1977
DOI: 10.1139/p77-112
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Ferromagnetic antiresonance transmission of 24 GHz radiation through nickel (20 to 364 °C)

Abstract: Ferromagnetic antiresonance (FMAR) transmission measurements at 24 GHz, and at temperatures between 20°C and 364"C, are reportedforpolycrystalline nickel foil 20pm thick. The results can be described by the usual equation of motion for the magnetization and using a Landau-Lifshitz damping parameter of 2.45 -c 0. l x 108 s-' and a g factor of 2.187 -c 0.005, both temperature independent. The temperature independence of the damping was confirmed by measurements of the maximum transmission amplitude at FMAR as a … Show more

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Cited by 34 publications
(11 citation statements)
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“…Kambersky [25] recently calculated the temperature dependence of the Gilbert damping in Ni. He obtained a reasonable agreement with the FMAR results of [24], [26].…”
Section: Spin Orbit Relaxation In Metallic Ferromagnetssupporting
confidence: 67%
“…Kambersky [25] recently calculated the temperature dependence of the Gilbert damping in Ni. He obtained a reasonable agreement with the FMAR results of [24], [26].…”
Section: Spin Orbit Relaxation In Metallic Ferromagnetssupporting
confidence: 67%
“…However, results of various authors are rather controversial. For example, some of t,he authors explain the temperature dependence of the resonance linewidth by the Landau-Lifshits damping term with temperature-and frequency-independent parameter 3, up to TC [2,7,9]. On the other hand, Bhagat et al [5,61 state that none of the Landau-Lifshits, Gilbert or Wangsness damping ternis with temperature-independent damping parameter and g-factor can explain their experimental data.…”
Section: Introductionmentioning
confidence: 99%
“…On the other hand, Bhagat et al [5,61 state that none of the Landau-Lifshits, Gilbert or Wangsness damping ternis with temperature-independent damping parameter and g-factor can explain their experimental data. A rapid decrease of the g-factor t o the value 2.00 at the transition from the ferro-to the paramagnetic state was observed in some cases [l, 4, 81, but in others no change [9] or a slight increase [3, 5, 61 of g was found. The most different behaviour of FMR was reported by Salamon [3] and Sporel and Biller [8].…”
Section: Introductionmentioning
confidence: 99%
“…Pour des modes à polarisation circulaire : L'impédance de surface des modes à polarisation circulaire droite peut alors s'exprimer par le rapport des champs définis en (35), soit : La résolution du système d'équation (38) permet de calculer ce rapport ainsi que le taux de transmission défini par : C'est par l'intermédiaire de ces deux grandeurs que l'on peut confronter la théorie et l'expérience. Nous allons décrire brièvement les phénomènes physiques correspondant aux résonances observées à température ambiante.…”
unclassified
“…b) Théorie des modes d'ondes de spin. -Pour calculer l'impédance de surface Zs d'une lame mince, la seule méthode rigoureuse consiste à résoudre numériquement le système d'équations (38). Nous donnons, à titre indicatif, sur la figure 8, les variations de la partie réelle de Zs de lames minces de nickel dans le cas d'un fort blocage des spins en surface (condition de Kittel : M = 0).…”
unclassified