Szczegóły publikacji
Opis bibliograficzny
Tuning of MgO barrier magnetic tunnel junction bias current for picotesla magnetic field detection / R. Ferreira, P. WIŚNIOIWSKI, P. P. Freitas, J. Langer, B. Ocker, W. Maass // Journal of Applied Physics ; ISSN 0021-8979 . — 2006 — vol. 99 iss. 8, s. 08K706-1–08K706-3. — Bibliogr. s. 08K706-3. — Brak afiliacji AGH
Autorzy (6)
- Ferreira R.
- Wiśniowski Piotr
- Freitas Paulo P.
- Langer Jürgen
- Ocker Berthold
- Maass Wolfram
Dane bibliometryczne
| ID BaDAP | 42669 |
|---|---|
| Data dodania do BaDAP | 2009-01-19 |
| Tekst źródłowy | URL |
| DOI | 10.1063/1.2173636 |
| Rok publikacji | 2006 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Applied Physics |
Abstract
Abstract Two sets of low resistance MgO junctions were patterned into junctions with areas from 1 to 24 mu m(2). By properly choosing the operating conditions the background noise can be placed at the level of equivalent fields of similar to 10(-11) and similar to 10(-12) T/Hz(0.5) calculated for 30 Oe linear range junctions of types 1 (150 Omega mu m(2), tunnel magnetoresistance (TMR)=150%) and 2 (30 Omega mu m(2), TMR=100%), respectively. Such room temperature sensitivities can only be achieved at frequencies where the 1/f noise contribution is negligible. From the 1/f noise Hooge constant (alpha(H)=2.66x10(-9) mu m(2) at RxA similar to 150 Omega mu m(2) and alpha(H)=1.24x10(-9) mu m(2) at RxA similar to 30 Omega mu m(2)) the 1/f noise corner in the optimum biasing conditions is predicted to be located between 10 and 70 MHz, depending on junction area and resistance. (C) 2006 American Institute of Physics.
