Combining Raman spectroscopy and synchrotron X‐ray diffraction to unveil the order types in A3CaNb2O9 (A = Ba, Sr) complex perovskites

The structural ordering process in complex perovskites has a pivotal role for tuning many physical properties for broad applications, ranging from microwave technology, proton‐conduction, multiferroicity, and so on. Therefore, the characterization of order type in these materials is essential for de...

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