مرکز منطقه ای اطلاع رساني علوم و فناوري - High Bulk Spin Scattering Asymmetry in CPP Spin Valves With Alternated Monatomic <formula formulatype="inline"> <img src="/images/tex/19172.gif" alt="[\\hbox {Fe/Co}]

DocumentCode :

1449602

Title :

High Bulk Spin Scattering Asymmetry in CPP Spin Valves With Alternated Monatomic $[\\hbox {Fe/Co}]_{\\rm n}$ Superlattice

Author :

Mano, Tomonori ; Chu, In Chang ; Miyake, Kousaku ; Doi, Masaaki ; Kuwano, Satoko ; Shima, Toshiyuki ; Sahashi, Masashi

Author_Institution :

Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan

Volume :

Issue :

fYear :

2009

Firstpage :

3460

Lastpage :

3463

Abstract :

We confirmed the structural properties of trilayered epitaxial films with AML [Fe/Co]_n and Au spacer on Au electrode by RHEED and TEM. A considerably large DeltaRA (2.61 mOmegamum²) resistance area product was observed in all metallic current perpendicular-to-plane giant magneto-resistance (CPP-GMR) spin-valve elements by using alternate monatomic epitaxial [Fe/Co]_n ferromagnetic layer with IrMn layer on the top. The estimated spin scattering asymmetry coefficient beta and interface asymmetry coefficient gamma was 0.81 and 0.43 plusmn 0.05, respectively. This value of beta is higher than that of Fe₅₀Co₅₀/Cu laminated with Cu spacer or Heusler alloy which is largest value ever reported at room temperature.

Keywords :

cobalt; electrodes; ferromagnetic materials; giant magnetoresistance; gold; iridium alloys; iron; magnetic epitaxial layers; magnetic multilayers; manganese alloys; reflection high energy electron diffraction; spin valves; transmission electron microscopy; Heusler alloy; RHEED; TEM; [Fe-Co]_n-IrMn-Au; alternate monatomic epitaxial ferromagnetic layer; gold electrode; high bulk spin scattering asymmetry; interface asymmetry coefficient; metallic current perpendicular-plane giant magnetoresistance spin-valves; monatomic superlattice; room temperature; spin scattering asymmetry coefficient; temperature 293 K to 298 K; trilayered epitaxial film structural properties; Alternate monatomic layer; epitaxial superlattice; giant magnetoresistance; spin scattering asymmetry; spin-valves;

fLanguage :

English

Journal_Title :

Magnetics, IEEE Transactions on

Publisher :

ieee

ISSN :

0018-9464

Type :

jour

DOI :

10.1109/TMAG.2009.2022022

Filename :

5257071

Link To Document :

https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=1449602