Improvement in both giant magnetoresistance and exchange bias through hydrogen ion irradiation at low energy

Jaechul Shim, Yoonsung Han, Jinwon Lee, Jongill Hong

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Irradiation of IrMn-based spin valves with 550 eV hydrogen ions increased their giant magnetoresistance and exchange bias by 20% and 60%, respectively. This significant enhancement stems from the strong (111) texture and small mosaic spread of the IrMn antiferromagnet that resulted from the microstructural reconstruction caused by the energy transfer during the bombardment by hydrogen ions, as well as by the narrow dispersion in the exchange bias. Irradiation with the hydrogen ion at low energy can improve the properties of spin valves without resulting in undue degradation in the performance or the microstructure.

Original languageEnglish
Article number053115
JournalJournal of Applied Physics
Volume104
Issue number5
DOIs
Publication statusPublished - 2008 Sep 22

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hydrogen ions
ion irradiation
irradiation
stems
energy
bombardment
textures
energy transfer
degradation
microstructure
augmentation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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abstract = "Irradiation of IrMn-based spin valves with 550 eV hydrogen ions increased their giant magnetoresistance and exchange bias by 20{\%} and 60{\%}, respectively. This significant enhancement stems from the strong (111) texture and small mosaic spread of the IrMn antiferromagnet that resulted from the microstructural reconstruction caused by the energy transfer during the bombardment by hydrogen ions, as well as by the narrow dispersion in the exchange bias. Irradiation with the hydrogen ion at low energy can improve the properties of spin valves without resulting in undue degradation in the performance or the microstructure.",
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Improvement in both giant magnetoresistance and exchange bias through hydrogen ion irradiation at low energy. / Shim, Jaechul; Han, Yoonsung; Lee, Jinwon; Hong, Jongill.

In: Journal of Applied Physics, Vol. 104, No. 5, 053115, 22.09.2008.

Research output: Contribution to journalArticle

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