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MOSSBAUER SPECTROSCOPY AND MAGNETIC STUDIES OF NANOCRYSTALLINE IRON PRODUCED BY MILLING IN AN ARGON ATMOSPHEREстатья
- Авторы: Elsukov E.P., Dorofeev G.A., Ul'yanov A.I., Zagainov A.V., Maratkanova A.N.
- Журнал: The Physics of Metals and Metallography
- Том: 91
- Номер: 3
- Год издания: 2001
- Первая страница: 258
- Последняя страница: 265
- Аннотация: Mössbauer and Auger electron spectroscopies, X-ray diffraction analysis, and magnetic measurements were used to study the properties of nanocrystalline iron produced by milling in an inert atmosphere in a planetary ball mill. The transition to the nanocrystalline state with an average grain size of ∼ 10 nm was found to be accompanied by neither changes in the specific magnetization saturation and temperature dependences of the magnetic susceptibility nor the formation of an additional sextet in the Mossbauer spectrum. Slight variations of the bcc-lattice parameter and the widths of the Mössbauer spectrum peaks (∼20%) are observed, whereas parameters such as the hyperfine magnetic field, isomeric shift, and quadrupole splitting remain unchanged. The coercive force was found to show nonmonotonic variations with changing time of milling.
- Добавил в систему: Дорофеев Геннадий Алексеевич