Microstructural evolution in PtMn-based spin-valves induced by heat treatment

Hyuck Soo Yang; K. I. Min; Young Keun Kim; Seong Rae Lee; Gyeong Su Park; Se Ahn Song

doi:10.1016/S0304-8853(00)00765-4

Microstructural evolution in PtMn-based spin-valves induced by heat treatment

Hyuck Soo Yang, K. I. Min, Young Keun Kim, Seong Rae Lee, Gyeong Su Park, Se Ahn Song

Department of Materials Science and Engineering

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

2 Citations (Scopus)

Abstract

Annealing time effect on the magnetotransport properties was investigated for Si/alumina/Ta/NiFe/CoFe/Cu/ CoFe/PtMn/Ta samples having different PtMn thickness (10-30 nm). Post-deposition heat treatment was performed using a vacuum furnace with 3 kOe field at 270°C up to 35 h. The thermally activated atoms diffused, to other layers through grain boundaries during the heat treatment with longer annealing hours resulting in deteriorating ΔR/R. This effect is more profound in films with thicker PtMn layers where interface became rougher after annealing.

Original language	English
Pages (from-to)	2070-2072
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	226-230
Issue number	PART II
DOIs	https://doi.org/10.1016/S0304-8853(00)00765-4
Publication status	Published - 2001

Keywords

Annealing
Giant magnetoresistance
Microstructure
Spin value

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Microstructural evolution in PtMn-based spin-valves induced by heat treatment",

abstract = "Annealing time effect on the magnetotransport properties was investigated for Si/alumina/Ta/NiFe/CoFe/Cu/ CoFe/PtMn/Ta samples having different PtMn thickness (10-30 nm). Post-deposition heat treatment was performed using a vacuum furnace with 3 kOe field at 270°C up to 35 h. The thermally activated atoms diffused, to other layers through grain boundaries during the heat treatment with longer annealing hours resulting in deteriorating ΔR/R. This effect is more profound in films with thicker PtMn layers where interface became rougher after annealing.",

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T1 - Microstructural evolution in PtMn-based spin-valves induced by heat treatment

AU - Yang, Hyuck Soo

AU - Min, K. I.

AU - Kim, Young Keun

AU - Lee, Seong Rae

AU - Park, Gyeong Su

AU - Song, Se Ahn

PY - 2001

Y1 - 2001

N2 - Annealing time effect on the magnetotransport properties was investigated for Si/alumina/Ta/NiFe/CoFe/Cu/ CoFe/PtMn/Ta samples having different PtMn thickness (10-30 nm). Post-deposition heat treatment was performed using a vacuum furnace with 3 kOe field at 270°C up to 35 h. The thermally activated atoms diffused, to other layers through grain boundaries during the heat treatment with longer annealing hours resulting in deteriorating ΔR/R. This effect is more profound in films with thicker PtMn layers where interface became rougher after annealing.

AB - Annealing time effect on the magnetotransport properties was investigated for Si/alumina/Ta/NiFe/CoFe/Cu/ CoFe/PtMn/Ta samples having different PtMn thickness (10-30 nm). Post-deposition heat treatment was performed using a vacuum furnace with 3 kOe field at 270°C up to 35 h. The thermally activated atoms diffused, to other layers through grain boundaries during the heat treatment with longer annealing hours resulting in deteriorating ΔR/R. This effect is more profound in films with thicker PtMn layers where interface became rougher after annealing.

KW - Annealing

KW - Giant magnetoresistance

KW - Microstructure

KW - Spin value

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