Bethanie J. H. Stadler AIMD Group Outline Motivation (isolators) Garnet Layer –Fabrication...
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Transcript of Bethanie J. H. Stadler AIMD Group Outline Motivation (isolators) Garnet Layer –Fabrication...
Bethanie J. H. StadlerAIMD Group
Outline
• Motivation (isolators)
• Garnet Layer– Fabrication– Characterization
• Buffer Layers
• Permanent Magnets
• Photonic Crystals
Bethanie J. H. StadlerAIMD Group
SmCo : RF Sputtering
Demagnetized SmCo bar magnet on 8” Cu disk target Use confining ring Fused quartz substrates
Ar
SiO2 substrate
SmCo Target
Confining ring
RF Sputter System
Bethanie J. H. StadlerAIMD Group
0
50
100
150
200
250
300
350
30 32 34 36 38 40 42 44 46 48 50
2-Theta
Inte
ns
ity
[C
ou
nts
]
1 0
1
2 0
0
1 1
0
2 0
1
Sm
Co
5
Sm2Co17
XRD of Permanent Magnet Film
Majority phase is Sm2Co17
Bethanie J. H. StadlerAIMD Group
-1200
-900
-600
-300
0
300
600
900
1200
-1000 -750 -500 -250 0 250 500 750 1000
Applied Field [Oe]
Mag
net
izat
ion
[em
u/c
m3]
VSM of Permanent Magnet Film
Ms: 1177emu/cm3
Mr: 1024emu/cm3
Hc: 465Oe
Sm2Co17
SmCo5
Bethanie J. H. StadlerAIMD Group
Outline
• Motivation (isolators)
• Garnet Layer– Fabrication– Characterization
• Buffer Layers
• Permanent Magnets
• Photonic Crystals
Bethanie J. H. StadlerAIMD Group
Magneto Photonic Crystal
Hexagonal Photonic Crystal Array TE Band Gap
Point Defect Line Defect
Bethanie J. H. StadlerAIMD Group
Photonic Crystal Design
1.31m
Band Gap
Rod: YIG
Background: Air
Hole: Air
Background: YIG
TE/TM Band Structure
Fre
quency
(/
2c
) [
m-1
]
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
M K
TE/TM Band Structure
Fre
quency
(/
2c
) [
m-1
]
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
M K
Bethanie J. H. StadlerAIMD Group
Beam Propagation (FDTD) Simulation of Photonic Crystals
Rod: YIG
Background: Air
Hole: Air
Background: YIG
Bethanie J. H. StadlerAIMD Group
Nanopore Fabrication
Al PtElectrolyte
Stirrer
Temperature Bath
Aluminum
Anodized Aluminum
Oxide
Self Assembled
Nanopores
Self Assembled Nanopores in Aluminum Oxide
Bethanie J. H. StadlerAIMD Group
Nanopore dimension control
a=30nm, r=10nm a=100nm, r= 30nm
Bethanie J. H. StadlerAIMD Group
Bandgap Simulation
TE Band Structure
Fre
quen
cy (/
2c)
[m
-1]
0
1
2
3
4
5
6
7
8
9
M K
Bandgap for current pore dimensions corresponds to UV.
Bethanie J. H. StadlerAIMD Group
Photonic Crystal on YIG
Nanopore
Mask
YIGAir Holes,
YIG Background
YIG Rods,
Air Background
Bethanie J. H. StadlerAIMD Group
Conclusions
• Magneto-optics are important to integrated photonics.
YIG: secondary phases & temperature limiting. MgO buffer layers and SiO2 claddings successful.
SmCo permanent magnets are well developed.
Photonic Crystals structures simulated and
fabrication is begun.