Temperature-induced spin reorientation in orthoferrites (RFeO$_3$) and orthochromites (RCrO$_3$) has recently attracted a lot of attention because of its various potential applications. Spin reorientation in these oxides can be utilized to design functional devices like magnetic switches, magnetic read/write heads, etc.
This work presents the results of spin reorientation and rare-earth ordering in rare-earth orthoferrites and orthochromites. The magnetic structure of different orthoferrrites and orthochromites has been analyzed using neutron diffraction measurements. Role of Fe(Cr)-Fe(Cr), R-Fe(Cr), and R-R exchange interactions is identified to understand the complex magnetic structures.