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Author(s)
Citation
Issue Date
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Magnetic properties of Fe[65](Ni[1-x]Mn[x])[35] ternary
alloys( Dissertation_全文 )
Shiga, Masayuki
Kyoto University (京都大学)
1967-03-23
https://dx.doi.org/10.14989/doctor.r905
Right
Type
Textversion
Thesis or Dissertation
author
Kyoto University
学 イ立 申 講 論 丈
志
賀
正 穿
( 1 )
Magnetic
Properties
of Fe65(Ni1 -xMnx)35
Masayuki
Department
of Metal
Kyoto
Science
University,
have
It
the
f.c.c.
was found
range
and Technology
Kyoto,
Japan
that
and the
x or with
the
spontanions
the
over
alloys
and are
In the
decrease
properties
)
of Fe(NiMn)
651
-xx35
structure
of 1x>0.3
of 0< x<0.3.
physical
properties
the
are
ternary
whole
range
magnetization
region,
decrease
of mean electron
alloys
in
are
alloys
of x were
antiferromagnetic
ferrqmagnetic
ferromagnetic
of the
Alloys
SHIGA
( Received 5er. 2) oa
Magnetic
Ternary
in
investigated.
the
the
composition
the
Curie
rapidly
with
concentration.
discussed
on the
which
composition
range
temperature
increasing
Many
basis
of
three
( 2 )
postulates,
2)
i.e.,
electrons
electrons
and
bases.
have
localized
between
The
at
origin
the
1)
Ni
electrons
sites
atomic
of
have
itinerant
character
the
at
localized
character
in
the
distance
Invar
Mn sites
the
ferromagnetic
the
is
itinerant
character
in
and
effect
have
magnetic
qualitatively
and
character,
3)
at
antiferromagnetic
range.
moment
explained
sites,
range
The
is
Fe
relation
discussed.
on
these
( 3 )
§ 1.
Introduction
As results
that
a f.c.c.
that
r-iron
of recent
iron
alloys
properties
FeMn alloys,
other
hand,
However,
iron
other
upon
for
element
example,
nickel
rich
rich
f.c.c.
It
3d metals
the
FeNi
became
are
have
is
evident
known,
different
of solute.
however,
magnetic
Face
centered
antiferromagnetic5-'6).
alloys
are
FeNi alloys
typically
which are
On the
ferromagnetic.
called
as the "Invar
havemanyanomalousmagneticpropei-ties8-'10)
Kondorsky
and Sedov3)
explained
of an assumption
that
ing ions
in a f.c.c.
"latent
it
antiferromagnetic.
with
depending
cubic
alloy"
is
invrstigations1'2),
of iron
the
the
exchange
antiferromagnetism"
Invar
integral
lattice
anomalies
of electrons
is negative
in the Invar
on the basis
of neighbour-
which entails
alloy .
In order
a
to explain
the anomalies of the Invar alloy,
on the other hand, Weiss9)
assumed the existence
of two electronic
states
in r-iron,
one of.
which (
state
) is antiferromagnetic
and realized,
for example,
in FeMn alloys
realized,
for
of the states
and another
one ( T1 state)
example,
in nickel
depends
upon a sort
case of the Invar alloy,
rich
of
the thermal
Thus
,
the
Invar
excitation
the
electronic
ferromagnetic
FeNi alloys.
and
The stability
and amount of the
solute.
In the
the yl state might be a ground state and
the Y.: state could be thermally excited.
anomalies
is
alloy
could
be
He showed that many
quantitatively
explained
by
of the et; state.
structure
or
the
type
of
magnetic
coupling
( 4 )
of iron
atoms in f.c.c.
of the element
of solute
tration.
