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The role of demagnetization factor in determining the 'true' value of the Curie temperature

TitleThe role of demagnetization factor in determining the 'true' value of the Curie temperature
Publication TypeJournal Article
Year of Publication2011
AuthorsZverev VI, Gimaev RR, Tishin AM, Mudryk Y, Gschneidner KA, Pecharsky VK
Journal TitleJournal of Magnetism and Magnetic Materials
Volume323
Pages2453-2457
Date Published10
ISBN Number0304-8853
Accession NumberISI:000291852200006
Keywordscurie temperature, demagnetization effect, ferromagnetism
Abstract

The Curie temperature, T-C, is the temperature above which a material loses its long-range ferromagnetic order. Considering the equation of state of a ferromagnet in the mean-field approximation it has been shown theoretically that the value of the demagnetization factor N has a significant influence on the perceived location of T-C on the temperature scale. A series of precise measurements of magnetization using two differently shaped single crystals of high-purity gadolinium was carried out to prove this result experimentally and develop a procedure leading to the 'true' value of T-C. (C) 2011 Elsevier B.V. All rights reserved.
URL<Go to ISI>://000291852200006
DOI10.1016/j.jmmm.2011.05.012
Alternate JournalJ Magn Magn MaterJ Magn Magn Mater