Temperature dependence of the spin wave in Co/CoO bilayers

2007 ◽  
Vol 310 (2) ◽  
pp. e539-e540
Author(s):  
H. Moradi
Keyword(s):  
Temperature Dependence ◽  
Spin Wave

Temperature Dependence of the Exchange Splitting in Ferromagnetic Metals II. The Study of Stoner Excitations by the de Haas–van Alphen Effect

1974 ◽  
Vol 52 (8) ◽  
pp. 704-707 ◽  
Author(s):  
D. M. Edwards
Keyword(s):  
Temperature Dependence ◽  
Spin Wave ◽  
Itinerant Electron ◽  
Exchange Splitting ◽  
Ferromagnetic Metals

It is shown that the de Haas–van Alphen (dHvA) effect in ferromagnetic metals can give information about the Stoner T2 term in the temperature dependence of the magnetization, without interference from spin wave contributions. In particular, the temperature dependence of the dHvA frequency for a very weak itinerant electron ferromagnet could distinguish clearly between conflicting theories of these materials.

THE 2-d HEISENBERG MODEL WITH VARIOUS TYPES OF INTERACTIONS: TEMPERATURE DEPENDENCE OF MAGNETIC PARAMETERS AND THE PHASE TRANSITION TEMPERATURE

1993 ◽  
Vol 07 (01n03) ◽  
pp. 504-507
Author(s):  
N. GARCIA ◽  
A. LEVANYUK ◽  
P. SERENA
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Temperature Dependence ◽  
Spin Wave ◽  
Phase Transition Temperature ◽  
Heisenberg Model ◽  
Wave Theory ◽  
Ferromagnetic Phase ◽  
Temperature Perturbation ◽  
Spin Wave Theory

Using the low-temperature perturbation (spin wave) theory we calculate the temperature dependence of anisotropy constant, spin-wave stiffness, spontaneous magnetization for a two-dimensional ferromagnetic Heisenberg model with various types of anisotropy and interactions. We found that the Polyakov renormalization procedure is inapplicable for ferromagnetic phase at any anisotropy. We did not find the reorientation phase transition due to dipole-dipole interaction predicted by Pescia and Pokrovsky. Taking into account the spin flips we obtained a phase transition temperature in good agreement with results of our Monte Carlo calculations. These results demonstrate also the effectiveness of the spin wave theory.

Temperature dependence of the spin wave spectrum in the double exchange model

2001 ◽  
Vol 89 (11) ◽  
pp. 6630-6632
Author(s):  
A. Slepoy ◽  
R. R. P. Singh ◽  
E. Shender
Keyword(s):  
Temperature Dependence ◽  
Spin Wave ◽  
Wave Spectrum ◽  
Double Exchange ◽  
Exchange Model ◽  
Spin Wave Spectrum

Temperature dependence of spin wave parameters in a single domain γ-Mn(10%Fe, 3%Cu) alloy

1992 ◽  
Vol 180-181 ◽  
pp. 247-249 ◽  
Author(s):  
K. Mikke ◽  
J. Jankowska-Kisielinska ◽  
E. Jaworska
Keyword(s):  
Temperature Dependence ◽  
Spin Wave ◽  
Single Domain ◽  
Cu Alloy ◽  
Wave Parameters

scholarly journals Magnetization of magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles

2021 ◽  
Vol 7 (3) ◽  
pp. 85-90
Author(s):  
Gunnar Suchaneck
Keyword(s):  
Curie Temperature ◽  
Temperature Dependence ◽  
Magnetic Materials ◽  
Spin Wave ◽  
Analytical Description ◽  
Higher Order ◽  
Ferromagnetic Behavior ◽  
Double Perovskites ◽  
Langevin Function ◽  
First Time

Magnetization is a key property of magnetic materials. Nevertheless, a satisfactory, analytical description of the temperature dependence of magnetization in double perovskites such as strontium ferromolybdate is still missing. In this work, we develop, for the very first time, a model of the magnetization of nanosized, magnetically inhomogeneous Sr2FeMoO6-δ nanoparticles. The temperature dependence of magnetization was approximated by an equation consisting of a Bloch-law spin wave term, a higher order spin wave correction, both taking into account the temperature dependence of the spin-wave stiffness, and a superparamagnetic term including the Langevin function. In the limit of pure ferromagnetic behavior, the model is applicable also to SFMO ceramics. In the vicinity of the Curie temperature (T/TC > 0.85), the model fails.

scholarly journals Temperature dependence of spin-wave modes and Gilbert damping in lanthanum-doped yttrium-iron-garnet films

AIP Advances ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 025301 ◽  
Author(s):  
Lichuan Jin ◽  
Yuele Wang ◽  
Guangduo Lu ◽  
Jialu Li ◽  
Yujie He ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Spin Wave ◽  
Yttrium Iron Garnet ◽  
Yttrium Iron ◽  
Gilbert Damping ◽  
Garnet Films ◽  
Iron Garnet ◽  
Wave Modes

scholarly journals INVESTIGATION OF ANGULAR AND TEMPERATURE DEPENDENCE OF SPIN-WAVE RESONANCE SPECTRA IN MULTILAYER MAGNETIC FILMS

2018 ◽  
Vol 185 ◽  
pp. 02001
Author(s):  
Andrey Bazhanov
Keyword(s):  
Temperature Dependence ◽  
Spin Wave ◽  
Resonance Field ◽  
Magnetic Films ◽  
Depth Of Penetration ◽  
Spin Wave Resonance ◽  
Garnet Films ◽  
Wave Resonance ◽  
Equilibrium Magnetization ◽  
Dissipative Mechanism

In this letter we study the dependences of the resonance field Hn and the linewidth 2ΔHn of the spin-wave resonance (SWR) modes in two-layer ferrite-garnet films with dissipative and mixed spinpinning mechanisms. It is established that for films with a dissipative mechanism of spin pinning, the increase in the linewidth at ΘH = 35° is associated with the maximum misorientation between the external magnetic field and the direction of the equilibrium magnetization of the sample. For films with a mixed spin-pinning mechanism, an increase in the linewidth 2ΔHn with increasing angle ΘH is associated with an increase in the depth of penetration of the spin wave into the pinning layer for such films. On the temperature dependence of the linewidth 2ΔHn for samples with a mixed fixation mechanism at a perpendicular orientation, an increase in the width of the absorption peak lines is observed. And with an increase in the peak number, the maximum of the linewidth shifts to the low-temperature region. With parallel orientation, the linewidth 2ΔHn in a wide temperature range from 20°C to 200°C remains practically unchanged.

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