Temperature Variation of Saturation Magnetization of Gamma‐Ferric Oxide

Autor:	William Fuller Brown, Clark E. Johnson
Rok vydání:	1962
Předmět:	Condensed matter physics Chemistry Oxide General Physics and Astronomy Function (mathematics) Bohr model chemistry.chemical_compound Magnetization symbols.namesake Atom Moment (physics) symbols Curie temperature Brillouin and Langevin functions
Zdroj:	Journal of Applied Physics. 33:2752-2754
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1702542
Popis:	The temperature variation of the saturation magnetization of a γ‐ferric oxide sample has been interpreted by use of Neel's molecular‐field model, with neglect of A‐A and B‐B interactions. The parameters assumed are: j of the Brillouin function= 52; a net moment of 1.25 Bohr magnetons per iron atom; ratio of the number of atoms on A sites to the number on B sites, 8/(40/3)=3/5. From these parameters the function M/M∞=G(T/θ) was calculated numerically; M=magnetization at temperature T, M∞=magnetization at T=0, θ=Curie temperature. The data fit the theoretical curve very well if θ is assigned the value 1020°K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::92e79b142a1344d9d7f337ad513e692c https://doi.org/10.1063/1.1702542 Zobrazit plný text záznamu