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Makarov V. M. Magnetic and X-ray Studies of Nanodispersed Magnetite Synthesized from Chrome Containing Galvanic Sludge [Електронний ресурс] / V. M. Makarov, S. Z. Kalaeva, I. N. Zakharova, I. A. Nevzorov, M. S. Maltseva, A. M. Shipilin, M. G. Krzhizhanovskaya // Журнал нано- та електронної фізики. - 2015. - Т. 7, № 4. - С. 04010-1-04010-3. - Режим доступу: http://nbuv.gov.ua/UJRN/jnef_2015_7_4_12 In the current work we discuss the processes occurring along with the temperature treatment of the samples of chromium containing sludge. The results of powder X-ray diffraction and vibrational magnetometry show that magnetite forms in the samples with the increase of the calcination temperature higher than <$E500~symbol Р roman C>. Its quantity increases with the heating, which is clearly visible from the value of saturation magnetization obtained for the samples after various temperature treatments.
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