DocumentCode
1451601
Title
Magnetic Properties of (Ni 
Fe 
) <sub>1-x</sub>-Gd<sub>x</sub> thin films (30 nm) are deposited by sputtering at room temperature and studied using X-ray diffraction, vibrating sample magnetometer, and ferromagnetic resonance (FMR). The film structure changes from polycrystalline to amorphous when Gd content is around 5.7%. The magnetization is reduced almost linearly with the increase of the Gd content, while the high hysteresis squareness along the in-plane easy-axis, the low coercivity H<sub>c</sub> of less than 10 Oe, and the high maximum permeability of around 1000 are all preserved. Theoretical fitting of angular dependences of FMR field yields the second and forth order perpendicular anisotropy constants K<sub>perp1</sub> and K<sub>perp2</sub> which show a spin reorientation with increasing Gd doping. The FMR linewidth is fitted by considering the contributions from Gilbert damping and inhomogeneous broadening. It is found that the damping coefficient alpha is tripled along with an enhancement of the gyromagnetic ratio gamma when the Gd content rises to 9.3%.</div></div>
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<div class='row g-0 align-items-center mb-2'><div class='col-12 col-md-3 fullRecLabelEnglish fw-bold mb-2 mb-md-0'><span class='text-muted small'>Keywords</span></div><div class='col-12 col-md-9 leftDirection leftAlign'>amorphisation; coercive force; damping; doping; ferromagnetic materials; ferromagnetic resonance; gadolinium alloys; gyromagnetic ratio; iron alloys; magnetic hysteresis; magnetic permeability; magnetic thin films; metallic thin films; nickel alloys; perpendicular magnetic anisotropy; soft magnetic materials; spin dynamics; sputter deposition; (Ni<sub>83</sub>Fe<sub>17</sub>)<sub>1-x</sub>Gd<sub>x</sub>; Gilbert damping; X-ray diffraction; coercivity; diluted doping; ferromagnetic resonance; gyromagnetic ratio; hysteresis squareness; inhomogeneous broadening; magnetization; permeability; perpendicular anisotropy constants; polycrystalline-amorphous transformation; spin reorientation; sputtering; temperature 293 K to 298 K; thin films; vibrating sample magnetometry; Doping; ferromagnetic resonance; gadolinium; magnetic films;</div></div>
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<div class='row g-0 align-items-center mb-2'><div class='col-12 col-md-3 fullRecLabelEnglish fw-bold mb-2 mb-md-0'><span class='text-muted small'>fLanguage</span></div><div class='col-12 col-md-9 leftDirection leftAlign'>English</div></div>
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<div class='row g-0 align-items-center mb-2'><div class='col-12 col-md-3 fullRecLabelEnglish fw-bold mb-2 mb-md-0'><span class='text-muted small'>Journal_Title</span></div><div class='col-12 col-md-9 leftDirection leftAlign'>Magnetics, IEEE Transactions on</div></div>
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<div class='row g-0 align-items-center mb-2'><div class='col-12 col-md-3 fullRecLabelEnglish fw-bold mb-2 mb-md-0'><span class='text-muted small'>ISSN</span></div><div class='col-12 col-md-9 leftDirection leftAlign'>0018-9464</div></div>
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<div class='row g-0 align-items-center mb-2'><div class='col-12 col-md-3 fullRecLabelEnglish fw-bold mb-2 mb-md-0'><span class='text-muted small'>DOI</span></div><div class='col-12 col-md-9 leftDirection leftAlign'>10.1109/TMAG.2009.2024164</div></div>
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<div class='row g-0 align-items-center mb-2'><div class='col-12 col-md-3 fullRecLabelEnglish fw-bold mb-2 mb-md-0'><span class='text-muted small'>Filename</span></div><div class='col-12 col-md-9 leftDirection leftAlign'>5257373</div></div>
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https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1451601Magnetic Properties of (Ni
https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1451601