Temperature dependence of the domain wall mobility in YIG, deduced from the frequency spectra of the initial susceptibility of polycrystals

Guyot, M.; Cagan, V.

doi:10.1016/0304-8853(82)90273-6

Cited by 48 publications

(7 citation statements)

References 10 publications

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“…where χ 0 is the dc susceptibility, ω 0 = α/m is the domain wall resonance, and ω c = α/β is a relaxation frequency, reflecting the timescale τ c = β/α for displacements to decay. For dc fields H, the phenomenological mobility µ = (ds/dt)/H of a uniform domain wall is 2M S /β in this model [51].…”

Section: Frequency-dependent Ac Susceptibilitymentioning

confidence: 82%

AC susceptometry of 2D van der Waals magnets enabled by the coherent control of quantum sensors

Zhang,

Wang,

Tartaglia

et al. 2021

Preprint

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Precision magnetometry is fundamental to the development of novel magnetic materials and devices. Recently, the nitrogen-vacancy (NV) center in diamond has emerged as a promising probe for static magnetism in 2D van der Waals materials, capable of quantitative imaging with nanoscale spatial resolution. However, the dynamic character of magnetism, crucial for understanding the magnetic phase transition and achieving technological applications, has rarely been experimentally accessible in single 2D crystals. Here, we coherently control the NV center's spin precession to achieve ultra-sensitive, quantitative ac susceptometry of a 2D ferromagnet. Combining dc hysteresis with ac susceptibility measurements varying temperature, field, and frequency, we illuminate the formation, mobility, and consolidation of magnetic domain walls in few-layer CrBr3. We show that domain wall mobility is enhanced in ultrathin CrBr3, with minimal decrease for excitation frequencies exceeding hundreds of kilohertz, and is influenced by the domain morphology and local pinning of the flake. Our technique extends NV magnetometry to the multi-functional ac and dc magnetic characterization of wide-ranging spintronic materials at the nanoscale.

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Section: Frequency-dependent Ac Susceptibilitymentioning

confidence: 82%

AC susceptometry of 2D van der Waals magnets enabled by the coherent control of quantum sensors

Zhang,

Wang,

Tartaglia

et al. 2021

Preprint

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“…Thus the shift of the spin susceptibility dispersion frequency is attributed to this effect. The frequency shift of DW susceptibility spectrum can be caused by the magnetic field effect on the domain wall [19]. In Fig.4, In the absence of external field, the difference between f d and f d_max is large due to high damping in DW resonance.…”

Section: Evaluation Of Frequency Dispersion Parameters For the Permentioning

confidence: 96%

Towards electromagnetic metamaterial: Negative permeability spectra of YIG composite materials

Tsutaoka

Kinoshita

Kasagi

et al. 2013

2013 IEEE International Symposium on Electromagnetic Compatibility

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Yttrium Iron Garnet (YIG) granular composite materials in the high particle content show negative permeability spectra under external magnetic field in the microwave range. In this study, the complex permeability spectra ( r =  r ' -j r ") of 56.2 vol.% YIG composite under external dc field have been analyzed using a permeability dispersion formula having the domain wall (DW) vibration and the gyromagnetic spin rotation susceptibilities,  d and  s . Frequency dispersion parameters of the DW and spin resonances were evaluated. With increasing dc external field, static susceptibility of the two components decreases and the resonance frequencies shift toward higher frequency range. The DW resonance contributes to the negative permeability as well as the spin resonance up to about 600 Oe. Above 600 Oe, DW contribution becomes very small; spin resonance contribution becomes dominant. The variation of the maximum frequency in the imaginary part of susceptibilities with damping factors has fairly good agreement with the theoretical calculation.

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“…39,41 In the Ni-Zn ferrite composite material in which the domain wall susceptibility has a resonance type dispersion and the spin susceptibility has a relaxation type one, the high frequency permeability spectrum up to several gigahertz can be predicted by the coherent model. 39…”

Section: -8mentioning

confidence: 99%

Permeability spectra of yttrium iron garnet and its granular composite materials under dc magnetic field

Tsutaoka

Kasagi

Hatakeyama

2011

Journal of Applied Physics

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Hard magnetic properties of Mn-Ga melt-spun ribbons J. Appl. Phys. 112, 083901 (2012) Influence of chemical pressure in Sn-substituted Ni2MnGa Heusler alloy: Experimental and theoretical studies J. Appl. Phys. 112, 073921 (2012) Hysteresis effects in the inverse magnetocaloric effect in martensitic Ni-Mn-In and Ni-Mn-Sn J. Appl. Phys. 112, 073914 (2012) Magnetic and electronic properties of Fe and Ni codoped SnO2

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Temperature dependence of the domain wall mobility in YIG, deduced from the frequency spectra of the initial susceptibility of polycrystals

Cited by 48 publications

References 10 publications

AC susceptometry of 2D van der Waals magnets enabled by the coherent control of quantum sensors

AC susceptometry of 2D van der Waals magnets enabled by the coherent control of quantum sensors

Towards electromagnetic metamaterial: Negative permeability spectra of YIG composite materials

Permeability spectra of yttrium iron garnet and its granular composite materials under dc magnetic field

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