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Spontaneous magnetization related to internal energy in an assembly with long-range interaction: Predicted universal features fingerprints in experimental data from Fe and Ni

AuthorsAyuela, Andrés ; March, Norman H.
KeywordsMaterials Science
Metallic ferromagnets
Spontaneous magnetization
Specific heat
Internal energy
Blume-Emery-Griffiths (BEG) model
Issue Date18-Aug-2008
CitationPhysics Letters A 372(34): 5617-5620 (2008)
AbstractIn recent work we have dealt with antiferromagnetism in materials with long-range interactions. Here, we extend low-temperature theoretical study of Grout and March on metallic ferromagnets. Using experimental data on Fe and Ni on spontaneous magnetization M(T) and specific heat c(T), we relate M(T) and internal energy E(T) for 0<T<TC with TC the Curie temperature. An appropriate plot shows that the experimental data on Fe and Ni then collapse on to a common curve. To gain theoretical insight the Blume–Emery–Griffiths infinite-range model is used to connect M and E. A related “universality” is exposed.
Description4 pages, 4 figures.-- Printed version published on Aug 18, 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.physleta.2008.06.091
Appears in Collections:(CFM) Artículos
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