Moessbauer and SANS Studies of Anti-Invar Fe-Ni-C Alloy under Magnetic Field

Anti-Invar effect in the f.c.c.-Fe-25.3%Ni-C alloy was revealed, i.e., enhanced thermal expansion coefficient (TEC)({approx}20x10{sup -6} K{sup -1}) which was accompanied by almost temperature-insensitive behavior in a temperature range of 122-525 K that was considerably expanded to the low temperat...

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Veröffentlicht in:	AIP conference proceedings 2010-07, Vol.1258 (1)
Hauptverfasser:	Nadutov, V. M., Kosintsev, S. G., Svystunov, Ye. O., Garamus, V. M., Willumeit, R., Eckerlebe, H., Ericsson, T., Annersten, H.
Format:	Artikel
Sprache:	eng
Schlagworte:	ALLOYS ANTIFERROMAGNETIC MATERIALS BARYONS BOSONS CHEMICAL ANALYSIS COHERENT SCATTERING CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CRYSTAL LATTICES CRYSTAL STRUCTURE CUBIC LATTICES DIFFRACTION ELEMENTARY PARTICLES EXPANSION FCC LATTICES FERMIONS HADRONS INVAR IRON ALLOYS IRON BASE ALLOYS KAONS KAONS MINUS MAGNETIC FIELDS MAGNETIC MATERIALS MATERIALS MATERIALS SCIENCE MESONS MOESSBAUER EFFECT NEUTRON DIFFRACTION NEUTRONS NICKEL ALLOYS NONDESTRUCTIVE ANALYSIS NUCLEONS PEARLITE PSEUDOSCALAR MESONS SCATTERING SMALL ANGLE SCATTERING STRANGE MESONS STRANGE PARTICLES TEMPERATURE DEPENDENCE THERMAL EXPANSION TRANSITION ELEMENT ALLOYS X-RAY EMISSION ANALYSIS X-RAY FLUORESCENCE ANALYSIS
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Zusammenfassung:	Anti-Invar effect in the f.c.c.-Fe-25.3%Ni-C alloy was revealed, i.e., enhanced thermal expansion coefficient (TEC)({approx}20x10{sup -6} K{sup -1}) which was accompanied by almost temperature-insensitive behavior in a temperature range of 122-525 K that was considerably expanded to the low temperature range due to alloying with carbon. The Moessbauer and small-angle neutron scattering (SANS) experiments with the varying temperature and in an external magnetic field of 1.5-5 T have revealed an existence of inhomogeneous magnetic order in anti-Invar alloy below and above the magnetic transition point. The anti-Invar behavior correlates with the thermally induced change in the magnetic order and interspin interaction.
ISSN:	0094-243X 1551-7616
DOI:	10.1063/1.3473897