Influence of Fe@MnAl₂O₄ and synthesis of novel compound Mn_0.83Fe_0.21Al_1.96O₄

详细信息    查看全文

• 作者：A. Shafiekhani^a ; ^b ; H. SaeidFirozeh^c ; ^{homa_saeidfirozeh@yahoo.com}
• 关键词：Spinel ; Fe&ndash ; Mn&ndash ; Al ; MnAl2O4 ; Nanowire ; X-ray diffraction ; Synthesis
• 刊名：Physica B
• 出版年：2013
• 出版时间：15 July, 2013
• 年：2013
• 卷：421
• 期：Complete
• 页码：122-126
• 全文大小：1796 K

文摘

This communication demonstrates iron substitution in galaxite and the synthesis of a novel composite, Mn_0.83Fe_0.21Al_1.96O₄, by a simple thermal method. Hence, metal powders were heated at 1100 ¡ãC temperature for 72 h. When cooled down gradually to room temperature, the sample delaminated. Interestingly, on the sample surface, microwires were formed as timber shape with a rectangular cross-section (length>150 ¦Ìm and diameter of 5-20 ¦Ìm). Moreover, nanowires (77-97 nm) were observed and the surface of the sample was greenish. However, nanowires (38-53 nm) were observed on the substrate. The crystallinity and average size of the structure were formed increased by substitutions of iron ions. We discovered that the influence of temperature is very important in the wire formation process.