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Hybrid Memory Layer With Low Curie Temperature CoPd/Pd Multilayer for High-Density Magnetic Random-Access Memory Cells

http://hdl.handle.net/2237/00029274

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	INTERMAG (546.2 kB)

item type

学術雑誌論文 / Journal Article(1)

公開日

2019-02-12

タイトル

Hybrid Memory Layer With Low Curie Temperature CoPd/Pd Multilayer for High-Density Magnetic Random-Access Memory Cells

著者

Zhao, W.
Dong, X.
Kimura, T.
Kato, T.
Oshima, D.
Sonobe, Y.
Kawato, Y.
Iwata, S.

権利

権利情報

“© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.”

キーワード

主題Scheme

Other

主題

Co based multilayer

キーワード

主題Scheme

Other

主題

Curie temperature

キーワード

主題Scheme

Other

主題

exchange coupling

キーワード

主題Scheme

Other

主題

MRAM

抄録

内容記述タイプ

Abstract

内容記述

We investigated switching behavior of the hybrid structures consisting of low Curie temperature (TC) and high TC layers. The TC of [Co (0.3 nm)/Pd (1.2 nm)]6 and [Co54Pd46 (0.3 nm)/Pd (1.2 nm)]6 multilayers (MLs) were confirmed to have much higher than 200 °C and around 110 °C, respectively. In the bi-ML hybrid structure with Co/Pd and CoPd/Pd MLs, the two MLs are exchange-coupled at room temperature, and the CoPd/Pd ML was switched following the magnetization of the high T Co/Pd ML at high temperature (~170 °C) at which the CoPd/Pd ML becomes paramagnetic. The tri-layered hybrid structure with a stack of [Co (0.4 nm)/Pt (1.2 nm)]6/[Co48Pd52 (0.3 nm)/Pd (1.2 nm)]3/[Co (0.4 nm)/Pd (1.2 nm)]3 was also investigated. The tri-ML stack showed one-step hysteresis loop at room temperature and two-step loop at higher than 120 °C due to the loss of magnetic order of the intermediate low TC CoPd/Pd ML. From the data of tri-ML stack, the exchange coupled and decoupled situations between Co/Pt and Co/Pd MLs were found to be realized by changing the temperature from room temperature to around 150 °C.

出版者

IEEE

言語

eng

資源タイプ

資源

http://purl.org/coar/resource_type/c_6501

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journal article

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2021-03-01 10:44:59.876161

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Hybrid Memory Layer With Low Curie Temperature CoPd/Pd Multilayer for High-Density Magnetic Random-Access Memory Cells

× Zhao, W.

× Dong, X.

× Kimura, T.

× Kato, T.

× Oshima, D.

× Sonobe, Y.

× Kawato, Y.

× Iwata, S.

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