Effective Switching Field Distribution Evaluation Using Saturation Field in Minor Loop

Hinata, Shintaro; Saito, Shin; Itagaki, N.; Takahashi, M.

doi:10.1109/tmag.2012.2187129

Cited by 3 publications

(1 citation statement)

References 15 publications

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“…It was found in earlier works that SFD is inversely correlated with the lateral dimensions of the nanostructures in an array 1,2 but increases as the areal density increases. 3 While significant progress has been made to uncover the intrinsic SFD (i.e., free of dipolar interaction) [3][4][5] and a systematic evaluation of SFD from the combined effects of array element size and pitch was performed for NiFe, 6 such treatment had been sparse for perpendicular materials.…”

Section: Introductionmentioning

confidence: 99%

Angular dependence of switching field distribution in (Co/Pd)n multilayer nanostructure arrays

Lau

Liu

2012

Journal of Applied Physics

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The characterization of switching field and its angular dependence has been tremendously useful in understanding the switching mechanisms in magnetic thin-films and patterned structures. However, the study of the distribution in switching fields (SFD) in arrays and its angular dependence is less common. In this work, we investigate this dependency in arrays of ðCo=PdÞ n multilayer nanostructures. Results from arrays with different element sizes and periodicities (pitches) are presented, and we found that, like the switching field, the SFD varies with applied field angle in a Stoner-Wohlfarth-like fashion. Furthermore, when the SFD is represented as a dependent variable of the switching field, we consistently found a linear relationship between the two, and that the slope depends on both array element size and pitch. In general, the SFD in arrays with the largest structures and the smallest pitch tends to have the strongest dependence on the switching field. For arrays with nanostructures of a fixed size, however, we found that SFD values are virtually identical, regardless of pitch, if the reversal field is applied near 45 with respect to the surface normal. That the minimum SFD depends only on the size of the elements and not the pitch has significant implications for the practical design of densely-packed magnetic nanostructure arrays. [http://dx.

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Section: Introductionmentioning

confidence: 99%

Angular dependence of switching field distribution in (Co/Pd)n multilayer nanostructure arrays

Lau

Liu

2012

Journal of Applied Physics

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Quantification of intergranular exchange coupling in CoPtCr-based perpendicular recording media via ferromagnetic resonance measurements

Richardson

Srinivasan

Katz

et al. 2017

Applied Physics Letters

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Intergranular exchange fields in CoPtCr granular media materials were quantified through ferromagnetic resonance measurements in various magnetic states. The data indicate that the exchange field in CoPtCr granular films with no oxide segregant is comparable to the saturation magnetization of the films. With an introduction of a SiO2 segregant, however, the exchange field decreases. A 30% volume fraction of the segregant reduces the strength of the intergranular exchange coupling to zero.

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Magnetic Characterization of Perpendicular Recording Media

Makarov¹,

Krone²,

Albrecht³

2016

Ultra-High-Density Magnetic Recording

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Effective Switching Field Distribution Evaluation Using Saturation Field in Minor Loop

Cited by 3 publications

References 15 publications

Angular dependence of switching field distribution in (Co/Pd)n multilayer nanostructure arrays

Angular dependence of switching field distribution in (Co/Pd)n multilayer nanostructure arrays

Quantification of intergranular exchange coupling in CoPtCr-based perpendicular recording media via ferromagnetic resonance measurements

Magnetic Characterization of Perpendicular Recording Media

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