Specific heat of the Fe0.50Ni0.35Mn0.15 “Invar” alloy

The Invar alloy Fe0.50Ni0.35Mn0.15 exhibits a reentrant ferromagnetic behavior, with a Curie temperature of 208 K and a spin glass freezing temperature of 59 K, as determined from ac susceptibility measurements. Its specific heat has been measured in the temperature range 5 to 110 K. The large linea...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 1988-02, Vol.71 (3), p.318-322
Hauptverfasser:	Lecomte, G.V., Schubert, N., Wassermann, E.F.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Critical-point effects, specific heats, short-range order Cross-disciplinary physics: materials science rheology Exact sciences and technology Magnetic properties and materials Materials science Metals, semimetals and alloys Other topics in magnetic properties and materials Physics Specific materials
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Beschreibung
Zusammenfassung:	The Invar alloy Fe0.50Ni0.35Mn0.15 exhibits a reentrant ferromagnetic behavior, with a Curie temperature of 208 K and a spin glass freezing temperature of 59 K, as determined from ac susceptibility measurements. Its specific heat has been measured in the temperature range 5 to 110 K. The large linear term found at low temperature is shown to be caused mainly by magnetic low energy excitations associated with the spin glass state. This magnetic contribution presents a flat maximum in the vicinity of 100 K.
ISSN:	0304-8853
DOI:	10.1016/0304-8853(88)90011-X