Chemistry Reference
In-Depth Information
0.08
1.0
0.06
0.04
0.8
0.02
0.00
0.6
0.4
0.2
0.0
0.10
0.08
0.06
0.04
0.02
0.00
χ
−
1
Figure 6.39.
as a function of
T
normalized at RT for (a) a stabilized
α
-
p
-
NPNN thin film grown on a glass substrate and (b) a fully transformed
-
p
-NPNN
thin film. The inset in (a) shows a detail of the low-temperature region while in
(b) the low-temperature part of the
β
χ
T
vs.
T
curve is displayed. Molas
et al.
, 2003.
Reproduced by permission of the Royal Society of Chemistry.
both phases suggesting the initiation of a bulk magnetic transition. This is in line
with the results of the
β
-phase but raises some questions for the
α
-phase. A partial
transformation of the films to the
-phase can be ruled out since the films are stable
upon temperature cycles. Note that at RT the
g
-factors are noticeably different for
the two phases:
g
(
β
β
=
2.0101 and 2.0057 for the magnetic field perpendicular and
parallel to the substrate plane, respectively, and
g
(
)
α
=
)
2.0068 and 2.0070 for the
