Biomedical Engineering Reference
In-Depth Information
2.0
1.5
BFO-10_MH_300K
BFO-00_MH_300K
1.5
1.0
1.0
0.5
0.5
0.0
0
.
0
0
-150000 -100000
-50
000
50000
100000
150000
-150000
-100000
-500
00
0
50000
100000
150000
-0.5
Magnetic feild (H)(O e)
Magnetic Field (O e)
-0.5
-1.0
-1.0
-1.5
-1.5
-2.0
(
a
)
(
b
)
Figure 13.24
M~H curve of Bi
1-x
La
x
FeO
3
(x=0.0 and x=0.1) measured at RT.
D
2.0
2
BFO-20_MH_300K
BFO-30_MH_300K
1.5
1.0
0.5
0.0
0
-150000
-100000
-500
00
0
50000
100000
150000
-150000
-100000
-50000
0
50000
100000
150000
Magnetic field (O e)
Magnetic Field (O e)
G
-0.5
-1.0
-1.5
-2
-2.0
(
a
)
(
b
)
Figure 13.25
M~H curve of Bi
1-x
La
x
FeO
3
(x=0.2 and x=0.3) measured at RT.
With a further increase of La concentration from x=0.1 to x=0.2, the
M~H curve (Figure 13.25a) gives a straight thin loop behavior without
saturation with remanence (M
r
) value of 0.934 emu/g.
With a further increase of concentration from x=0.2 to x=0.3, the area of
the M~H loop (Figure 13.25b) is slightly increased. h is indicates that the
canted spin moment increases from antiferro to ferromagnetic ordering.
A surprising increase in M
r
around 2.209 emu/g was observed in this case.
Further increase of concentration from x=0.3 to 0.4 indicates that the
area of the M~H loop (Figure 13.26a) increased more without saturation.
Similar behavior has been observed in the case of x=0.5 (Figure 13.26b)
