Magnetic and X-ray Studies of Nanodispersed Magnetite Synthesized from Chrome Containing Galvanic Sludge

Authors	V.M. Makarov¹ , S.Z. Kalaeva¹ , I.N. Zakharova¹, I.A. Nevzorov¹, M.S. Maltseva¹, A.M. Shipilin² , M.G. Krzhizhanovskaya³
Affiliations	¹ Yaroslavl State Technical University, 88, Moskovskij Prosp., 150053 Yaroslavl, Russia ² M.V. Lomonosov Moscow State University, 1, Leninskiye Gory, 119991 Moscow, Russia ³ Saint-Petersburg State University, 7-9, University Emb., 199034 St. Petersburg, Russia
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Issue	Volume 7, Year 2015, Number 4
Dates	Received 28 September 2015; published online 10 December 2015
Citation	V.M. Makarov, S.Z. Kalaeva, I.N. Zakharova, et al., J. Nano- Electron. Phys. 7 No 4, 04010 (2015)
DOI
PACS Number(s)	82.45.Aa. 82.80.Ej
Keywords	Magnetite (6) , Electrocoagulation, Calcination temperature, Powder XRD (2) , Magnetization (18) .
Annotation	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 500 °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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