High domain wall magneto-resistance in amorphous TbFeCo wires

Li, Songtian; Amagai, Taro; Liu, Xiaoxi; Morisako, Akimitsu

doi:10.1063/1.3641428

Cited by 8 publications

(5 citation statements)

References 22 publications

(24 reference statements)

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“…Nonetheless, the occurrence of MR peaks at H C confirmed the strong size dependence of coercivity in amorphous TbFeCo. On the other hand, the MR ratios (defined as (R(H ) − R(0)) / R(0) ×100% ) for 500 μm and 50 μm were similar, 1.4 % and 1.6 % respectively, which was likely due to the similar densities of magnetic domains as previous reported 10 .…”

Section: Resultssupporting

confidence: 78%

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Strain-induced enhancement of coercivity in amorphous TbFeCo films

Anuniwat

Poon

et al. 2013

Journal of Applied Physics

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We report a strong size dependence of coercivity in amorphous ferrimagnetic TbFeCo films. The as-deposited film exhibited a low saturation magnetization (Ms=100 emu/cc) and a high perpendicular anisotropy (Ku=10^6 erg/cc). Hall-bar devices were fabricated for characterizing the magneto-transport behaviors. A significant increase in coercivity (up to 300 %) was observed at room temperature as the width of Hall bar was reduced. The large coercivity enhancement was attributed to the relaxation of film stress. The effect of strain and dimensionality on the coercivity in TbFeCo makes it attractive for tunable coercivity and the magnetization reversal in future nanoscale devices.Comment: 17 pages, 3 figure

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Section: Resultssupporting

confidence: 78%

“…On the other hand, the MR ratios (defined as RðHÞÀRð0Þ Rð0Þ Â 100%) for 500 lm and 50 lm were similar, 1.4% and 1.6%, respectively, which was likely due to the similar densities of magnetic domains as previous reported. 12 Additional study on the effect of the film thickness was also performed. Fig.…”

Section: Methodsmentioning

confidence: 99%

Strain-induced enhancement of coercivity in amorphous TbFeCo films

Anuniwat

Poon

et al. 2013

Journal of Applied Physics

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“…The QED vacuum effects at the interfaces between regions of different n, like the creation of evanescent waves, have also been studied in [145].…”

Section: Intensity Dependent Refractive Indexmentioning

confidence: 99%

Magnetic and electric properties of a quantum vacuum

Battesti¹,

Rizzo²

2012

Rep. Prog. Phys.

152

166

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In this report we show that a vacuum is a nonlinear optical medium and discuss what the optical phenomena are that should exist in the framework of the standard model of particle physics. We pay special attention to the low energy limit. The predicted effects for photons of energy smaller than the electron rest mass are of such a level that none have yet been observed experimentally. Progress in field sources and related techniques seem to indicate that in a few years vacuum nonlinear optics will be accessible to human investigation.

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“…Reported values for the high moment FeCo exchange length are between 20-30 nm. 18,26 We have estimated the grain size from the XRD data, finding very similar data for all samples (12-14 nm for DC films and 12-20 nm for PDC films). These grain sizes cannot explain the observed magnetic behavior.…”

Section: Resultsmentioning

confidence: 74%