'Thinking
electron
concentration
the electronic
nately,
properties
elements
as the
factor-
while
valuable
information
the origin
f.c.c.
containing
been well
investigated.
was adjusted
is
to get
2) The alloy
region.
of f.c.c.
to obtain
alloys
because
system
and
realizes
concentration,
and manganese
difference
are
chosen
from iron
is
FeNi and FeMn alloys
Y of these
about r-iron
iron
alloys
of the
present
itself,
it
as rich
does not
of metallurgical
have
two contradictive
one of main purposes
too much iron
of
of (-iron
of electron
to satisfy
containing
be worth-
would bring
alloy
composition
information
concentration
the invetigation
Nickel
1) The valence
The iron
the number of
system will
this
a wide range
percent
of magnetic
structure
if
Unfortu-
system having
electron
Fey(Nii _xMnx)i_y
effect,
properties
containing
alloy
the electronic
1) Since
alloy
change
Among them,
covering
f.c.c.
structure
iron
determining
coupling.
we need not limit
alloys
about
as follows:
binary
concen-
a mean
as a factor
we took the.mean
a ternary
as 65 atomic
investigation
of f.c.c.
since
as follows:
2) Magnetic
desired
However,
8 electron/atom
small.
iron
8, where a drastic
of the Inver
the reasons
factors
any f.c.c.
by its
we take
of magnetic
of the
alloys
collectively,
or the type
the problems.
properties
must be dominated
ratio
to two,
magnetic
not only by the sort
or electron/atom
near
Then,
to study
stable
factors
is expected.
solute
for
both
we can not. find
ratio
is determined
but also
structure
electron/atom
also
alloys
exist
limitation.
is
as possible.
in the
form
In this
( 5 )
paper,
the
Fe65(Ni1
these
results
-xMnx)35
alloys
2.
and
of
X-ray
alloys
are
the
iron
of
and
ingots
industion
Bulk
small
alloys
were
of
NiMn alloys
using
samples
ingots.
4.2°K
All
of
so
the
effect
are
anneal
at
chemical
iron
expressed
diffraction
studies
treatment,
revealed
crucibles
rich
in
1000°C
can
evacuated
for
two
results
of
Therefore,
all
ozorth
cut
alloys
from
ferromagnetic,
of
correctly
quartz
of
of
magnetization
estimated.
tubes
and
Composition
which
are
given
settles
of alloys
by the formula Fe65(Ni1 -Mnx)35'
X-ray
of the fillings,
that
there
were
in
65
is
which were given the same heat
is not any Wase other
the lattice
given
between
the composition
temperature
nitrogen
are
days.
an
raLtmosphere
were
be
electrolytic
in
measurements
constant
measurements were made by means of a torsion
below liquid
an
alloys
for
pure
composition
and
field
composition
and, at the same time,
nitrogen
of
discussed.
measurements
nickel
analysis,
and 66 atomic percent.
liquid
of
structure
together
desired
were•prepared
were,sealed
The
correctly
of
samples
Table
I.
some
a demagnetizing
by
electronic
by melting
magnetic
that
determined
measurement
the
having
alumina
samples
a homogenizing
Invar
prepared
for
Since
spherical
at
of
and
magnetic
Procedures
furnace
argon.
the
the
and
given
origin
Experimental
All
studies
than f.c.c.
was determined.
Magnetic
Magnetometer above
up to about 1000°K.
Measurements
temperature down to 1.3°K were made by using
1) B
type magnetometeri.
Magnetization measurement were
( 6 )
made at
around
the
Curie
temperature
and
the
exact
Curie
temperature
H/was
determined
bymeans
ofthe0-r1/5plotting.
§ 3.
ExperimentalResults
3.1.
Lattice
constant
The lattice
must
constant
be noted
the
that
decrease
abruptly
the
at
having
the
alloys
in
the
almost
room temperature,
this
region
is
This
change
of the
range
where
on the
the
side
extra
lattice
observed
and
4.21(
A relative
10
length
can be estimated
thermal
coefficient
of the
temperature
up to
it
has
value
at
200C for
ordinaryLvalue
method,
i.e.,
the
alloy
Curie
and
As is
is
very
a:length
the
constant.
are
ferromagnetic
lattice
constant
in
of ferromagnetism.
of
difference
between
the
from the
linear
thus
from
This
the
known,
part
obtained
of x=0 .
small
versus
room
occurrence
well
temperature.
at
with
lattice
expansion
alloy
occurs
Fig.l
by the
value
the
measurement.
