Collective Spin Glass State in Nanoscale Particles of Ferrihydrite

Autor:	S. V. Stolyar, V. P. Ladygina, D. A. Balaev, R. N. Yaroslavtsev, Rauf S. Iskhakov, A. I. Pankrats
Rok vydání:	2020
Předmět:	010302 applied physics Materials science Spin glass Gyromagnetic ratio Analytical chemistry Nanoparticle Resonance 02 engineering and technology Atmospheric temperature range 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Ferromagnetic resonance Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Ferrihydrite Magnetic anisotropy 0103 physical sciences 0210 nano-technology
Zdroj:	Semiconductors. 54:1710-1712
ISSN:	1090-6479 1063-7826
Popis:	Ferromagnetic resonance was used to study three types of ferrihydrite nanoparticles: nanoparticles formed as a result of the cultivation of microorganisms Klebsiella oxytoca; chemically prepared ferrihydrite nanoparticles; chemically prepared ferrihydrite nanoparticles doped with Cu. It is established from the ferromagnetic resonance data that the frequency-field dependence (in the temperature range ТP < T < T*) is described by the expression: 2πν/γ = НR + HA(T = 0)(1 – T/Т*), where γ is the gyromagnetic ratio, HR is the resonance field. The induced anisotropy HA is due to the spin-glass state of the near-surface regions. TP temperature characterizes the energy of the interparticle interaction of nanoparticles.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b5ebc82ac4dfe2eca9659885a3adf57c https://doi.org/10.1134/s1063782620120362 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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