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首页> 外文期刊>Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties >Transmission electron microscopy for research of new layered oxides: study of the Bi-Sr-Fe-O system
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Transmission electron microscopy for research of new layered oxides: study of the Bi-Sr-Fe-O system

机译：透射电子显微镜用于研究新的层状氧化物：Bi-Sr-Fe-O系统的研究

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The Bi-Sr-Fe-O system has been revisited by transmission electron microscopy techniques. Three new layered oxides have been isolated and characterized. The first two oxides, Bi0.82Sr2.92FeO6-delta and Bi0.38Sr2.54Fe1.08O5-delta, exhibit a 2201- and a 1201-type structure respectively, related to superconducting cuprates. Both oxides are characterized by mixed layers with a 1/1 ordering between Bi and Sr species. The transition from 2201 structure to 1201 structure occurs through a complex intergrowth mechanism and leads to an intermediate structure, formulated as Bi1.21Sr5.12FeO11-delta. It corresponds to a regular stacking between the; 1201 motif and the 2201 motif. These results are discussed in comparison with those previously obtained for the Bi-Sr-M-O systems (M = Cu, Mn or Co). [References: 28]
机译：Bi-Sr-Fe-O系统已经通过透射电子显微镜技术进行了重新研究。已经分离并表征了三种新的层状氧化物。前两个氧化物Bi0.82Sr2.92FeO6-delta和Bi0.38Sr2.54Fe1.08O5-delta分别具有2201和1201型结构，与超导铜酸盐有关。两种氧化物的特征在于Bi和Sr物种之间具有1/1顺序的混合层。从2201结构到1201结构的转变是通过复杂的共生机制发生的，并导致形成中间结构，称为Bi1.21Sr5.12FeO11-δ。它对应于之间的规则堆叠; 1201主题和2201主题。将这些结果与以前从Bi-Sr-M-O系统（M = Cu，Mn或Co）获得的结果进行比较。 [参考：28]

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