MOKE RESULTS JM16 100 micron square pads 50nm Ni/ C10-dithiol / 20nm Co Line scan across Pad5...
-
Upload
verity-hawkins -
Category
Documents
-
view
214 -
download
0
Transcript of MOKE RESULTS JM16 100 micron square pads 50nm Ni/ C10-dithiol / 20nm Co Line scan across Pad5...
MOKE RESULTS
JM16
100 micron square pads 50nm Ni/ C10-dithiol / 20nm Co
Line scan across Pad5
05-17-09
JM16
X Data
0 1000 2000 3000 4000 5000 6000 7000
Y D
ata
0
1000
2000
3000
4000
5000
6000
7000
5.0 5.5 6.0 6.5 7.0 7.5
Scans on this pad
2900 3000 3100 3200 3300 3400
21.2
21.4
21.6
21.8
22.05
10
15
20
9.0
9.2
9.4
9.6
9.8
6
7
8
6
7
8
2900 3000 3100 3200 3300 3400
Coe
rciv
ity
X position
1w s
at
2w s
at
outp
ut D
C
line
scan
DC
Y = 3070
7-point MOKEline scan
High-res. DCline scan
-200 -100 0 100 200
-10
0
10
1
-200 -100 0 100 200
-10
0
10
2
-200 -100 0 100 200
-10
0
10
3
-200 -100 0 100 200
-10
0
10
4
-200 -100 0 100 200
-10
0
10
5
-200 -100 0 100 200
-10
0
10
6
-200 -100 0 100 200
-10
0
10
7
2 plots
File reference: 050409-JM16-TenmaDirect-pad5line-R-10
-200 -100 0 100 200
-20
0
20
1
-200 -100 0 100 200
-20
0
20
2
-200 -100 0 100 200
-20
0
20
3
-200 -100 0 100 200
-20
0
20
4
-200 -100 0 100 200
-20
0
20
5
-200 -100 0 100 200
-20
0
20
6
-200 -100 0 100 200
-20
0
20
7
1 plots
-200 -150 -100 -50 0 50 100 150 200-30
-20
-10
0
10
20
30
1w/in
put
H (Oe)
down on pad up on pad down off pad up off pad
1w comparison – on the pad vs. off the pad
Observations
• Output DC intensity and 1ω signal show clear reductions on the pad. However, 2ω signal is barely changed (it has increased noise on the pad). Coercivity shows no change.
• These results are consistent with ferromagnetic coupling of the two layers.
• Still need to explain why the 1ω shows a larger change than the 2ω.
• A total of 10 pads were looked at on this sample. All showed similar behavior.
Individual hysteresis loops
“down” half of loop
“up” half of loop