The influence of nitrogen on the paramagnetic properties of the multicomponent d-element iron-based alloy

• Published in: Solid state communications Vol. 90; no. 2; pp. 109 - 113
• Main Authors: Shanina, B.D., Kolesnik, S.P., Konchytz, A.A., Gavriljuk, V.G., Smouk, S.Yu, Tarasenko, A.V.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.04.1994; Elsevier
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Diamagnetism, paramagnetism and superparamagnetism; Exact sciences and technology; Magnetic properties and materials; Metals and alloys; Metals. Metallurgy; Physics; Temperature dependence; Electronic structure; Interstitials; Paramagnetism; Surfaces; Nitrogen additions; Chemical composition; Electron density; Surface states; Iron base alloys
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/0038-1098(94)90941-5

The influence of the nonmagnetic interstitial solute (nitrogen) on the paramagnetic properties of the multicomponent iron-based alloy was studied. The spin resonance measurements have shown that the increase of the Mn content in the austenitic alloy leads to a decrease of the electron state density on the Fermi surface, D F, up to two orders of magnitude and to the large shift of the g-factor, Δg > 0. The character of the temperature dependence of the g-factor gives an evidence for clusterization of the d-element atoms with ferromagnetic interaction. The increase of the state density on the Fermi surface as the interstitial solute content grows was confirmed for nitrogen concentrations 1% < C N < 1.5% and it was found that D F decreases smoothly at the nitrogen contents C N > 1.5%. It was found that nitrogen content affects the process of formation of the d-element clusters as well. лзukhcyc;нo влияниc; нc;мaгнитнoй пpимc;cи внc;цpc;ния (aзoтa) нa пapaмaгнитныc; cвoйcтвa мnycoгoкoмпoнc;нтнoгo cплaвa нa ocnycoвc; жc;лc;зa. Измc;pc;nycия cпинoвoгo pc;зoнaнca пoкaзaли, khcyтo в aucтc;nycитнoм cплaвc; uвc;лиkhcyc;ниc; кoнцc;нтpaции Mn вc;дc;т к uмc;ньшc;нию плoтнoти элoтнocти элc;ктpoнныч cocтoяний нa пoвc;pчнocти Фc;pми нa двa пopядкa, a тaкжc; к бoльшoмu g-фaктopa Δg>0. Измc;нc;нe;c; g-фaктopa c pocтoм тc;мпc;paтupы cвидc;тc;льcтвuc;т o клacтc;pизaции d-элc;мc;нтoв c фc;ppoмoгнитным взaимoдc;йcтвиc;м. Пoдтвc;pждc;нo uвc;лиkhcyc;ниc; пдoтнocти cocтoяний нa пoвc;pчнoти Фc;pми D F c pocтoм кoнцc;нтpaции aзoтa в oблacтa кoнцc;нтpaций 1% < C N < 1.5% и oбнapuжc;нo, khcyтo D F мoнoтoннo uмc;ньшac;тcя пpи coдc;pжaнияч ac;oтa C N > 1.5%. oбнapuжc;нo тaкжc; влияниc; кoнцc;нтpaции aзoтa нa пpoцc;cc oбpaзoвaния клacтc;poв d-ecy;лc;мc;нтoв.