Invar
the
of this
from another
expansion
caused
O.2.< 3cs 1.0
Two arrowsin
point
of the
It
with
of
coincides
of the
1.
linearly
,.
occurrence
extrapolated
Fig.
range
arrow
increase
from
in
transition
left
constant
can be estimated
graph.
of x<0.2
of this
to the
ferromagnetism
the
the
minimum value
left
the
given
decreases
a magnetic
of the
attributable
value
are
constant
The position
composition
alloys
concentration.in
composition
temperature.
Since
lattice
of manganese
and increases
indicate
the
of the
temperature
value
of
thermal
from around
Above the
is
analysis
the
of
expansion
room
Curie
curve
temperature,
is
( 7 )
almost
linear.
When this
linear
part
extrapolated
to
between
value
and the
observed
value
of this
difference
this
The relative
4.0
X 10-3
in
Hopkinsl2)
length,
were
On the
mental
room temperature,
used.
other
error
where
hand,
near
any
the
(right
side
This
) regions.
ordering
does
not
alloy.
This
fact
temperature
since
the
ordering
is
3.2.
Magnetic
a)
0< x <01,23
than
magnetization
this
The Curie
with
spontanious
results
and inverse
composition
x.
and
the
change
experi-
boundary
( left
of
hand
of antiferromagnetic
change
constant
as the
of
FeMn alloy6)
by the
ofithe:Invar,a1loy
Inver
result
of the
caused
magnetic
by order
were
temperature
susceptibility
alloys
the
In order
magnetization
of magnetization
within
the-experimental
lattice
of the
range,
temperature
increasing
indicates
occurrence
with
of volume
that
agreement.
recognized
volume
and
of one.
properties
The experimental
In
consistent
value
smaller
the
as
by Lohr
) and paramagnetic
so large
of the
difference
expansion.
data
in good
which
side
the
is
20°C was estimated
was not
that
accompany
expected
are
expansion
as magnetic
expansion
arrow,
hand
dependence
at
anomaly
means
is
one
values
right
antiferromagnetic
we may regard
thermal
Both
of thermal
at
carried
were
given
are Apparently
saturation
liquid
of
Fig.
2.
ferromagnetic.
an exact
H-.0, Measurements
at
in
magnetization
to obtain
out
dependence
decrease
value
of field
helium
of the
dependence
temperature.
( 8 )
The results
atom
4 ).
law
average
magnetization
tration
at
the
versus
the
Curie
the
obtained
number
taken
alloys
Curie
the
from
figure,
as abscissa
obtained
temperature
as well
by Crangle
It
x and also
the
confirmed
that
The
and Hallaml3)
on a common line.
versus
concen-
as x.
both
temperature
the
constant
mean electron
concentration.
lie
4 shows
spontanious
of mean electron
results
obeys
Curie-Weiss
the
the
per
results
Figure
from
obtained
number
from this
of x5.0.12.
In this
of FeNi
that
alloys
number
magneton
was obtained
above
the
N is
as a function
shows
The average
4.2•K
4.2°K.
alloys
number
surprising
is
is
rather
Figure
Neel
5
temperature
x.
b)
x0.35
Neutron
alloys,
are
for
magneton
of the
magneton
3.
