Anomalous Hall-effect measurement study on Co/Pt nanosized dot

N. Kikuchi; R. Murillo Vallejo; J.C. Lodder

doi:10.1063/1.1859971

Anomalous Hall-effect measurement study on Co/Pt nanosized dot

N. Kikuchi, R. Murillo Vallejo, J.C. Lodder

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Abstract

Dot arrays made of polycrystalline Co/Pt multilayer with an average grain size of 20 nm are fabricated by using a laser interference lithography and their magnetic properties are examined by detecting anomalous Hall effect. It is revealed that the ratio of dots which have stable single domain state increases from 35% to 85% while the dot diameter decreased from 200 to 120 nm. The energy barrier height of magnetization reversal is estimated as 4.0 10^-12 erg from sweep rate dependence of the coercivity. The energy corresponds to the switching volume comparable with the volume of a physical grain in the multilayer film.

Original language	English
Article number	10J713
Number of pages	3
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1859971
Publication status	Published - 2005

Keywords

TSTNE-Magnet-AHE: Anomalous Hall Effect
SMI-TST: From 2006 in EWI-TST
SMI-EXP: EXPERIMENTAL TECHNIQUES
TST-LIL: Laser Interference Lithography

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title = "Anomalous Hall-effect measurement study on Co/Pt nanosized dot",

abstract = "Dot arrays made of polycrystalline Co/Pt multilayer with an average grain size of 20 nm are fabricated by using a laser interference lithography and their magnetic properties are examined by detecting anomalous Hall effect. It is revealed that the ratio of dots which have stable single domain state increases from 35% to 85% while the dot diameter decreased from 200 to 120 nm. The energy barrier height of magnetization reversal is estimated as 4.0 10-12 erg from sweep rate dependence of the coercivity. The energy corresponds to the switching volume comparable with the volume of a physical grain in the multilayer film.",

keywords = "TSTNE-Magnet-AHE: Anomalous Hall Effect, SMI-TST: From 2006 in EWI-TST, SMI-EXP: EXPERIMENTAL TECHNIQUES, TST-LIL: Laser Interference Lithography",

author = "N. Kikuchi and {Murillo Vallejo}, R. and J.C. Lodder",

year = "2005",

doi = "10.1063/1.1859971",

language = "English",

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journal = "Journal of Applied Physics",

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AU - Kikuchi, N.

AU - Murillo Vallejo, R.

AU - Lodder, J.C.

PY - 2005

Y1 - 2005

N2 - Dot arrays made of polycrystalline Co/Pt multilayer with an average grain size of 20 nm are fabricated by using a laser interference lithography and their magnetic properties are examined by detecting anomalous Hall effect. It is revealed that the ratio of dots which have stable single domain state increases from 35% to 85% while the dot diameter decreased from 200 to 120 nm. The energy barrier height of magnetization reversal is estimated as 4.0 10-12 erg from sweep rate dependence of the coercivity. The energy corresponds to the switching volume comparable with the volume of a physical grain in the multilayer film.

AB - Dot arrays made of polycrystalline Co/Pt multilayer with an average grain size of 20 nm are fabricated by using a laser interference lithography and their magnetic properties are examined by detecting anomalous Hall effect. It is revealed that the ratio of dots which have stable single domain state increases from 35% to 85% while the dot diameter decreased from 200 to 120 nm. The energy barrier height of magnetization reversal is estimated as 4.0 10-12 erg from sweep rate dependence of the coercivity. The energy corresponds to the switching volume comparable with the volume of a physical grain in the multilayer film.

KW - TSTNE-Magnet-AHE: Anomalous Hall Effect

KW - SMI-TST: From 2006 in EWI-TST

KW - SMI-EXP: EXPERIMENTAL TECHNIQUES

KW - TST-LIL: Laser Interference Lithography

U2 - 10.1063/1.1859971

DO - 10.1063/1.1859971

M3 - Article

VL - 97

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 10

M1 - 10J713

ER -

Anomalous Hall-effect measurement study on Co/Pt nanosized dot

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Keywords

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