Ferromagnetic resonance study of annealed NiFe/FeMn/CoFe trilayers

Ki Yeon Kim; Hyeok Cheol Choi; Je Ho Shim; Dong Hyun Kim; Chun Yeol You; Jeong Soo Lee

doi:10.1109/TMAG.2009.2020552

Ferromagnetic resonance study of annealed NiFe/FeMn/CoFe trilayers

Ki Yeon Kim
, Hyeok Cheol Choi
, Je Ho Shim
, Dong Hyun Kim
, Chun Yeol You
, Jeong Soo Lee

Department of Physics and Chemistry

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The effect of a thermal treatment on the exchange field in 19-nm NiFe(bottom)/15-nm FeMn/19-nm CoFe(top) trilayers has been investigated by employing a vibrating sample magnetometer (VSM) and a ferromagnetic resonance (FMR) spectrometer. FMR spectra as a function of applied dc field reveal that there are two distinct resonance peaks corresponding to each ferromagnetic layer. It is found that exchange fields determined from the in-plane angular dependence of the resonance field are in accord with that determined through the magnetic hysteresis loops for the NiFe/FeMn interface rather than the CoFe/FeMn one. A FMR linewidth broadening as a function of the annealing temperatures is attributed to the interdiffusion between the two magnetic interfaces across a FeMn layer.

Original language	English
Article number	4957748
Pages (from-to)	2766-2769
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	45
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2009.2020552
State	Published - Jun 2009

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by KOSEF (Nuclear R&D program, No. R01-2006-000-10274-0) through a grant provided by the Korea government (MEST) and was also supported by the research grant of the Chungbuk National University in 2007. The work of C. Y. You was supported in part by Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2005-070-C00053).

Keywords

Exchange bias
FM/AFM/FM trilayer
Ferromagnetic resonance
Linewidth broadening
Resonance field
Thermal stability

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10.1109/TMAG.2009.2020552

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title = "Ferromagnetic resonance study of annealed NiFe/FeMn/CoFe trilayers",

abstract = "The effect of a thermal treatment on the exchange field in 19-nm NiFe(bottom)/15-nm FeMn/19-nm CoFe(top) trilayers has been investigated by employing a vibrating sample magnetometer (VSM) and a ferromagnetic resonance (FMR) spectrometer. FMR spectra as a function of applied dc field reveal that there are two distinct resonance peaks corresponding to each ferromagnetic layer. It is found that exchange fields determined from the in-plane angular dependence of the resonance field are in accord with that determined through the magnetic hysteresis loops for the NiFe/FeMn interface rather than the CoFe/FeMn one. A FMR linewidth broadening as a function of the annealing temperatures is attributed to the interdiffusion between the two magnetic interfaces across a FeMn layer.",

keywords = "Exchange bias, FM/AFM/FM trilayer, Ferromagnetic resonance, Linewidth broadening, Resonance field, Thermal stability",

author = "Kim, \{Ki Yeon\} and Choi, \{Hyeok Cheol\} and Shim, \{Je Ho\} and Kim, \{Dong Hyun\} and You, \{Chun Yeol\} and Lee, \{Jeong Soo\}",

note = "Funding Information: ACKNOWLEDGMENT This work was supported by KOSEF (Nuclear R\&D program, No. R01-2006-000-10274-0) through a grant provided by the Korea government (MEST) and was also supported by the research grant of the Chungbuk National University in 2007. The work of C. Y. You was supported in part by Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2005-070-C00053).",

year = "2009",

month = jun,

doi = "10.1109/TMAG.2009.2020552",

language = "English",

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T1 - Ferromagnetic resonance study of annealed NiFe/FeMn/CoFe trilayers

AU - Kim, Ki Yeon

AU - Choi, Hyeok Cheol

AU - Shim, Je Ho

AU - Kim, Dong Hyun

AU - You, Chun Yeol

AU - Lee, Jeong Soo

N1 - Funding Information: ACKNOWLEDGMENT This work was supported by KOSEF (Nuclear R&D program, No. R01-2006-000-10274-0) through a grant provided by the Korea government (MEST) and was also supported by the research grant of the Chungbuk National University in 2007. The work of C. Y. You was supported in part by Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF-2005-070-C00053).

PY - 2009/6

Y1 - 2009/6

N2 - The effect of a thermal treatment on the exchange field in 19-nm NiFe(bottom)/15-nm FeMn/19-nm CoFe(top) trilayers has been investigated by employing a vibrating sample magnetometer (VSM) and a ferromagnetic resonance (FMR) spectrometer. FMR spectra as a function of applied dc field reveal that there are two distinct resonance peaks corresponding to each ferromagnetic layer. It is found that exchange fields determined from the in-plane angular dependence of the resonance field are in accord with that determined through the magnetic hysteresis loops for the NiFe/FeMn interface rather than the CoFe/FeMn one. A FMR linewidth broadening as a function of the annealing temperatures is attributed to the interdiffusion between the two magnetic interfaces across a FeMn layer.

AB - The effect of a thermal treatment on the exchange field in 19-nm NiFe(bottom)/15-nm FeMn/19-nm CoFe(top) trilayers has been investigated by employing a vibrating sample magnetometer (VSM) and a ferromagnetic resonance (FMR) spectrometer. FMR spectra as a function of applied dc field reveal that there are two distinct resonance peaks corresponding to each ferromagnetic layer. It is found that exchange fields determined from the in-plane angular dependence of the resonance field are in accord with that determined through the magnetic hysteresis loops for the NiFe/FeMn interface rather than the CoFe/FeMn one. A FMR linewidth broadening as a function of the annealing temperatures is attributed to the interdiffusion between the two magnetic interfaces across a FeMn layer.

KW - Exchange bias

KW - FM/AFM/FM trilayer

KW - Ferromagnetic resonance

KW - Linewidth broadening

KW - Resonance field

KW - Thermal stability

UR - https://www.scopus.com/pages/publications/66549123956

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DO - 10.1109/TMAG.2009.2020552

M3 - Article

AN - SCOPUS:66549123956

SN - 0018-9464

VL - 45

SP - 2766

EP - 2769

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 6

M1 - 4957748

ER -

Ferromagnetic resonance study of annealed NiFe/FeMn/CoFe trilayers

Abstract

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Keywords

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