{ "id": "1506.02928", "version": "v1", "published": "2015-06-09T14:24:25.000Z", "updated": "2015-06-09T14:24:25.000Z", "title": "Spin dynamics in a Curie-switch", "authors": [ "A. F. Kravets", "A. I. Tovstolytkin", "Yu. I. Dzhezherya", "D. M. Polishchuk", "I. M. Kozak", "V. Korenivski" ], "comment": "9 pages, 7 figures, 24 references", "categories": [ "cond-mat.mes-hall" ], "abstract": "Ferromagnetic resonance properties of F$_1$/f/F$_2$/AF multilayers, where weakly ferromagnetic spacer f is sandwiched between strongly ferromagnetic layers F$_1$ and F$_2$, with F$_1$ being magnetically soft and F$_2$ - magnetically hard due to exchange pinning to antiferromagnetic layer AF, are investigated. Spacer-mediated exchange coupling is shown to strongly affect the resonance fields of both F$_1$ and F$_2$ layers. Our theoretical calculations as well as measurements show that the key magnetic parameters of the spacer, which govern the ferromagnetic resonance in F$_1$/f/F$_2$/AF, are the magnetic exchange length ($\\Lambda$), effective saturation magnetization at $T=0$ $(m_0)$, and effective Curie temperature ($T_{\\text{C}}^{\\text{eff}}$). The values of these key parameters are deduced from the experimental data for multilayers with f = Ni$_x$Cu$_{100-x}$, for the key ranges in Ni-concentration ($x=54\\div70$ at. %) and spacer thickness ($d=3\\div 6$ nm). The results obtained provide a deeper insight into thermally-controlled spin precession and switching in magnetic nanostructures, with potential applications in spin-based oscillators and memory devices.", "revisions": [ { "version": "v1", "updated": "2015-06-09T14:24:25.000Z" } ], "analyses": { "keywords": [ "spin dynamics", "curie-switch", "antiferromagnetic layer af", "magnetic exchange length", "ferromagnetic resonance properties" ], "publication": { "doi": "10.1088/0953-8984/27/44/446003", "journal": "Journal of Physics Condensed Matter", "year": 2015, "month": "Nov", "volume": 27, "number": 44, "pages": 446003 }, "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015JPCM...27R6003K" } } }