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Magnetoresistance and space

Magnetoresistance and space. Anders Persson Ångström Space Technology Centre. Why magnetism and space?. Jan Bergman Very common satellite instrument Attitude control Space plasma physics. 0,79 g. 2 kg. Why small?. The Space Shuttle ~74 ton A launch required 2000 ton of fuel

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Magnetoresistance and space

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  1. Magnetoresistance and space Anders Persson Ångström Space Technology Centre

  2. Why magnetism and space? • Jan Bergman • Very common satellite instrument • Attitude control • Space plasma physics 0,79 g 2 kg

  3. Why small? • The Space Shuttle ~74 ton • A launch required • 2000 ton of fuel • 2.9 billion SEK • A nanosatellite weighs <10 kg • A launch requires • 50 000-100 000 SEK/kg • Piggy-back launches possible

  4. How small? • 1 nm = 0,000000001 m • 1 atom ≈ 0,1-0,2 nm 1 nm 87 nm

  5. How small is small? • 1 µm = 1000 nm • Ø human hair ≈ 100 µm Kreussenglas-kryssningsrobot

  6. How is it done? ESCA Pattern the sensors FIB Isolation Contacts

  7. Why is it difficult? • Patterning the sensors Redeposition Implantation

  8. How did it go? • Implantation • A study of the effects • Optimization of the process • Redeposition • Stop the etch in the barrier • 5-10 ggr more signal • Radiation • Equivalent to a Jupiter mission • No effects at all!

  9. What’s next? • Vietnamese satellite F-1 • Weighs 1 kg • Launch during, 2012

  10. …and also • Planar Hall effect senors • New type of sensor geometry • A complement at low frequencies 60 nm

  11. Promising performance Scalability Detection limit Sensitivity

  12. The next generation • New optimized design • 100 pTHz-0.5 @ 0.1 Hz • 30 pTHz-0.5 @ f>10 Hz

  13. Tack!

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