Spunahreyfifræði og segulsviðsskynjarar / Spin dynamics and magnetic sensors - verkefni lokið
Fréttatilkynning verkefnisstjóra
The project involved a study of various micron-scale magnetic field sensors. These included magnetic tunnel junction sensors, perpendicular magnetization anomalous Hall effect sensors (FePt), and planar Hall effect sensors (NiFe, “Permalloy”).
Many spintronic devices are basically pillars or columns of metallic multilayers, includingsome ferromagnetic layers to manipulate electron spin, and sometimes with a tunnel junction included. Examples of these are magnetic tunnel junction memories and magnetoresistivefield sensors.
Heiti verkefnis:
Spunahreyfifræði og segulsviðsskynjarar / Spin dynamics and magnetic sensors
Verkefnisstjóri: Snorri Þ. Ingvarsson, Raunvísindastofnun Háskólans
Tegund styrks: Verkefnisstyrkur
Styrkár: 2012-2014
Fjárhæð styrks: 21,11 millj. kr.
Tilvísunarnúmer Rannís: 12000202
The project involved a study of various micron-‐scale
magnetic field sensors. These included magnetic tunnel junction sensors,
perpendicular magnetization anomalous Hall effect sensors (FePt), and planar
Hall effect sensors (NiFe, “Permalloy”). We found that the FePt anomalous Hall
effect sensors, that are by their nature and design less capacitive than the
tunnel junction based sensors, could be operated up to frequencies as high as 1
GHz, but can be pushed even further by improving on the electrical lead design.
Another important result of the project was that we demonstrated broadband
injection of spin waves into magnonic crystal waveguides, tunable over a
frequency range of 0.8 GHz.
