ELECTRON MICROSCOPY OF ORTHORHOMBIC PHASE IN MAGNETITE
ELECTRON MICROSCOPY OF ORTHORHOMBIC PHASE IN MAGNETITE
复制标题
磁铁矿中斜方相的电子显微镜
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
S. Chikazumi
中科院分区：
文献类型：
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作者：
Toshiro Yamada;Kunio Suzuki;S. Chikazumi
在77°K ~室温范围内对人工合成的磁铁矿单晶进行了电子显微镜观察。观察到低温转变以下的有序相表现为精细分割的条纹。其中一个条纹中的衍射图案显示出额外的斑点，例如立方指数的（00 1/2）、（100）、（010）或（11 1/2）。这表明低温相的晶胞应该是Verwey提出的晶胞的两倍大。提出的排序方案应该比Verwey顺序更复杂。
An electron microscopic observation on a synthetic single crystal of magnetite has been carried out at a temperature range between 77°K and room temperature. It was observed that the ordered phases below the low‐temperature transition appear as finely divided stripes. The diffraction patterns in one of the stripes show the extra spots such as (00½), (100), (010), or (11½) in cubic indices. This indicates that the unit cell of the low‐temperature phase should be twice as large as that proposed by Verwey. The ordering scheme proposed should be more complicated than the Verwey order.