论文标题

BA2MNTEO6的三维结构的中子衍射证据以及对面部为中心的立方晶格内三角形层的错误识别

Neutron diffraction evidence of the 3-dimensional structure of Ba2MnTeO6 and misidentification of the triangular layers within the face-centred cubic lattice

论文作者

Mustonen, Otto H. J., Pughe, Charlotte E., Walker, Helen C., Mutch, Heather M., Stenning, Gavin B. G., Coomer, Fiona C., Cussen, Edmund J.

论文摘要

首先使用X射线衍射对BA2MNTEO6进行表征,并报告显示出对理想的立方钙钛矿的小变形1,该钙岩显示了MN2+的面部中心的立方排列。最近的一份报告断言,这导致了MN2+的分层配置,它是三角形晶格的一个例子,即包含谨慎层的2D结构。2这里,我们在这里表明,中子散射如何使建立晶体结构是一种不及时的晶体相结构,并且是一种不及时的立方相结构,并且如何将其误导为层次的结构。这对理解系统的磁性具有深远的影响。

Ba2MnTeO6 was first characterised using X-ray diffraction and reported to show a small distortion1 from the idealised cubic perovskite which displays face-centred cubic arrangement of Mn2+. A recent report has asserted that this leads to a layered configuration of Mn2+ that serves as an example of a triangular lattice, i.e. a 2D structure containing discreet layers.2 Here we show how neutron scattering gives great confidence in establishing the crystal structure being an undistorted cubic phase and how this can be mis-assigned as a triangular layered structure. This has profound implications for the understanding of the magnetic properties of the system.

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