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Mazurek, M.
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- 2013Structure And Hyperfine Interactions Of Multiferroic Bi<inf>m+1</inf>Ti<inf>3</inf>Fe<inf>m-3</inf>o<inf>3m+3</inf> Ceramics Prepared By Mechanical Activation
- 2010Structure and hyperfine interactions of Bi <inf>9</inf> Ti <inf>3</inf> Fe <inf>5</inf> O <inf>27</inf> multiferroic ceramic prepared by sintering and mechanical alloying methodscitations
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article
Structure And Hyperfine Interactions Of Multiferroic Bi<inf>m+1</inf>Ti<inf>3</inf>Fe<inf>m-3</inf>o<inf>3m+3</inf> Ceramics Prepared By Mechanical Activation
Abstract
<p>The structure and hyperfine interactions in the Bi<sub>5</sub>Ti<sub>3</sub>FeO<sub>15</sub>, Bi<sub>6</sub>Ti<sub>3</sub>Fe<sub>2</sub>O<sub>18</sub> and Bi<sub>7</sub>Ti<sub>3</sub>Fe<sub>3</sub>O<sub>21</sub> multiferroic ceramics were studied using X-ray diffraction and Mössbauer spectroscopy. Samples were prepared by mechanical activation process in a high-energy ball mill from a mixture of TiO<sub>2</sub>, Fe<sub>2</sub>O<sub>3</sub> and Bi<sub>2</sub>O<sub>3</sub> oxides as polycrystalline precursor materials. The mechanical milling process was completed by thermal processing. A pure single-phased material was obtained in the case of Bi<sub>7</sub>Ti<sub>3</sub>Fe<sub>3</sub>O<sub>21</sub> compound. The proposed mechanical activation technology allows to produce the Aurivillius compounds at lower temperature, by about 50K, as compared to the solid-state sintering method.</p>