exploring rh and fe doped ruge for a new ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 ox =0.1...

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Exploring Rh and Fe Doped RuGe For a New Ferromagnetic Semiconductor

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Page 1: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Exploring Rh and Fe Doped RuGeFor a New Ferromagnetic

Semiconductor

Page 2: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Objectives

•Background on Spintronics

•Methods for Synthesis•Data and Results

Page 3: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

B20 Crystal Structureand Helimagnetism

Page 4: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Skyrmion

Page 5: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Synthesis

Arc-Furnace

RF Furnace

Page 6: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Annealing

Tube Furnace

Sealing of Quartz Tube

Page 7: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

X-Ray Diffraction

Page 8: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

SQUID

Superconducting Quantum

Interference Device

Page 9: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Susceptibility

Page 10: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Magnetization

Page 11: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94
Page 12: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Resistivity

Page 13: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

Questions?

Thank You

Page 14: Exploring Rh and Fe Doped RuGe For a New Ferromagnetic ......0.004 0.003 0.002 0 0.001 0.05 Ox =0.1 Ox = 0.15 = 0.2 400 -0.001 100 200 300 24 Cr Chromium 51.996 42 Molybdenum 95.94

References

http://www.engr.sjsu.edu/rkwok/squid.htm

http://jin.chem.wisc.edu/content/spintronics

http://www.nature.com/nature/journal/v465/n7300/full/465880a.html

http://www.geocities.jp/ohba_lab_ob_page/structure6.html