Magnetic particle–particle interaction in frozen magnetic fluids

Autor:	A. R. Pereira, F.A. Tourinho, Fernando Pelegrini, M. C. F. L. Lara, A.L. Tronconi, Paulo C. Morais
Rok vydání:	1996
Předmět:	Range (particle radiation) Magnetization Fermi contact interaction Condensed matter physics Chemistry General Physics and Astronomy Particle Magnetic pressure Interaction energy Magnetic particle inspection Magnetic dipole
Zdroj:	Journal of Applied Physics. 79:7931-7935
ISSN:	1089-7550 0021-8979
Popis:	Magnetic resonance is used to study magnetic dipole particle–particle interaction in ionic water‐based iron‐manganese magnetic fluids. A set of six samples having particle concentration running from 1.2×1016 to 6.3×1016 particles/cm3 were frozen below room temperature and analyzed in the range of 100–250 K. Average values of magnetic particle–particle interaction energy were obtained from the temperature dependence of the resonance linewidth broadening. At 1.2×1016 particles/cm3 magnetic particle–particle interaction energy is found to be of the order of 1.2 meV. However, at 6.3×1016 particles/cm3 magnetic particle–particle interaction energy goes to 32 meV. The enhancement of the magnetic particle–particle interaction energy far beyond the linearity is associated to cluster structuration. A one‐dimensional model for cluster structuration is presented.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e55ad9f45951a30e4f374daded19d698 https://doi.org/10.1063/1.362407 Zobrazit plný text záznamu