μ+SR study of vacancies in thermal equilibrium in ferromagnets

Autor:	M. Schmolz, Alfred Seeger, J. Major, L. Schimmele, M. Gladisch, D. Herlach, N. Haas, H. J. Mundinger, K. P. Döring, J. Rosenkranz, W. Schwarz, K. Fürderer, W. Schäfer
Rok vydání:	1986
Předmět:	Thermal equilibrium Nuclear and High Energy Physics Muon Condensed matter physics Chemistry Enthalpy chemistry.chemical_element Trapping Muon spin spectroscopy Condensed Matter Physics Atomic and Molecular Physics and Optics Ferromagnetism Vacancy defect Physical and Theoretical Chemistry Cobalt
Zdroj:	Hyperfine Interactions. 31:81-86
ISSN:	1572-9540 0304-3843
DOI:	10.1007/bf02401543
Popis:	Muon spin precession frequencies and transverse relaxation rates have been measured on demagnetized iron, cobalt, and FeCo alloys (3 at%–50 at% Co) between room temperature and the Curie temperatureT c. The increase of the relaxation rate in iron between 930 K and 1010 K could be quantitatively attributed to the trapping of positive muons by vacancies in thermal equilibrium, resulting in an enthalpy of monovacancy formation ofH 1V F =(1.7±0.1) eV. the smallest vacancy concentrations detected are = 10−8.
Databáze:	OpenAIRE
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