Magnetic Viscosity

Müller, K.‐H.

doi:10.1016/b978-0-12-803581-8.02807-1

Cited by 3 publications

(2 citation statements)

References 19 publications

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“…In this way, a material with high coercivity its elementary magnets resists the change of position. In the material science, experimental framework, [ 51 ] there is a close relationship between the magnetic related to viscosity and coercivity, this relationship was predicted theoretically and observed experimentally. Thus, we have a fundamental role in both cases, that is, between viscosity and coercivity, where they play the so‐called activation volume, which is the relevant volume where thermally activated and field‐induced magnetization processes occur, respectively.…”

Section: Introductionmentioning

confidence: 84%

“…Thus, one way to analyze coercivity is through viscosity 𝜂 in our model. [51] In order to be as clear as possible, the details about the computation of the shear viscosity and entropy density ratio are present in the Appendix. In particular, we will focus on the 𝜂∕S ratio, where from Equation (A11) and dependence of the viscosity on the magnetic field, characterizing a magnetic side effect, and describing the slow relaxation of the magnetization of paramagnetic materials when they acquire magnetization in the presence of an external magnetic field B (left panel of Figure 7).…”

Section: Holographic Paramagnetism/ferromagnetism Phase Transitionmentioning

confidence: 99%

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AdS/BCFT Correspondence and Horndeski Gravity in the Presence of Gauge Fields: Holographic Paramagnetism/Ferromagnetism Phase Transition

Santos,

Bravo‐Gaete,

Sokoliuk

et al. 2023

Fortschritte der Physik

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This paper presents a dual gravity model for a (2+1)‐dimensional system with a limit on finite charge density and temperature, which will be used to study the properties of the holographic phase transition to paramagnetism‐ferromagnetism in the presence of Horndeski gravity terms. In our model, the non‐zero charge density is supported by a magnetic field. As a result, the radius indicates a localized condensate, as the Horndeski gravity parameter is increased, that is represented by γ. Furthermore, such condensate shows quantum Hall‐type behavior. This radius is also inversely related to the total action coefficients of our model. It is observed that increasing the Horndeski parameter decreases the critical temperature of the holographic model and leads to the harder formation of the magnetic moment at the bottom of the black hole. However, when removing the magnetic field, the ferromagnetic material presents a disorder of its magnetic moments, which is observed through the entropy of the system. The authors also found that at low temperatures, spontaneous magnetization and ferromagnetic phase transition.

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Section: Introductionmentioning

confidence: 84%

Section: Holographic Paramagnetism/ferromagnetism Phase Transitionmentioning

confidence: 99%

AdS/BCFT Correspondence and Horndeski Gravity in the Presence of Gauge Fields: Holographic Paramagnetism/Ferromagnetism Phase Transition

Santos,

Bravo‐Gaete,

Sokoliuk

et al. 2023

Fortschritte der Physik

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In Situ EXAFS-Based Nanothermometry of Heterodimer Nanocrystals under Induction Heating

et al. 2022

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The ability to heat nanocrystalline materials through magnetic induction has been used in the fields of catalysis, biomedical sciences, and polymer degradation. However, the working temperature to which the inductively coupled material rises is still poorly understood. Herein, we use extended X-ray absorption fine structure spectroscopy in conjunction with thermal imaging to improve the understanding of heating in inductively coupled systems. After extraction of the Debye−Waller factor from the spectroscopy, we obtain the temperature of inductively heated nanocrystals from the correlated Debye model. We combine carbon-supported iron oxide nanocrystals as induction heating agents with platinum nanocrystals as thermal probes. By testing these nanocrystal species as both unattached nanocrystals and heterodimers, we report that nanostructured systems show a significant temperature difference of up to 73.60 °C when compared to their local support environment. This result has implications for inductively heated catalysis, magnetic hyperthermia for targeted cell death, and polymer synthesis.

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Thermodynamics of the System of Noninteracting Free Electrons

Aliev

Dokukin

Samedova

2016

Bulletin of the MSRU (Physics and Mathematics)

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Аннотация. В работе в рамках большого канонического распределения с помощью потенциалов Гиббса проводится детальный анализ термодинамических характеристик ансамбля невзаимодействующих свободных электронов с последующей целью развития модернизированной классической теории сверхпроводимости.

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Magnetic Viscosity

Cited by 3 publications

References 19 publications

AdS/BCFT Correspondence and Horndeski Gravity in the Presence of Gauge Fields: Holographic Paramagnetism/Ferromagnetism Phase Transition

AdS/BCFT Correspondence and Horndeski Gravity in the Presence of Gauge Fields: Holographic Paramagnetism/Ferromagnetism Phase Transition

In Situ EXAFS-Based Nanothermometry of Heterodimer Nanocrystals under Induction Heating

Thermodynamics of the System of Noninteracting Free Electrons

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