Methods for estimating Curie temperatures of titanomaghemites from experimental Js-T data

Research output: Contribution to journalArticle

85 Scopus citations


Methods for determining the Curie temperature (Tc) of titanomaghemites from experimental saturation magnetization-temperature (Js-T) data are reviewed. Js-T curves for many submarine basalts and synthetic titanomaghemites are irreversible and determining Curie temperatures from these curves is not a straightforward procedure. Subsequently, differences of sometimes over 100°C in the values of Tc may result just from the method of calculation. Two methods for determining Tc will be discussed: (1) the graphical method, and (2) the extrapolation method. The graphical method is the most common method employed for determining Curie temperatures of submarine basalts and synthetic titanomaghemites. The extrapolation method based on the quantum mechanical and thermodynamic aspects of the temperature variation of saturation magnetization near Tc, although not new to solid state physics, has not been used for estimating Curie temperatures of submarine basalts. The extrapolation method is more objective than the graphical method and uses the actual magnetization data in estimating Tc.

Original languageEnglish (US)
Pages (from-to)84-88
Number of pages5
JournalEarth and Planetary Science Letters
Issue number1
StatePublished - Mar 1981

Fingerprint Dive into the research topics of 'Methods for estimating Curie temperatures of titanomaghemites from experimental J<sub>s</sub>-T data'. Together they form a unique fingerprint.

Cite this