In:
Applied Physics Letters, AIP Publishing, Vol. 115, No. 12 ( 2019-09-16)
Abstract:
We report ultralow intrinsic magnetic damping in Co25Fe75 heterostructures, reaching the low 10−4 regime at room temperature. By using a broadband ferromagnetic resonance technique in out-of-plane geometry, we extracted the dynamic magnetic properties of several Co25Fe75-based heterostructures with varying ferromagnetic layer thicknesses. By measuring radiative damping and spin pumping effects, we found the intrinsic damping of a 26 nm thick sample to be α0≲3.18×10−4. Furthermore, using Brillouin light scattering microscopy, we measured spin-wave propagation lengths of up to (21 ± 1) μm in a 26 nm thick Co25Fe75 heterostructure at room temperature, which is in excellent agreement with the measured damping.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2019
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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