Effects of Nb buffer layer on superconducting and magnetic behavior of IrMn/NiFe/Nb/NiFe spin-valves

Hernandez, U.D. Chacón; Sousa, Maria Alice Montes de; Litterst, F. J.; Nascimento, V.P.; Baggio-Saitovitch, E.

doi:10.1016/j.jmmm.2015.04.094

Cited by 9 publications

(1 citation statement)

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“…Most of the previous works dealt with transport measurements of S/F structures and only a few [2,24,26,27] investigated magnetic properties of the superconductor under the influence of the ferromagnet. Indeed, as recent experiments suggest the magnetic properties of F/S/F spin valve structures may strongly be affected by proximity effect leading to strong variations of the superconductor's magnetization [24].…”

Section: Introductionmentioning

confidence: 99%

Sudden magnetization drops in superconductor/ferromagnet bilayered structures

Patiño

Blamire

2018

Supercond. Sci. Technol.

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We report in plane magnetization measurements on Nb/Co bilayers using a thin superconductor Nb∼ 25 nm and a thick ferromagnet Co∼ 40 − 55 nm where Bloch Domain Walls (BDW) are energetically favorable. Here sharp drops in the magnetization are explained as direct consequence of BDW stray fields that induce vortices in the out of plane direction. These are generated at small fields around the coercive field of the ferromagnet and removed at large fields of the order of Hc2. These two well distinctive magnetic states of the superconductor, with or without out of plane vortices, is the same mechanism used to explain the drops in critical currents reported in [E.

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