Effect of Joule heating in current-driven domain wall motion
By A. Yamaguchi, H. Tanigawa, T. Ono, S. Nasu, K. Miyake, K. Mibu, T. Shinjo. 2004
162 citations recorded by the source corpus.
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 6.7×1011A∕m2 in a 10-nm-thick Ni81Fe19 wire with a width of 240 nm on thermally oxidized silicon substrate. The temperature was raised to 830 K for the current density of 7.5×1011A∕m2, which is very close to the Curie temperature of bulk Ni81Fe19. When the current density exceeded 7.5×1011A∕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.
Subfields: Atomic and Molecular Physics, and Optics, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/aeeb5098fd93964eced227dfa36735b931f6a195
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Spin-polarised currents and magnetic domain walls (2005, result): “their permalloy nanowire as a result of the application of the pulse by measuring its resistance during the pulse and then comparing this with an extrapolation of the known R(T ) behaviour of the wire [445].”
- Microscopic approach to current-driven domain wall dynamics (2008, methodology): “For instance, a sample of Yamaguchi [41,70,71] showed jc = 1 × 10(12) A/m(2).”