Magnetic and X-ray diffraction investigation on Mg1-xMn2+xO4 spinels
Magnetic and X-ray diffraction investigation on Mg1-xMn2+xO4 spinels
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DOI：
10.1016/s0038-1098(01)00297-6
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发表时间：
2001-01-01
影响因子：
2.1
通讯作者：
Flor, G
中科院分区：
文献类型：
--
作者：
Azzoni, CB;Mozzati, MC;Flor, G
为了研究 Mg/Mn 比对尖晶石反转的影响，对 0 小于或等于 x 小于或等于 1 的缓慢冷却的 Mg1-xMn2+xO4 固溶体进行了 X 射线粉末衍射、电子顺磁共振和静态磁化强度测量。我们的结果证明，对于 x < 0.5 的样品，在室温下存在较小的转化程度，并表明随着 x 的增加，即通过减少 Mg2+ 含量，转化程度降低。用于定义正确合成和冷却程序的多技术方法能够形成单相高纯度材料。 (C) 2001 Elsevier Science Ltd. 保留所有权利。
X-ray powder diffraction, electron paramagnetic resonance and static magnetisation measurements of slowly cooled Mg1-xMn2+xO4 solid solutions for 0 less than or equal to x less than or equal to 1 have been performed in order to investigate the effects of the Mg/Mn ratio on the spinel inversion. Our results prove that a small inversion degree exists at room temperature for the samples with x < 0.5 and suggest that the inversion decreases with increasing x, that is by reducing the Mg2+ content. The multi-technique approach for the definition of the correct synthetic and cooling procedures enables the formation of single-phase high purity materials. (C) 2001 Elsevier Science Ltd. All rights reserved.