The susceptibility
Bohr magneton
the
given
in Fig.
to A=0 at
Curie-Weiss
effective
and
given
extrapolated
( Fig.
the
are
diffraction
which
studies6,7)
corresponds
antiferromagnetic.
characteristics4,6),
the
temperature
suggests
itinerant
manganese
bility
difficult
at
is
This
nickel
because
for
nearly
character
substituted
increases
6 and 7.
spins
is
in
the
present
Antiferromagnetism
peculiar
Neel
to x=1.0
and becomes
of
ternary
alloy,
in
this
other
terms
a quantitative
shows
susceptibility
above
This
alloy-
hand,
dependent
estimation
alloy
independent.
on the
in
However,
of ambiguity
the
of 3d electron
may be interpreted
sites.
example,
temperature
FeMn
of this
temperature
by nickel,
f.c.c.
the
fact
When
suscepti-
as shown in
of, localization
treatment
of the
constant,
of
is
Figs.
( 9 )
paramasnetic
that
the
temperature
similar
is
susceptibility
to
that
observed
at
versus
the
in
c)
the
Neel
curves
ionic
The Neel
should
susceptibility
antiferromagnet
and
Curie-Weiss
The Neel
is
temperature
quite
a sharp
peak
susceptibility
law
temperature
be noted
is
The inverse
the
5 as a function
It
above
given
4000K
in
Fig.
of FeMn alloys
for
5 as
is
also;
of N.
x00.3
When the
curves
temperature,
which
temperature
region,
fore,
it
is
given
of composition
are
given
they
interesting
composition
in Fig.
8.
will
ferromagnetism
was found
in
this
mentioned
inanother
we can
in
this
alloy
other
the
near
the
at a low temperature.
• 14)
paper.
Neel
to lower
x=0.3.
Therein
measurements
magnetization
of existence
coexistence
and
this
is
of magnetization
20 K.
Tn .fact,
Curie
magnetically
of magnetic
than
the
extrapolated
dependence
terms
alloy.
of
behaves
20 K, but
expect
are
each
alloys
lower
in
5,
result
above
can be interpreted
Then,
Fig.
The temperature
character
ordering.
dependence
cross
A sample
when a temperature.becomes
zation
in
how the
range.
ferromagnetic
and
of the
obey
of x and N.
Fig.
alloy.
temperature.
of x4 0.5.
a function
given
dependence
of a usual
temperature
alloys
of matrix
This
fall
has
falls
abruptly
of the magneti-
of antiferromagnetic
of antiferromagnetism
an exchange
Details
anisotropy
will,, be
s( 10 )
§ 4.
Discussion
As the
that
the
system
are
results
of magnetic
magnetic
change
properties
markedly
as follows:
I)
ferromagnetic
The Curie
almost
the
with
linearly
Curie
x=0.
b) With
c)
rn the
It
seems
magnetic
two types,
type
the
local
i.e.,
hand,
decreases
temperature
the
facts
for
dependent,
Curie-Weiss
withing
suggests
above
independent
the
law.
limit
itinerant
of the
character
localized
is
the correlation
occurs.
and alloys
the induced
or the induced.
Now,we shall
into
band
The permanent
the main factor'
energy,
to
moment, which is essentially
moment.
more or less
energy
metals
attempt
moment, which is essentially
moment is the permanent
moment state
decrease
temperature
gave a theoretical
and a permanent
accompanies
is
2),a)
Bailyn15)
an. induced
Correlation
stronger
these
).
a) The su,sceptibility
moment in 3d transition
same as Anderson's
atomic
obeys
from
<xKl
magnetization
temperature
becomes
it
Especially,
magnetization,
generally
2),
is
x, it
alloys,
changes
in FeMn alloys.
On the other
classify
x.
to explain
model.
evident
( 0.3
The Neel
temperature
ferromagnetic
of 3d electron
spontanious
x.
decreasing
ordering
antiferromagnetic
decreasing
Neel
difficult
localized
the
increasing
with
or the
of magnetic
) to
and
became
5(Ni1-xMnx)35ternary
alloy
The main features
which emerged
x.
