Hydrogen effect on the electronic and structural properties of Nb-Fe alloys

• Autorzy: Brzeska-Michalak B. , Ostrasz A.
• Konferencja: Proceedings of the All-Polish Seminar on Moessbauer Spectroscopy OSSM'2002, June 9-12, 2002, Goniądz, Poland
• Języki publikacji: EN

Abstrakty

EN

The influence of hydrogen on the electronic and structural properties of Nb1-yFey alloys has been studied with 57Fe Mössbauer spectroscopy and X-ray diffraction. No ability of hydrogen to creation of the ferromagnetic properties has been observed in this system. The results clearly indicate the ß-NbH0.85÷0.77 hydride formation in place of ?-Nb phase. The quadrupole splitting and the isomer shift of the ß-NbHx subspectrum have been considered in terms of interaction between the interstitials and the Mössbauer atoms within the hydride phase.

Słowa kluczowe

EN

Mössbauer spectroscopy of 57Fe; iron-niobium alloys; niobium hydrides

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2003
• Tom: Vol. 48,suppl.1
• Strony: 53--57
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Brzeska-Michalak B.

• Institute of Experimental Physics, University of Wrocław, 9 M. Borna Sq., 50-204 Wrocław, Poland, Tel.: [phone], Fax: [phone]

autor

Ostrasz A.

• Institute of Experimental Physics, University of Wrocław, 9 M. Borna Sq., 50-204 Wrocław, Poland, Tel.: [phone], Fax: [phone]

Bibliografia

• 1. Alefeld G, Völkl J (eds) (1978) Hydrogen in metals. I. Springer Verlag, Berlin
• 2. Buschow KHJ, Bouten PC, Miedema AR (1982) Hydrides formed from intermetallic compounds of two transition metals: a special class of ternary alloys. Rep Prog Phys 45:937−1039
• 3. Ostrasz A (1998) Evaluation of the hyperfine magnetic field distribution in hydrogenated Zr-Fe alloys. Phys Status Solidi 209:463−469
• 4. Ostrasz A, Brzeska B (2000) Study of the hydrogen effect on the magnetic transition in Ti-Fe alloys by Mössbauer spectroscopy. Molecular Physics Reports 30:107−112
• 5. Ostrasz A, Szuszkiewicz M (1987) 3d-like electron localization and charge transfer in hydrogenated V-Fe alloys. Phys Status Solidi 139:205−211
• 6. Peisl H (1978) Lattice strains due to hydrogen in metals. In: Alefeld G, Völkl J (eds) Hydrogen in metals. I. Springer Verlag, pp 53−74
• 7. Peterman DJ, Misemer DK, Weaver JH, Peterson DT (1983) Electronic structure of metal hydrides. VI. Photoemission studies and band theory of VH, NbH and TaH. Phys Rev B 27:799−807
• 8. Wagner FE, Wordel R, Zegler M (1984) Influence of interstitial diffusion on the Mössbauer spectra of iron solutes in VD0.78 and NbH0.84. J Phys F 14:535−547