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Title: High power all-metal spin torque oscillator using full Heusler Co{sub 2}(Fe,Mn)Si

Abstract

We showed the high rf power (P{sub out}) emission from an all-metal spin torque oscillator (STO) with a Co{sub 2}Fe{sub 0.4}Mn{sub 0.6}Si (CFMS)/Ag/CFMS giant magnetoresistance (GMR) stack, which was attributable to the large GMR effect thanks to the highly spin-polarized CFMS. The oscillation spectra were measured by varying the magnetic field direction, and the perpendicular magnetic field was effective to increase P{sub out} and the Q factor. We simultaneously achieved a high output efficiency of 0.013%, a high Q of 1124, and large frequency tunability. CFMS-based all-metal STO is promising for overcoming the difficulties that conventional STOs are confronted with.

Authors:
; ; ; ;  [1]; ;  [2]
  1. Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
  2. Spintronics Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568 (Japan)
Publication Date:
OSTI Identifier:
22311024
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COBALT COMPOUNDS; EFFICIENCY; EMISSION; IRON COMPOUNDS; MAGNETIC FIELDS; MAGNETORESISTANCE; MANGANESE COMPOUNDS; METALS; OSCILLATIONS; OSCILLATORS; RF SYSTEMS; SILICON COMPOUNDS; SILVER; SPECTRA; SPIN; SPIN ORIENTATION

Citation Formats

Seki, Takeshi, E-mail: go-sai@imr.tohoku.ac.jp, Sakuraba, Yuya, Ueda, Masaki, Okura, Ryo, Takanashi, Koki, Arai, Hiroko, and Imamura, Hiroshi. High power all-metal spin torque oscillator using full Heusler Co{sub 2}(Fe,Mn)Si. United States: N. p., 2014. Web. doi:10.1063/1.4895024.
Seki, Takeshi, E-mail: go-sai@imr.tohoku.ac.jp, Sakuraba, Yuya, Ueda, Masaki, Okura, Ryo, Takanashi, Koki, Arai, Hiroko, & Imamura, Hiroshi. High power all-metal spin torque oscillator using full Heusler Co{sub 2}(Fe,Mn)Si. United States. doi:10.1063/1.4895024.
Seki, Takeshi, E-mail: go-sai@imr.tohoku.ac.jp, Sakuraba, Yuya, Ueda, Masaki, Okura, Ryo, Takanashi, Koki, Arai, Hiroko, and Imamura, Hiroshi. Mon . "High power all-metal spin torque oscillator using full Heusler Co{sub 2}(Fe,Mn)Si". United States. doi:10.1063/1.4895024.
@article{osti_22311024,
title = {High power all-metal spin torque oscillator using full Heusler Co{sub 2}(Fe,Mn)Si},
author = {Seki, Takeshi, E-mail: go-sai@imr.tohoku.ac.jp and Sakuraba, Yuya and Ueda, Masaki and Okura, Ryo and Takanashi, Koki and Arai, Hiroko and Imamura, Hiroshi},
abstractNote = {We showed the high rf power (P{sub out}) emission from an all-metal spin torque oscillator (STO) with a Co{sub 2}Fe{sub 0.4}Mn{sub 0.6}Si (CFMS)/Ag/CFMS giant magnetoresistance (GMR) stack, which was attributable to the large GMR effect thanks to the highly spin-polarized CFMS. The oscillation spectra were measured by varying the magnetic field direction, and the perpendicular magnetic field was effective to increase P{sub out} and the Q factor. We simultaneously achieved a high output efficiency of 0.013%, a high Q of 1124, and large frequency tunability. CFMS-based all-metal STO is promising for overcoming the difficulties that conventional STOs are confronted with.},
doi = {10.1063/1.4895024},
journal = {Applied Physics Letters},
number = 9,
volume = 105,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}