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Titolo:
EXCHANGE INTERACTION BETWEEN ELECTRON SUBSYSTEMS IN IRON-BASED FCC ALLOYS DOPED BY NITROGEN OR CARBON
Autore:
SHANINA BD; GAVRILYUK VG; KONCHITS AA; KOLESNIK SP; TARASENKO AV;
Indirizzi:
INST SEMICOND PHYS KIEV 252028 UKRAINE UKRAINIAN ACAD SCI,INST MET PHYS KIEV 252142 UKRAINE
Titolo Testata:
Physica status solidi. a, Applied research
fascicolo: 2, volume: 149, anno: 1995,
pagine: 711 - 722
SICI:
0031-8965(1995)149:2<711:EIBESI>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPIN-RESONANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
B.D. Shanina et al., "EXCHANGE INTERACTION BETWEEN ELECTRON SUBSYSTEMS IN IRON-BASED FCC ALLOYS DOPED BY NITROGEN OR CARBON", Physica status solidi. a, Applied research, 149(2), 1995, pp. 711-722

Abstract

The effect of nitrogen and carbon on the electronic and magnetic properties of the iron-base Fe56Cr18Ni16Mn10 3d-alloy with f.c.c. lattice (austenite) is studied by means of the magnetic resonance. It is shownthat the electron state density on the Fermi surface in the nitrogen austenite is one order of magnitude higher than that in the carbon one. Based on measurements of the temperature dependence of the g-factor the existence of superparamagnetic clusters is stated, the latter being obviously clusters of substitutional solutes. Signs and values of the exchange interaction between conduction electrons and other magneticsubsystems are obtained from the analysis of the temperature dependence of the paramagnetic susceptibilities. The exchange interaction between conduction electrons and isolated localised spins has antiferromagnetic character, while conduction electron-cluster interaction is ferromagnetic. The size of the clusters is markedly higher in the carbon austenite. This difference in structural homogeneity can be used for anexplanation of the higher thermodynamic stability of the nitrogen austenite as compared to the carbon one.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 01:28:05