Imaging of variation in charge/orbital/spin ordering structure in Sm1-xSrxMnO3 (x=0.55 and 0.6).

Imaging of charge/orbital ordering (CO/OO) structure and canted antiferromagnetic (AFM) domain structure in Sm1-xSrxMnO3 (x=0.55 and 0.6) has successfully been demonstrated. In the x=0.55 compound, the commensurate CO/OO structure with modulation vector Q=(0,1/3,0) was observed above the AFM transition temperature (TNA∼180 K). This modulation structure changes to an incommensurate one below TNA. In the x=0.6 compound, the typical 180° magnetic domains were observed in the (110) plane below 50 K indicating the canted AFM structure. This AFM structure locally collapses because of the existence of the short-range CO. [ABSTRACT FROM AUTHOR]