Revisiting magnetic stripe domains — anisotropy gradient and stripe asymmetry

McCord, Jeffrey; Erkartal, Burak; Hofe, Thomas von; Kienle, Lorenz; Quandt, Eckhard; Roshchupkina, Olga; Grenzer, J.

doi:10.1063/1.4792517

Cited by 23 publications

(15 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Stripe domains in thin films have been observed since many decades in Ni-and Co-based systems [1][2][3][4][5], and later in a variety of thin films, including amorphous or nanocrystalline alloys [6][7][8][9][10][11], highly magnetostrictive alloys [12,13], and multilayers [14,15], and even in amorphous ribbons and bulk systems [16][17][18]. Their relatively weak perpendicular anisotropy is comparable to the shape anisotropy, and results in stripe domains whose magnetisation is tilted off the sample plane, therefore having both an in-plane and an out-of-plane component [11,19], with the possible presence of closure domains [20]. Together with a characteristic inplane hysteresis loop shape, often called "transcritical" [3,7], these films typically display a "rotatable anisotropy" [2,12,13,21,22], i.e.…”

Section: Introductionmentioning

confidence: 99%

Rotatable magnetic anisotropy in Fe78Si9B13 thin films displaying stripe domains

Coı̈sson

Barrera

Celegato

et al. 2019

Applied Surface Science

View full text Add to dashboard Cite

Fe 78 Si 9 B 13 thin films having a controlled weak perpendicular anisotropy resulting in dense stripe domain configuration have been prepared to investigate their rotatable anisotropy properties. Vector vibrating sample magnetometry, an innovative field-dependent magnetic force microscopy, and ferromagnetic resonance techniques have been jointly exploited to correlate the perpendicular anisotropy to the threshold field value that must be overcome to induce the stripes realignment. A linear relationship between these two quantities is found. The presence of the threshold field is attributed to the portions of the samples whose magnetisation must flip its perpendicular component during a rotation process, therefore encountering the energy barrier of the perpendicular anisotropy.

show abstract

Section: Introductionmentioning

confidence: 99%

Rotatable magnetic anisotropy in Fe78Si9B13 thin films displaying stripe domains

Coı̈sson

Barrera

Celegato

et al. 2019

Applied Surface Science

View full text Add to dashboard Cite

show abstract

“…On the other hand, the perpendicular anisotropy that leads to the stripe type domain structure is much smaller, ~ 10 4_ 10 5 J/m 3 . For example, the reported perpendicular anisotropy is about 9.5 kJ/m 3 for NiFe films [18], and 11.3 kJ/m 3 for FeCoNbB amorphous film [19], where stripe domain structure appears above several hundred nanometers. Therefore, the magnetic moments in our SMTFs are completely compelled to lie within the film plane by the strong effective out-of-plane anisotropy field.…”

mentioning

confidence: 99%

Micrometer thick soft magnetic films with magnetic moments restricted strictly in plane by negative magnetocrystalline anisotropy

Jiao

et al. 2017

Journal of Magnetism and Magnetic Materials

View full text Add to dashboard Cite

Stripe domains or any other type domain structures with part of their magnetic moments deviating from the film plane, which usually occur above a certain film thickness, are known problems that limit their potential applications for soft magnetic thin films (SMTFs). In this work, we report the growth of micrometer thick c-axis oriented hcp-Co84Ir16SMTFs with their magnetic moments restricted strictly in plane by negative magnetocrystalline anisotropy. Extensive characterizations have been performed on these films, which show that they exhibit very good soft magnetic properties even for our micrometer thick films. Moreover, the anisotropy properties and high-frequency properties were thoroughly investigated and our results show very promising properties of these SMTFs for future applications.

show abstract

“…A large variety of materials are shown to develop WSs and the conclusions of our study could be extended to those materials such as Co-Gd [5], Fe-Pt [6], (Fe, Co)AlON [7], Fe-Zr-N [8], Fe 80 Ga 20 [9], (Fe, Si)B [10,11], and Fe-Ni [12][13][14]. Depending on the material's properties, film composition [12][13][14], and deposition conditions [2,3,15,16], the critical thickness leading to WS appearance varies from 20 nm for epitaxial Co [17] and 100 nm for (Fe, Ta)C [18] to 355 nm for Ni 82 Fe 18 [14]. WSs are also observed in amorphous (Co, Fe)B films [16,19,20].…”

Section: Introductionmentioning

confidence: 74%

Weak Stripe Angle Determination by Quantitative x-ray Magnetic Microscopy

et al. 2020

View full text Add to dashboard Cite

High-resolution scanning transmission x-ray microscopy (STXM) can provide quantitative access to local magnetization canting angles relative to the surface. We use this cutting-edge microscopy technique to probe the weak stripe magnetic texture hosted by a 180-nm-thick Co 40 Fe 40 B 20 layer. We report a full set of measurements of the weak stripe canting angle, as well as a method that uses only a single-impingingdirection x-ray beam to extract the angle. This method also allows the spatial profile to be extracted with 30 nm resolution, and the canting angle versus applied field can be measured. Combining these information, the macroscopic magnetization versus applied field loop on a complex spin texture can be reconstructed in an unprecedented way and shows undoubtedly that flux closure domains exist. These results show that the presence of flux closure domains, at the surface of such a thick film, is difficult to demonstrate by means of the STXM technique. Beyond the characterization of the weak stripe angle, this quantitative x-ray magnetic microscopy can be used to study the local textures hosted in all materials exhibiting some circular x-ray magnetic dichroism.

show abstract

Revisiting magnetic stripe domains — anisotropy gradient and stripe asymmetry

Cited by 23 publications

References 23 publications

Rotatable magnetic anisotropy in Fe78Si9B13 thin films displaying stripe domains

Rotatable magnetic anisotropy in Fe78Si9B13 thin films displaying stripe domains

Micrometer thick soft magnetic films with magnetic moments restricted strictly in plane by negative magnetocrystalline anisotropy

Weak Stripe Angle Determination by Quantitative x-ray Magnetic Microscopy

Contact Info

Product

Resources

About