Magnetism of Co1-xFex-NOL in specular spin-valves

Masaaki Doi; Masato Izumi; Hiromi Niu Fuke; Hitoshi Iwasaki; Masashi Sahashi

doi:10.1109/TMAG.2004.830407

Magnetism of Co_1-xFe_x-NOL in specular spin-valves

Masaaki Doi, Masato Izumi, Hiromi Niu Fuke, Hitoshi Iwasaki, Masashi Sahashi

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We investigated the magnetic properties of the Co_1-xFe _x-natural oxidized nano-oxide layer (NOL) in the specular spin-valve system by precise measurement of magnetization at 77 K and M-T curves after field cooling at ±5 kOe. The result suggests the antiferromagnetic component behavior of the NOL and its Néel temperature (T_N) shifts to the higher temperature with increasing Fe composition. Below the TN, the antiparallel spin configuration at the pinned layers is stabilized by the exchange bias field induced from antiferromagnetic component of NOL by the field cooling in negative field direction.

Original language	English
Pages (from-to)	2263-2265
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	40
Issue number	4 II
DOIs	https://doi.org/10.1109/TMAG.2004.830407
Publication status	Published - 2004 Jul
Externally published	Yes

Keywords

Exchange coupling
Giant magnetoresistance
Nano-oxide layer (NOL)
Specular reflection
Spin-valves

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2004.830407

Cite this

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title = "Magnetism of Co1-xFex-NOL in specular spin-valves",

abstract = "We investigated the magnetic properties of the Co1-xFe x-natural oxidized nano-oxide layer (NOL) in the specular spin-valve system by precise measurement of magnetization at 77 K and M-T curves after field cooling at ±5 kOe. The result suggests the antiferromagnetic component behavior of the NOL and its N{\'e}el temperature (TN) shifts to the higher temperature with increasing Fe composition. Below the TN, the antiparallel spin configuration at the pinned layers is stabilized by the exchange bias field induced from antiferromagnetic component of NOL by the field cooling in negative field direction.",

keywords = "Exchange coupling, Giant magnetoresistance, Nano-oxide layer (NOL), Specular reflection, Spin-valves",

author = "Masaaki Doi and Masato Izumi and Fuke, {Hiromi Niu} and Hitoshi Iwasaki and Masashi Sahashi",

year = "2004",

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T1 - Magnetism of Co1-xFex-NOL in specular spin-valves

AU - Doi, Masaaki

AU - Izumi, Masato

AU - Fuke, Hiromi Niu

AU - Iwasaki, Hitoshi

AU - Sahashi, Masashi

PY - 2004/7

Y1 - 2004/7

N2 - We investigated the magnetic properties of the Co1-xFe x-natural oxidized nano-oxide layer (NOL) in the specular spin-valve system by precise measurement of magnetization at 77 K and M-T curves after field cooling at ±5 kOe. The result suggests the antiferromagnetic component behavior of the NOL and its Néel temperature (TN) shifts to the higher temperature with increasing Fe composition. Below the TN, the antiparallel spin configuration at the pinned layers is stabilized by the exchange bias field induced from antiferromagnetic component of NOL by the field cooling in negative field direction.

AB - We investigated the magnetic properties of the Co1-xFe x-natural oxidized nano-oxide layer (NOL) in the specular spin-valve system by precise measurement of magnetization at 77 K and M-T curves after field cooling at ±5 kOe. The result suggests the antiferromagnetic component behavior of the NOL and its Néel temperature (TN) shifts to the higher temperature with increasing Fe composition. Below the TN, the antiparallel spin configuration at the pinned layers is stabilized by the exchange bias field induced from antiferromagnetic component of NOL by the field cooling in negative field direction.

KW - Exchange coupling

KW - Giant magnetoresistance

KW - Nano-oxide layer (NOL)

KW - Specular reflection

KW - Spin-valves

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