Direct-current effects on magnetization reversal properties of submicron-size permalloy patterns for radio-frequency devices.
Ferromagnetic resonance (FMR) spectroscopy is used to measure direct-current (dc) effects on the magnetization reversal properties of submicron-sized lateral patterned magnetic material. The observed FMR frequency-field relationship shows that for both 240 and 550 nm wide Permalloy (Py) nanowires the coercivity is reduced by {approx}33% when a 50 mA dc passes through the transmission line where the nanowires are incorporated. The temperature dependence of the coercivity has a {radical}T relationship which suggests the coherent rotation mode tendency in such 100 nm thick Py nanowires.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 979893
- Report Number(s):
- ANL/MSD/JA-66873; APPLAB; TRN: US201011%%457
- Journal Information:
- Appl. Phys. Lett., Vol. 95, Issue 2009; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- ENGLISH
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