skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Characterization of spin pumping effect in Permalloy/Cu/Pt microfabricated lateral devices

Abstract

We studied ferromagnetic resonance (FMR) for microfabricated lateral devices consisting of a Permalloy (Py) rectangular element and a Pt nano-element bridged by a Cu wire, which were located on a coplanar waveguide. A change in the resonance linewidth (Δf) was observed in the FMR spectra when the distance between Py and Pt (d) was varied. For devices with d < 400 nm, Δf definitely increased, suggesting the enhancement of the Gilbert damping constant (α). We discussed a possible reason for the this enhancement taking into account the increase in the efficiency of spin pumping into Cu due to the spin absorption of the attached Pt.

Authors:
; ;  [1];  [2]
  1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
  2. Central Research Institute of Electric Power Industry, Tokyo 201-8511 (Japan)
Publication Date:
OSTI Identifier:
22273907
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION; COPPER; DAMPING; FERROMAGNETIC RESONANCE; INTERFACES; NANOSTRUCTURES; PERMALLOY; PLATINUM; PUMPING; SPIN

Citation Formats

Yamamoto, Tatsuya, Seki, Takeshi, Takanashi, Koki, and Ono, Shimpei. Characterization of spin pumping effect in Permalloy/Cu/Pt microfabricated lateral devices. United States: N. p., 2014. Web. doi:10.1063/1.4861681.
Yamamoto, Tatsuya, Seki, Takeshi, Takanashi, Koki, & Ono, Shimpei. Characterization of spin pumping effect in Permalloy/Cu/Pt microfabricated lateral devices. United States. https://doi.org/10.1063/1.4861681
Yamamoto, Tatsuya, Seki, Takeshi, Takanashi, Koki, and Ono, Shimpei. 2014. "Characterization of spin pumping effect in Permalloy/Cu/Pt microfabricated lateral devices". United States. https://doi.org/10.1063/1.4861681.
@article{osti_22273907,
title = {Characterization of spin pumping effect in Permalloy/Cu/Pt microfabricated lateral devices},
author = {Yamamoto, Tatsuya and Seki, Takeshi and Takanashi, Koki and Ono, Shimpei},
abstractNote = {We studied ferromagnetic resonance (FMR) for microfabricated lateral devices consisting of a Permalloy (Py) rectangular element and a Pt nano-element bridged by a Cu wire, which were located on a coplanar waveguide. A change in the resonance linewidth (Δf) was observed in the FMR spectra when the distance between Py and Pt (d) was varied. For devices with d < 400 nm, Δf definitely increased, suggesting the enhancement of the Gilbert damping constant (α). We discussed a possible reason for the this enhancement taking into account the increase in the efficiency of spin pumping into Cu due to the spin absorption of the attached Pt.},
doi = {10.1063/1.4861681},
url = {https://www.osti.gov/biblio/22273907}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 115,
place = {United States},
year = {Wed May 07 00:00:00 EDT 2014},
month = {Wed May 07 00:00:00 EDT 2014}
}