Pressure-enhanced giant magnetoresistance in Fe/Cr magnetic multilayers

Gendo Oomi; Shuhei Higashihara; Kazufumi Suenaga; Kesami Saito; Koki Takanashi; Seiji Mitani

doi:10.3938/jkps.62.1929

Pressure-enhanced giant magnetoresistance in Fe/Cr magnetic multilayers

Gendo Oomi, Shuhei Higashihara, Kazufumi Suenaga, Kesami Saito, Koki Takanashi, Seiji Mitani

Materials Development Division

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

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Abstract

The magnetoresistance of Fe/Cr magnetic multilayers (MMLs) on the 1^st and the 2^nd peaks has been measured at high pressure up to 3 GPa at low temperature in order to make clear the characteristics of the giant magnetoresistance (GMR) under high pressure. The GMRs of the MMLs on the 2^nd peak are found to be enhanced strongly by applying pressure whereas those of 1^st peak MMLs decrease with increasing pressure. The magnitude of GMR of the 2^nd peak MMLs becomes about twice or more at 2 GPa compared with the value at ambient pressure. The large difference in the pressure dependences is explained by assuming a pressure-induced crossover in the interlayer exchange coupling from the biquadratic to the bilinear spin arrangements.

Original language	English
Pages (from-to)	1929-1932
Number of pages	4
Journal	Journal of the Korean Physical Society
Volume	62
Issue number	12
DOIs	https://doi.org/10.3938/jkps.62.1929
Publication status	Published - 2013 Jul 1

Keywords

Crossover
Electrical resistance
Giant magnetoresistance
High pressure

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3938/jkps.62.1929

Cite this

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title = "Pressure-enhanced giant magnetoresistance in Fe/Cr magnetic multilayers",

abstract = "The magnetoresistance of Fe/Cr magnetic multilayers (MMLs) on the 1st and the 2nd peaks has been measured at high pressure up to 3 GPa at low temperature in order to make clear the characteristics of the giant magnetoresistance (GMR) under high pressure. The GMRs of the MMLs on the 2nd peak are found to be enhanced strongly by applying pressure whereas those of 1st peak MMLs decrease with increasing pressure. The magnitude of GMR of the 2nd peak MMLs becomes about twice or more at 2 GPa compared with the value at ambient pressure. The large difference in the pressure dependences is explained by assuming a pressure-induced crossover in the interlayer exchange coupling from the biquadratic to the bilinear spin arrangements.",

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T1 - Pressure-enhanced giant magnetoresistance in Fe/Cr magnetic multilayers

AU - Oomi, Gendo

AU - Higashihara, Shuhei

AU - Suenaga, Kazufumi

AU - Saito, Kesami

AU - Takanashi, Koki

AU - Mitani, Seiji

PY - 2013/7/1

Y1 - 2013/7/1

N2 - The magnetoresistance of Fe/Cr magnetic multilayers (MMLs) on the 1st and the 2nd peaks has been measured at high pressure up to 3 GPa at low temperature in order to make clear the characteristics of the giant magnetoresistance (GMR) under high pressure. The GMRs of the MMLs on the 2nd peak are found to be enhanced strongly by applying pressure whereas those of 1st peak MMLs decrease with increasing pressure. The magnitude of GMR of the 2nd peak MMLs becomes about twice or more at 2 GPa compared with the value at ambient pressure. The large difference in the pressure dependences is explained by assuming a pressure-induced crossover in the interlayer exchange coupling from the biquadratic to the bilinear spin arrangements.

AB - The magnetoresistance of Fe/Cr magnetic multilayers (MMLs) on the 1st and the 2nd peaks has been measured at high pressure up to 3 GPa at low temperature in order to make clear the characteristics of the giant magnetoresistance (GMR) under high pressure. The GMRs of the MMLs on the 2nd peak are found to be enhanced strongly by applying pressure whereas those of 1st peak MMLs decrease with increasing pressure. The magnitude of GMR of the 2nd peak MMLs becomes about twice or more at 2 GPa compared with the value at ambient pressure. The large difference in the pressure dependences is explained by assuming a pressure-induced crossover in the interlayer exchange coupling from the biquadratic to the bilinear spin arrangements.

KW - Crossover

KW - Electrical resistance

KW - Giant magnetoresistance

KW - High pressure

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JO - Journal of the Korean Physical Society

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Pressure-enhanced giant magnetoresistance in Fe/Cr magnetic multilayers

Abstract

Keywords

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