RMnO3like

RMnO3like refers to a class of perovskite oxide materials with a chemical formula structure analogous to that of the rare-earth manganites (RMnO3). In this general formula, 'R' represents a rare-earth element or another trivalent cation, and 'Mn' denotes manganese, typically in the +3 oxidation state, which forms the B-site of the perovskite structure. The oxygen atoms complete the ABO3 perovskite framework.

These materials are of significant interest due to their diverse and often complex physical properties, which are strongly influenced by the specific choice of the 'R' element. Properties such as colossal magnetoresistance (CMR), ferroelectricity, multiferroicity, and various magnetic ordering phenomena are commonly observed in RMnO3like compounds. The interplay between electronic, magnetic, and structural degrees of freedom is a key factor in these emergent behaviors.

The structural distortions from the ideal cubic perovskite are particularly important. For instance, the presence of smaller or larger R-site cations can lead to rotations and tilts of the MnO6 octahedra, altering the Mn-O-Mn bond angles and distances. These structural variations directly impact the electronic band structure and the magnetic exchange interactions, thereby dictating the macroscopic properties. Research in this area aims to understand and tune these properties for potential applications in electronics, sensors, and spintronic devices. The vast compositional space offered by varying the R-site cation allows for the exploration of a wide range of physical phenomena.