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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
39-21Magnetic Field Measurement
in resistivity (about 5% maximum). Figure 39.16 illustrates how the resistivity changes in permalloy
(a ni
ckel–iron
al
loy)
fo
r
a e
ld
ap
plied
pa
rallel
to th
e
cu
rrent
o
w
. As ma
gnetic
e
ld
is in
creased,
th
e
ch
ange
in re
sistivity
in
creases
an
d
as
ymptotically
ap
proaches
it
s
ma
ximum
va
lue
wh
en
th
e
ma
terial
ap
proaches
sa
turation
. Bo
zorth
[6
]
po
ints
ou
t
th
at
th
e
sh
ape
of th
e
cu
rve
an
d
th
e
ma
gnitude
of th
e
ch
ange
de
pend
on th
e
co
mposition
of th
e
al
loy
. Pe
rmalloy
wi
th
80
%
Ni an
d
20
%
Fe pr
ovides
a hi
gh
ma
g-
netoresistance
e
ect
w
ith
n
ear-zero
m
agnetostriction
a
nd
i
s
a f
avorite
m
aterial
f
or
m
agnetoresistors
.
e change in resi ...
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Publisher Resources

ISBN: 9781439848913