Effect of Joule heating in current-driven domain wall motion

A. Yamaguchi; S. Nasu; H. Tanigawa; T. Ono; K. Miyake; K. Mibu; T. Shinjo

doi:10.1063/1.1847714

Effect of Joule heating in current-driven domain wall motion

A. Yamaguchi, S. Nasu, H. Tanigawa, T. Ono, K. Miyake, K. Mibu, T. Shinjo

ENG - Electronic Engineering

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

134 Citations (Scopus)

Abstract

It was found that high current density needed for the current-driven domain wall motion results in the Joule heating of the sample. The sample temperature, when the current-driven domain wall motion occurred, was estimated by measuring the sample resistance during the application of a pulsed current. The sample temperature was 750 K for the threshold current density of 6. 7× 1011 A m2 in a 10-nm-thick Ni81 Fe19 wire with a width of 240 nm on thermally oxidized silicon substrate. The temperature was raised to 830 K for the current density of 7.5× 1011 A m2, which is very close to the Curie temperature of bulk Ni81 Fe19. When the current density exceeded 7.5× 1011 A m2, an appearance of a multidomain structure in the wire was observed by magnetic force microscopy, suggesting that the sample temperature exceeded the Curie temperature.

Original language	English
Article number	012511
Pages (from-to)	012511-1-012511-3
Journal	Applied Physics Letters
Volume	86
Issue number	1
DOIs	https://doi.org/10.1063/1.1847714
Publication status	Published - 2005 Jan

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Effect of Joule heating in current-driven domain wall motion",

abstract = "It was found that high current density needed for the current-driven domain wall motion results in the Joule heating of the sample. The sample temperature, when the current-driven domain wall motion occurred, was estimated by measuring the sample resistance during the application of a pulsed current. The sample temperature was 750 K for the threshold current density of 6. 7× 1011 A m2 in a 10-nm-thick Ni81 Fe19 wire with a width of 240 nm on thermally oxidized silicon substrate. The temperature was raised to 830 K for the current density of 7.5× 1011 A m2, which is very close to the Curie temperature of bulk Ni81 Fe19. When the current density exceeded 7.5× 1011 A m2, an appearance of a multidomain structure in the wire was observed by magnetic force microscopy, suggesting that the sample temperature exceeded the Curie temperature.",

author = "A. Yamaguchi and S. Nasu and H. Tanigawa and T. Ono and K. Miyake and K. Mibu and T. Shinjo",

note = "Funding Information: The present work was partly supported by the Ministry of Education, Culture, Sports, Science and Technology of Japan through Special Coordination Funds for Promoting Science and Technology (Nanospintronics Design and Realization, NDR) and by the 21st Century COE Program by Japan Society for the Promotion of Science. ",

year = "2005",

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doi = "10.1063/1.1847714",

language = "English",

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AU - Yamaguchi, A.

AU - Nasu, S.

AU - Tanigawa, H.

AU - Ono, T.

AU - Miyake, K.

AU - Mibu, K.

AU - Shinjo, T.

N1 - Funding Information: The present work was partly supported by the Ministry of Education, Culture, Sports, Science and Technology of Japan through Special Coordination Funds for Promoting Science and Technology (Nanospintronics Design and Realization, NDR) and by the 21st Century COE Program by Japan Society for the Promotion of Science.

PY - 2005/1

Y1 - 2005/1

N2 - It was found that high current density needed for the current-driven domain wall motion results in the Joule heating of the sample. The sample temperature, when the current-driven domain wall motion occurred, was estimated by measuring the sample resistance during the application of a pulsed current. The sample temperature was 750 K for the threshold current density of 6. 7× 1011 A m2 in a 10-nm-thick Ni81 Fe19 wire with a width of 240 nm on thermally oxidized silicon substrate. The temperature was raised to 830 K for the current density of 7.5× 1011 A m2, which is very close to the Curie temperature of bulk Ni81 Fe19. When the current density exceeded 7.5× 1011 A m2, an appearance of a multidomain structure in the wire was observed by magnetic force microscopy, suggesting that the sample temperature exceeded the Curie temperature.

AB - It was found that high current density needed for the current-driven domain wall motion results in the Joule heating of the sample. The sample temperature, when the current-driven domain wall motion occurred, was estimated by measuring the sample resistance during the application of a pulsed current. The sample temperature was 750 K for the threshold current density of 6. 7× 1011 A m2 in a 10-nm-thick Ni81 Fe19 wire with a width of 240 nm on thermally oxidized silicon substrate. The temperature was raised to 830 K for the current density of 7.5× 1011 A m2, which is very close to the Curie temperature of bulk Ni81 Fe19. When the current density exceeded 7.5× 1011 A m2, an appearance of a multidomain structure in the wire was observed by magnetic force microscopy, suggesting that the sample temperature exceeded the Curie temperature.

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