Correlation Between Saturation Magnetostriction and Damping Constant in $(\hbox{Ni-Fe})_{1-x}\hbox{M}{x}$ ($\hbox{M}=\hbox{Pt}$, Au, Pd, and Cr) Films

Endo, Yasushi; Mitsuzuka, Yoshio; Okawa, K.; Shimada, Yutaka; Yamaguchi, Masahiro

doi:10.1109/tmag.2011.2158081

Cited by 8 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This variation is similar to that of (Ni-Fe) 1-x M x (M¼Pt, Au, Pd, and Cr) as reported in our previous work. 17 The physical background for this variation is not clear at present, but may be ascribed to the variation of the spin-orbit coupling, which depends sensitively on 4d elements such as Zr and Nb. 18,19 It is also likely due to the fact that that the magnetostriction changes markedly as both x and y increase.…”

Section: Resultsmentioning

confidence: 99%

Effect of Zr and Nb additions on the high-frequency magnetic properties of Co85-(x+y)Zr3+xNb12+y films

Endo

Ito

Miyazaki

et al. 2015

Journal of Applied Physics

Self Cite

View full text Add to dashboard Cite

This high-frequency magnetic properties of 250-nm-thick Co 85-(xþy) Zr 3þx Nb 12þy (x: 0-5.5, y: 0-11.0) amorphous films are examined as functions of Zr (x) and Nb (y) concentrations. Both x and y influence the high-frequency magnetic properties. In the case of x < 3.0 and y 5.0, each permeability spectrum appears, but increasing x and y decreases the ferromagnetic resonance (FMR) frequency from 1.20 GHz to 0.41 GHz and increases the effective damping constant from 0.15 to 0.43. For x ¼ 3.0 and y ¼ 8.2, although the permeability spectrum disappears, the effective damping constant is estimated to be approximately 0.82. In contrast, the high-frequency magnetic properties cannot be obtained for x ¼ 5.5 and y ¼ 11.0. Hence, appropriately selecting both Zr and Nb concentrations should effectively control the high-frequency magnetic properties. This finding should be of interest from the viewpoint of new thin film applications, such as microscopic electromagnetic compatibility (EMC), in which properly adjusting the permeability and FMR profiles is vital. V C 2015 AIP Publishing LLC. [http://dx.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Zr and Nb additions on the high-frequency magnetic properties of Co85-(x+y)Zr3+xNb12+y films

Endo

Ito

Miyazaki

et al. 2015

Journal of Applied Physics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Soft magnetic alloys such as permalloy (Py) are widely used in these spintronic/microwave devices due to low ferromagnetic resonance (FMR) linewidth and low coercivity field, while the magnetic parameters of Py play a critical role in the performance of the devices. Many works on tailoring magnetic properties have been intensively studied, such as doping, − changing the composition ratio, and thickness . In addition, the influence of the adjacent nonmagnetic (NM) layer − has also been investigated in NM/Py bilayer heterostructures.…”

Section: Introductionmentioning

confidence: 99%

Monotonically Decreasing Ferromagnetic Resonance Linewidth of Cu/Ni_0.81Fe_0.19 Bilayer Heterostructures with the Increasing Sputtering Rate of the Cu Layer

et al. 2021

J. Phys. Chem. C

View full text Add to dashboard Cite

Permalloy with low ferromagnetic resonance linewidth has great application potential in spintronic/microwave devices. In this work, we demonstrated that the nonmagnetic (Cu) layer’s sputtering rate has a considerable impact on Ni0.81Fe0.19’s linewidth in Cu (4 nm)/Ni0.81Fe0.19 (3 nm) bilayer heterostructures. A monotonically decreasing out-of-plane linewidth was displayed as the sputtering rates increased from 0.27 to 1.75 Å/s due to interdiffusion. Meanwhile, a large reduction of the in-plane linewidth from 18.54 to 7.83 mT was also obtained from suppressing the interfacial inhomogeneity and two-magnon scattering effects. The present work contributes to a clearer understanding of Cu/Ni0.81Fe0.19 nanoscale films’ interfacial inhomogeneity and opens a new road on tailoring magnetodynamic properties.

show abstract

Study on measurement technique for magnetization dynamics of thin films

Endo

Mori²,

Shimada

et al. 2018

Applied Physics Letters

View full text Add to dashboard Cite

This paper describes our proposed measurement technique for the magnetization dynamics in thin films, which employs a microstripe line probe to detect ferromagnetic resonance (FMR) spectra for a film sample either with or without tensile stress. By measurement of FMR frequency shifts using Lorentzian fits to the FMR spectra for a film with and without tensile stress, saturation magnetostriction (λs) can be determined. The measured values were compared with those estimated by the optical cantilever method using the same samples in good agreement. At the same time, a Gilbert damping constant (α) was determined using both the FMR frequency and the FMR linewidth for the tensile stress free film. The results of the experiment demonstrate that our proposed measurement technique allows for more precise evaluation of magnetization dynamics by providing information on both α and λs simultaneously for an individual sample.

show abstract

Correlation Between Saturation Magnetostriction and Damping Constant in $(\hbox{Ni-Fe})_{1-x}\hbox{M}{x}$ ($\hbox{M}=\hbox{Pt}$, Au, Pd, and Cr) Films

Cited by 8 publications

References 15 publications

Effect of Zr and Nb additions on the high-frequency magnetic properties of Co85-(x+y)Zr3+xNb12+y films

Effect of Zr and Nb additions on the high-frequency magnetic properties of Co85-(x+y)Zr3+xNb12+y films

Monotonically Decreasing Ferromagnetic Resonance Linewidth of Cu/Ni_0.81Fe_0.19 Bilayer Heterostructures with the Increasing Sputtering Rate of the Cu Layer

Study on measurement technique for magnetization dynamics of thin films

Contact Info

Product

Resources

About

Correlation Between Saturation Magnetostriction and Damping Constant in $(\hbox{Ni-Fe})_{1-x}\hbox{M}{x}$ ($\hbox{M}=\hbox{Pt}$, Au, Pd, and Cr) Films

Cited by 8 publications

References 15 publications

Effect of Zr and Nb additions on the high-frequency magnetic properties of Co85-(x+y)Zr3+xNb12+y films

Effect of Zr and Nb additions on the high-frequency magnetic properties of Co85-(x+y)Zr3+xNb12+y films

Monotonically Decreasing Ferromagnetic Resonance Linewidth of Cu/Ni0.81Fe0.19 Bilayer Heterostructures with the Increasing Sputtering Rate of the Cu Layer

Study on measurement technique for magnetization dynamics of thin films

Contact Info

Product

Resources

About

Monotonically Decreasing Ferromagnetic Resonance Linewidth of Cu/Ni_0.81Fe_0.19 Bilayer Heterostructures with the Increasing Sputtering Rate of the Cu Layer