The type
Temperature
it
of Fe6
with
( oK x <0.3
monotonically
measurements,
moment.
to decide
The intrawhether
Of course
the more easily
see that
moment
the
the
the permanent
many characteristics
( 11 )
of the
present
postulates
alloy
system
can be understood
The local
moment at
manganese
2)
The local
moment at
nickel
3)-a)
The local
moment at
iron
ferromagnetic
magnetic
3)-b)
to
sites
is
the
0.4
at
induced
of neutron
stantial
nent
moment"-
moment"
moment"
moment"
in
in
anti-
ferro-
that
the
or the
small
moment,
this
fact
is
strongly
Invar
of local
the
in
of
in
His
the
order
addition
critical
energy
field
at
preliminary
field
consistent
is
with
supported
induced
condition
the
and als6
causes
iron
a
nuclei
alloy
was
of x=
MOssbauer
experi-
characteristic
the
to
postulate
Bailyn,
in addition
which
it
The postulate
by paramagnetic
According'to
moment is
supports
moment state.
internal
transition
of Mn< Fe< Ni and
antiferromagnetic
by a
alloy18)
result
in
ratio
correlation
the
is
energy
electron/atom
permanent
temperature
this
by the
amount
temperature
a correlation
An internal
50 IcOe for
3)-b)
Curie
ratio.
a large
Assuming
moment near
that
increase
optional.
helium
amount
below
a substantial
moment.
energy
The postulate
alloy,
1) and 2) because
as about
ment17).
the
induced
electron/atom
somewhat
liquid
the
with
accepted
determined
"induced
"permanent
"induced
Invar
moment state
is
is
always
always
in
showed
correlation
3)-a)
sites
Beeby16)
postulates
localized
is
and is _"permanent
permanent
increases
generally
sites
is
alloys
moment is
Recently,
present
sites
alloys.
At iron
local
the
three
as follows:.
1)
metals
by introducing
distinguishes
3)-a).
scattering
a
to the
subpermathe
( 12 )
permanent
moment state
Consider
since
the
the
iron
Invar
from
atom
alloy
the
induced
moment state.
in
the
Invar
alloy
has
the
composition
to be in
this
near
boundary
the
ferromagnetic
and antiferromagnetic
range
for
the
moment state.
the
permanent
moment is
regard
expected
the
below
postulates
the
3)-a)
Now, many experimental
this
model
4.1.
Susceptibility
temperature
hardly
obeys
consistent
affected
the
that
the
the
a very
means
that
distance
by local
Neel
moment in
of
critical
the
Thus,
local
we may
one another.
in
other
terms
of
the
localization
peak'
a spin
fluctuation
the
the
and
the
Curie
the
ordering
In the
It
case
of
susceptibility
This
sites.
can be
It
for
force
temperature
must
example
temperature.
coupling
of composition.
of FeNi
temperature.
nickel.
Neel
as assumed
susceptibility
of FeNiMn alloys,
at
fact
suggests
phase
temperature.
at
almost
This
paramagnetic
makes
Neel
is
model
2) and 3)-a).
antiferromagnetic
and
spin
law above
susceptibility
sharp
temperature
FeMn alloys
hand,
of nickel
above
spin
ordering
temperature.
the
postulates
an addition
from
have
magnetic
locatized
Curie-Weiss
dependent
understood
range
between
the
can be interpreted
the
from the
With
FeNiMn alloys,
long
increase
as dependent
of f.c.c.
On the
the
temperature
the
above
of localized
alloys
probably
above
understood
postulates.
x=0.4,
and -b)
susceptibility
by the
be noted
or near
temperature.
results
independent
an absence
is
Curie
the
condition,
as follows.
