Spin Transfer Switching and Interlayer Coupling in CPP-GMR Structures with GdFeCo Free Layer
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- Kozawa Tomohiro
- Graduate School of Engineering, Nagoya University
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- Kato Takeshi
- Graduate School of Engineering, Nagoya University
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- Iwata Satoshi
- Graduate School of Engineering, Nagoya University
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- Tsunashima Shigeru
- Graduate School of Engineering, Nagoya University
Bibliographic Information
- Other Title
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- GdFeCoフリー層を用いたCPP-GMR素子におけるスピン注入磁化反転と層間結合
- GdFeCo フリーソウ オ モチイタ CPP GMR ソシ ニ オケル スピン チュウニュウ ジカ ハンテン ト ソウ カン ケツゴウ
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Abstract
The spin transfer switching in the TbCoFe / CoFeB / Cu / GdFeCo current perpendicular to plane (CPP) giant magnetoresistance (GMR) structures were studied. The GMR junction exhibited 0.1 % MR ratio, and current induced magnetization switching of the GdFeCo free layer was confirmed by a 100 msec pulse current. The difference of the critical current density between Jc+ (anti-parallel (AP) to parallel (P)) and Jc- (P to AP) was estimated to be 15.3 × 107 A/cm2, and thus the average current density to be 7.7 × 107 A/cm2. It was confirmed that the sign of the interlayer coupling between GdFeCo and TbCoFe / CoFeB depended on the relative direction of the transition metal (TM) - moments of GdFeCo free layer and TbCoFe / CoFeB pin layer, which means the coupling is dominated by the exchange coupling through Cu spacer.
Journal
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- IEEJ Transactions on Fundamentals and Materials
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IEEJ Transactions on Fundamentals and Materials 130 (7), 631-635, 2010
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204599418624
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- NII Article ID
- 10026865163
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- NII Book ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL BIB ID
- 10740738
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed