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Mechanochemically induced amorphous/crystalline phase transition in the Bi4Ti3O12 compound |
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| Authors: | Miodrag Zduji? ?edomir Jovaleki? Ivana Veljkovi? |
| Affiliation: | a Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Belgrade, Serbia b Institute for Multidisciplinary Research, Belgrade, Serbia c Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia d Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia |
| Abstract: | Concurrent milling of Bi4Ti3O12 was carried out in a planetary ball mill with hardened-steel 13 or 6 mm diameter balls with a goal to investigate how the system responds to the constrains imposed by milling. Milling intensity for various milling parameters was derived from the electrical power measurement. The reverse amorphous ↔ crystalline phase transition induced by milling is governed by impact energy and frequency. Below a certain threshold value of impact energy crystallization does not occur, whereas a higher impact frequency accelerates amorphization. Mechanochemical reactions are predominantly discrete processes, which occur at the moment of impact. |
| Keywords: | Mechanochemistry Ferroelectrics X-ray techniques |
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