The magnetic
is
Then,
We may
This
spreads
is
The long
over
little
range
force
( 13
is
naturally
4.2.
expected
Paramagnetic
Recently,
of
by
the
at
the
far
atomic
time
Inver
moment
in
the
than
the
a study
time
of
as
indicates
phase,
of
at
neutron.
electron.
by
paramagnetic
large
1.4),A
3d
electron
8
spins
scattering
scattering
temperature.
estimated
result
of
and
Fairly
Curie
paramagnetic
passing
neutron
alloy.
was
This
character
of
made
above
independent.
moment
itinerant
scattering
Collins18)
neutron
observed
from
)
The
and
it
the
existence
least
for
The•mean
was
mean
is
value
of
temperature
of
longer
localized
period
magnetic
of
moment
in
the ferromagnetic
phaseis estimatedas about2.2)-e)whichis
larger
than
'
consider
field
that
this
in
extra
as expected
of neutron
both
caused
from postulate
the
large
alloys
A similar
by scattering
moment in
by means
of the
the
o.4)als
value
for
resistivity
Shirakawa21)
resistivity
is
3)-b).
by spins.
analysis
developed
1.8145
35 percent
measurement
studies
FeNi
of the
phase
the
manganese
alloy
were
in good
scattering
scattering
validity
of our
magnetic
disorder
can be roughly
nickel
FeMn alloy,
where
and Nakamura
agreement.
resistance
of
estimated
and Marotta20).
35 percent
used.
model.
The mean value
by Weiss
for
by Shiga
are
the
molecular
(cf.O.SIA;).
of paramagnetic
of electron
paramagnetic
for
smalli9)
in
the
We may
Paramagnetic
comparatively
difference
by 0.8)01,3.
one by ferromagnetic
was observed
of about
the
phase
as an evidence
effect
magnetic
got
paramagnetic
moment as induced
by FeMn alloy
We may regard
between
the
4)
for
The results
We
FeNi
the
FeMn
alloy
data
of
and by
of neutron
and
and
( 14 )
4.3.
The origin of the Invar effect and an atomic distance
Weiss9) gave an'elabolate
explanation on the origin of
Invar effect assuming the existence of two electronic
in the c-iron.
the
state
(t,
)
The present model is somewhatanalogous to
Weiss': The induced momentstate corresponds to the 11state and
the permanent momentstate to the r:Lstate.
dependence
is
of
somewhat
the
different
Lattice
constant
abruptly
near
x=0.2,
alloy
ature22).
In
iron
atoms
tively
the
lattice
that
of
the
above
moment
magnetized
spin
at
the
upper
On the
the
alloy
the
of
contrary,
of
so
assumption
atomic
3d
in
the
on
the
with
of
thermal
just
below
just
at
room
expansion
of
the
Curie
origin
to Weise
the
increase
of
the
Curie
magnetic
the
the
moment
condition
is
let
of
the
of
If
an
qualita-
the
discuss
magnetic
perfectly
with
occupied,
character
or
moment
the
function
fully
the
model.
us
between
Wannier
state
is
Now,
the
of
accompanies
effect
relation
'antibondiag
local
temper-
temperature.
Invar
sites
delocalized
changes
contrast
In
atomic
hand,
is
postulates.
moment,
band
model.
ferromagnetic
called
distance.
local
by Weiss'
in
below
of
scattering
temperature
the
present
corresponding
part
Curie
neutron
other
coefficient
distance,
by
state
on the
indicate
increase
atomic
the
alloys,
the
by
predicted
constant
Invar
mentioned
and
is
we discussed
the
explained
obtained
discontinuously
of
in
we assume
changes
4.2.,
what
the
facts
section
increase
where
These
increase
the
FeNiMn
Moreover,
Invar
extra
moment
from
of
temperature.
the
magnetic
However, the temperature
must
weakly
up
-
so
that
be
occupied.
polarized
( 15
state,
the
occupation
character
half
can
filled.
the
a resonable
atomic
the
most
atomic
and
the
larger
important
change
understood
from
the
for
the
the
atomic
the
the
by
is
are
state
on
the
antibonding
Thus,
the
i.e.
between
larger
On the
Invar
vie got
relation
., the
distance.
of
nearly
has
expected.
distance,
atomic
antibonding
orbitals
assumption
ferromagnetic
above
with
occupied
distance
characteristic
caused
state
when
strongly
moment
moment,
volume
more
larger
electronic
especially
explanation
magnetic
the
avoided,
The
character,
the
be
of
)
effects
ordering.
other
is
This
the
the
effect
hand,
large
is
arguments.
