Tilted media by micromagnetic simulation: A possibility for the extension of longitudinal magnetic recording?

Hee, C. H.; Zou, Yongchao; Wang, J. P.

doi:10.1063/1.1447497

Cited by 21 publications

(7 citation statements)

References 10 publications

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“…[1][2][3][4] While actual commercial applications of tilted magnetic recording media have not materialized, renewed interest in these materials has emerged for potential use in spintronic devices such as spin torque magnetoresistive random access memory ͑ST-MRAM͒ ͑Ref. 5͒ and spin torque oscillators ͑STOs͒.…”

Section: Introductionmentioning

confidence: 99%

Improved magnetoresistance through spacer thickness optimization in tilted pseudo spin valves based on L1 (111)-oriented FePtCu fixed layers

Zha

Fang

Nogués

et al. 2009

Journal of Applied Physics

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Through optimization of the Cu spacer thickness, we demonstrate magnetoresistance ͑MR͒ up to 5% in FePtCu/CoFe/Cu/CoFe/NiFe pseudo spin valves based on L1 0 ͑111͒ FePtCu fixed layers with a tilted magnetization. We find an optimum spacer thickness of about 2.4 nm which correlates with a clear onset of strong interlayer exchange coupling below 2.4 nm and spin-independent current shunting in the spacer above 2.4 nm. We argue that yet higher MR should be possible through further reduction in the interlayer exchange coupling.

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Section: Introductionmentioning

confidence: 99%

Improved magnetoresistance through spacer thickness optimization in tilted pseudo spin valves based on L1 (111)-oriented FePtCu fixed layers

Zha

Fang

Nogués

et al. 2009

Journal of Applied Physics

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“…Notice that the hard axis is also canted ( max ' 10À20 ) and that the perpendicular direction ( ¼ 0) remains metastable up to m ¼ 8À9. These results open the way to further theoretical studies of canted phases in thin films and nanostructures, which are considerably important from both fundamental and technological perspectives [14,19,32].…”

Section: Spin-reorientation Transitions In Co Films On Pd(111)mentioning

confidence: 92%

Spin-reorientation transitions in one-dimensional and two-dimensional magnetic nanostructures

Dorantes-Dávila¹,

Pastor

2005

Phase Transitions

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The magnetic anisotropy energy (MAE) of 3d transition-metal wires, stripes, and films is calculated self-consistently as a function of stripe width and film thickness. The magnetization-reorientation transitions in stripes are determined along the crossover from the mono-atomic one-dimensional chain to the twodimensional monolayer. It is shown that the MAE oscillates as a function of stripe width and depends strongly on the considered transition metal. The reorientation transitions in Co films deposited on a highly polarizable substrate such as Pd are discussed. A local analysis of the layer-resolved MAEs provides new insights into the off-plane magnetization observed in Pd-capped Co films on Pd(111). The interfaces responsible for the stability of the off-plane easy axis are characterized microscopically. An unexpected internal magnetic structure of the Co-Pd interfaces is revealed in which the magnetic moments and spin-orbit interactions at Pd atoms play a crucial role. The nature of the reorientation transition from perpendicular to in-plane magnetization with increasing film thickness is studied by means of full-vectorial calculations. The existence of a spin-canted phase at intermediate film thickness is demonstrated.

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“…The recording performance for tilted thin-film media with longitudinal ring head depends on the writing direction [10]. Track density may be limited finally for such design based on current ring type head.…”

Section: A Longitudinal Magnetic Recording Using Tilted Mediamentioning

confidence: 99%

“…For tilted hard-disk magnetic recording, there are basically a few possible configurations. A tilted magnetic recording based on micromagnetic simulation was proposed to extend the capacity of the conventional longitudinal magnetic recording [10]. The utilization of tilted media in the perpendicular recording system with a single pole head was proposed and discussed in [3], [4], [11].…”

Section: Introductionmentioning

confidence: 99%

Approaches to tilted magnetic recording for extremely high areal density

Wang

Zou²,

Hee³

et al. 2003

IEEE Trans. Magn.

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In this paper, we systematically present the fundamental understandings of advantages of tilted magnetic recording. We investigate the various configurations of tilted magnetic recording including tilted longitudinal recording, tilted perpendicular recording with tilted media and normal single pole head, and tilted perpendicular recording with perpendicular media and tilted writing head. Tilted media with easy axis along the down-track and cross-track directions and tilted media with varied in-plane orientation ratios have been investigated and compared in detail. One important finding is that slight oriented (in-plane) tilted media shows a tremendous improvement in recording performance, which may release the pressure on the fabrication of perfect tilted hard disk magnetic media. Various fabrication methods for tilted media have also been discussed.

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Tilted media by micromagnetic simulation: A possibility for the extension of longitudinal magnetic recording?

Cited by 21 publications

References 10 publications

Improved magnetoresistance through spacer thickness optimization in tilted pseudo spin valves based on L1 (111)-oriented FePtCu fixed layers

Improved magnetoresistance through spacer thickness optimization in tilted pseudo spin valves based on L1 (111)-oriented FePtCu fixed layers

Spin-reorientation transitions in one-dimensional and two-dimensional magnetic nanostructures

Approaches to tilted magnetic recording for extremely high areal density

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