2013
DOI: 10.1063/1.4792517
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Revisiting magnetic stripe domains — anisotropy gradient and stripe asymmetry

Abstract: The thickness dependent generation of magnetic stripe domains in NiFe films is investigated by in-depth magnetic domain and micromagnetic analysis, as well as complementary analysis of the microstructure by x-ray diffraction and transmission electron microscopy. A gradient of perpendicular magnetic anisotropy with film thickness is found. Micromagnetic simulations show that the anisotropy gradient results in an asymmetric stripe domain configuration. Columnar grain coarsening and texture development with thick… Show more

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Cited by 23 publications
(15 citation statements)
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“…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%
“…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%
“…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%
“…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%