Acknowledgments
The
for
auther
wish
encouragements
and
Takaki
and
members
Thanks
are
due
ment
for
of
to
magnetization
chemical
to
analysis
of
express
his
instructive
his
thanks
J.
Professor
discussions
laboratory
IBM Thomas
to
Watson
at
low
temperature
of
the
alloys.
for
and
usefull
Research
and
Y. Nakamura
Professor
discussions.
Center
also
H.
to
for
Dr,
measureJ.
Matsuoka
( 16 )
References
1)
S.
C. Abrahams,
127 (1962)
2)
Appl.
C. J.
Phys.
3)
V- L. Sedov:
4)
M. Shiga
5)
C. Kimball,
J.
2L (1964)
E.
9)
R. J.
10)
I.
S. Kasper:
Phys.
Rev.
and H. Wiedersich:
JETP
J.
15 (1962)
Phys.
Soc.
and A. Arrott:
88.
Japan
J.
19
Appl.
(1964)
1743.
Phys.
1046.
and Y. Ishikawa:
J.
Phys.
Soc.
Japan
1281.
and J.S.
Kasper:
J.
Phys.
Chem. Solids
1743.
and V.L.
Weis:F:
Y. Nakamura,
Proc.
M. Shiga
Sedov:
Phys.
J.
Soc.
Appl.
Phys.
82 (1963)
2811.
and N. Shikazono:
J.
31
Phys.
(1960)
Soc.
331s.
Japan
1177.
R. M. Bozorth,
H. J.
Williams
103 (1956)
572.
12)
J.
and
13)
J. Crangle and G. C. Hallam:
14)
Y. Nakamura and N. Miyata:
15)
M. Bailyn:
16)
J. L. Beeby:
17)
M. Shiga et a1
18)
M. F. Collins:
M. Lohr
Muir
2373.
Phys.
W. D. Gerber
Kondorsky
19 (1960
11)
Sov.
S. Kouvel
8)
A.H.
34-(1963)
H. Umebayashi
21 (1966)
7)
Meechan,
and Y. Nakamura:
34 (1963)
6)
and J.
2052.
U. Gonser,
J
L. Guttman
C.- H. Hopkins:
Phys. Rev.
Phys. Rev.
and
D. E. Walsh:.
Trans.
Phys.
AIMME 135 (1939)
Proc. Roy. Soc.
to be Published.
139 (1965) A1905.
141 (19667-781.
Phys. Soc.
535.
A272 (1963) 119.
to bP published.
Proc
Rev.
86 (1965) 993•
( 17
19)
R. Nathans
25 (1964)
20)
R. J.
and S.
Pickart:
and A. S.
Marotta:
Phys.
Chem.
Solids
J.
Phys.
Chem.
Solids
302.
21)
Y. Shirakawa:
Sol.
Sci.
22)
R. M. Bozorth:
Feri
Ferromagnetism
1951
J.
183.
Weiss
9 (1959)
J.
)
) p447.
Rep.
Tohoku
27
Univ.
(
D.
Van
(1939)
Nostrand,
485,
Prinston
Figure
Fig.
1
The
lattice
ternary
constant
alloys
indicates
at
versus
at
the
room
Captions
room
composition
which
the
has
right
the
arrow
Neel
-xMnx)35
The
which
The
has
Fe65(Ni1
temperature.
temperature.
composition
x of
left
arrow
Curie
temperature
indicates
the
temperature
at
room
temperature.
Fig.
2
6
and Yx versus temperatureof FeNiMn
alloys at
8600 Oe.
Fig.
Fig.
3
4
Numbers of two figures
for
example,
6
versus
05 corresponding
obtained
at 4.2°K.
