Formation of two-dimensional ordered nanodomains and curious properties of Sr3FeMoO7

摘要

Sr3FeMoO7 is a n = 2 Ruddlesden-Popper analogue of the famous double perovskite Sr2FeMoO6 (SFMO), where every two layers of transition metal BO6 (B = Fe, Mo) octahedral planes are interrupted along the c-direction by a SrO layer. Interestingly, these two-dimensional BO6 layers are found to form many highly ordered Fe-O-Mo flat nanodomains separated by antiphase boundaries (APBs) and the interaction between these disc-like ordered domains give rise to interesting magnetic, transport, and magnetotransport properties, such as large magnetoresistance as well as a strong electroresistance.