We combine wideband (1-20 GHz) Corbino Disk and Dielectric Resonator (8.2 GHz) techniques to study the microwave properties in Nb/PdNi/Nb trilayers, grown by UHV dc magnetron sputtering, composed by Nb layers of nominal thickness d (S) =15 nm, and a ferromagnetic PdNi layer of thicknesses d (F) =1, 2, 8 and 9 nm. We focus on the vortex state. Magnetic fields up to H (c2) were applied. The microwave resistivity at fixed H/H (c2) increases with d (F) , eventually exceeding the Bardeen-Stephen flux-flow value. Vortex pinning is very weak at large d (F) .

Microwave Properties of Nb/PdNi/Nb Trilayers / K., Torokhtii; N., Pompeo; C., Meneghini; C., Attanasio; C., Cirillo; E. A., Ilyina; Sarti, Stefano; E., Silva. - In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM. - ISSN 1557-1939. - STAMPA. - 26:3(2013), pp. 571-574. [10.1007/s10948-012-1795-7]

Microwave Properties of Nb/PdNi/Nb Trilayers

SARTI, Stefano;
2013

Abstract

We combine wideband (1-20 GHz) Corbino Disk and Dielectric Resonator (8.2 GHz) techniques to study the microwave properties in Nb/PdNi/Nb trilayers, grown by UHV dc magnetron sputtering, composed by Nb layers of nominal thickness d (S) =15 nm, and a ferromagnetic PdNi layer of thicknesses d (F) =1, 2, 8 and 9 nm. We focus on the vortex state. Magnetic fields up to H (c2) were applied. The microwave resistivity at fixed H/H (c2) increases with d (F) , eventually exceeding the Bardeen-Stephen flux-flow value. Vortex pinning is very weak at large d (F) .
2013
corbino disk; dielectric resonator; nb; s/f hybrids; vortex dynamics
01 Pubblicazione su rivista::01a Articolo in rivista
Microwave Properties of Nb/PdNi/Nb Trilayers / K., Torokhtii; N., Pompeo; C., Meneghini; C., Attanasio; C., Cirillo; E. A., Ilyina; Sarti, Stefano; E., Silva. - In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM. - ISSN 1557-1939. - STAMPA. - 26:3(2013), pp. 571-574. [10.1007/s10948-012-1795-7]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/506879
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