Bohr magneton number of FeNiMn alloys
from the
Curie-Weiss
constant
magneton number of FeNiMn alloys
of x and mean electron
magneton
of N
Fig.
5
( according
to Crangle
and the
alloys
of
( N ).
is also
Curie
of FeNi alloys
given
as a function
).
of FeNiMn'
concentration
of FeMn alloys
are also
The mean
temperature
mean electron
The Neel temperature
temperature
at 4.2°K as a function
and Hallam13)
The N6e1 temperature
as a function
and the mean
concentration
number of FeNi alloys
and x.
a composition,
to x=0.05.
H of FeNiMn alloys
The effective
indicate
given
( N )
and the
Curie
as a function
of N.
Fig.
6
6
0.35,
Fig.
7
X.
0.70,
Fig.
X
8
and 16: versus temperatureof FeNiMn
alloys of x=
0.40
and 0.50
versus
0.90
at10000
temperature:
and 1.00
6
andversus
x=0.30
atl0000
Oe.
of FeNiMn alloys
( FeMn )
temperature
Oe.\
of x=0.50,
at 8600 Oe.
of FeNiMn alloys
of
0.60,
Table
Results
and
of
mean
Sample
Number
I
chemical
analysis
concentration
of
Ni
of
outer
Mn
Fe65(Ni1 _xMnx)35
shell
Fe
electrons
x
alloys
N ).
N
00
34.82%
0.03%
65.14%
0.0
8.695
05
33.27
1.59
65.20
0.046
8.654
09
31.50
3.06
65.43
0.089
8.600
12
30.48
4.35
65.15
0.124
8.565
16
29.15
5.56
65.28
0.160
8.527
19
27.8o
6.53
65.65
0.190
8.489
23
26.73
7.84
65.41
0.226
8.455
30
23.93
10.03
65.86
0.295
8.364
35
22.21
12.10
65.67
0.352
8.322
40
20.60
13.96
65.41
0.404
8.270
50
16.95
17.07
65.97
0.502
8.167
60
13.66
20.74
65.60
0.603
8.066
70
10.12
23.93
65.95
0.703
7.963
90
3.43
30.61
65.95
0.899
7,761
FeMn
0.0
Fig.
3,61
A
3.60
0
0
3,59
0\1
0
3.58
0
FeN
o
0,2
135
0.4
0.6
0.8
1.0
FecMn35
Fla
2
I
cr
^
00
X -1
160
emu
•
05
3X
104
•
09
120
23
/
/0;2771196
2
12
12
80
•09
•
>05
16
V°4
19
40
23
O
0
•
200
400
600
800
l000°K
C31
%-)a)
E
(2)
0
O
CAP
CO
I-1CI
c\P
a)
0 GAP
CZ)
Fig.
4
77-
Peff
Neff
2.0
I-LB
P-B
3
1.5
Jo
1.0
2
0.5
1
FeNiMn
^IM0^111=1M
—C1--
N
8.
8.4
8,
1
X
4
0.3
0.2
0.1
Fe Ni
0.0
Fi g . 5
X
11.0
0.0
0.5
600
°K
400
TN
Tc 70
200
7.5
—o--
Fe NiMn
—0--
—0--
Fe Mn
—Ca— Fe N i
8.5
8.0
N
FeNiMn
9.0
Fig,
61
X-11
0-
X1_04
4
S
3
emui
g
2
3
1
eeee0.4"):.)evo.A0;_50),,ce°
40
35
ct-a-44
200
400
°K
800
600
2
40
1.
50
0
100
200
300
400
°K
4
)
•IMMINED
V1
N-
••
Ll..
Xe0c's'
....4=
K
E
a)
co
*
C)
Le5
..:14
CD
e$
t....
C\P
CC
LL
c:,
a)
0
.0
0
0
.-.4
0
00
o
CG
cs
c•
N
lz)
Fig.
8
4./
I
2
15
emu
x 104
30
10
200
400
5
30
0
100
200
300°K
600
800°K