ferroelectrics clearly show. Certain polymers such
as
poly(vinyl chloride) also
exhibit
a
change
of
slope
in ds
/dT
as T is
increased
9
and the
interpretation
of
this data
in
t...
dielectrics in electric fields (4)
... dielectric
in
alternating
fields
is
examined
by the
approach
of
equivalent circuits which visualizes
the
lossy dielectric
as
equivalent
to an
ideal dielectric
in
series
or in
... consistent with
dc
fields.
As the
value
of n
increases
s'
changes with increasing
COT,
the
curves crossing over
at
COT
= 1. At
n=l the
change
in
s'
with increasing...
dielectrics in electric fields (5)
... Dekker, Inc. All Rights Reserved.
c,
h-
Fig.
4.6
Equivalent circuit
for two
dielectrics
in
series
for
interfacial polarization.
R,
R
*
Substituting equations (4.63)
and
(4.64)
in
(4.61)
... the
interfacial polarization that occurs
in the
boundaries separating
the
crystalline
and
non-crystalline regions,
the
former
region having much higher resistivity.
As the
frequ...
dielectrics in electric fields (6)
... approximately
the
main chain length
may
also exist
at
intervals
of a few
main
chain lengths.
The
degree
of
chain branching changes rapidly with density
and
comparing results obtained
by
different
... long backfolding;
MF
migrating
fold;
P
paracrystalline
lattice;
S
straight
chains;
SB
short backfolding;
SC
single crystals;
SF
single fibrils (cold stretched);
SM...
dielectrics in electric fields (7)
... shown
in
fig.
6.14
21
.
The
transformation
from
the
time
domain
to the
frequency
domain involves
the
assumption that
the
current
is
measured
in
the
interval
0 to
infinity,
... the
merging region
region
of
PMMA
has
been examined
by
Bergman
et. al.
(1998).
The
procedure adopted
for
transforming
the
frequency
domain data into time domain current involves...
dielectrics in electric fields (8)
... in
polymers
(Mizutani
and
Ida,
1988,
with permission
of
IEEE).
7.4
CHARGE
INJECTION
INTO
DIELECTRICS
Several mechanisms
are
possible
for the
injection
of
charges into
a
dielectric.
... also
inject
electrons into
the
dielectric.
We
first
consider
the
tunneling phenomenon.
7.4.1
THE
TUNNELING
PHENOMENON
In
the
absence
of an
electric
field
there
is a
c...
dielectrics in electric fields (9)
... ion
recombination
In
considering recombination many
of
these processes have
to be
taken into account
acting
in
combination
and the
decrease
of
electron density
due to
recombination
... for
generating
an
ion-pair
is a
minimum resulting
in
a
minimum sparking potential
of the
gas.
I.2A
•
0.8
A
C
Q
0.6A
0.4A
0.2A
0
ASYMPTOTE
-=
ORIGIN
TANGENT
LINE
STOLETOW
POINT
!...