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The Sm$_{0.95}$La$_{0.05}$FeAsO$_{0.85}$F$_{0.15}$ compound is a quasi-2Dlayered superconductor with a superconducting transition temperature T$_c$ = 52K. Due to the Fe spin-orbital related anisotropic exchange coupling(antiferromagnetic or ferromagnetic fluctuation), the tetragonalmicrocrystalline powder can be aligned at room temperature using thefield-rotation method where the tetragonal $\it{ab}$-plane is parallel to thealigned magnetic field B$_{a}$ and $\it{c}$-axis along the rotation axis.Anisotropic superconducting properties with anisotropic diamagnetic ratio$\chi_{c}/\chi_{ab}\sim$ 2.4 + 0.6 was observed from low field susceptibility$\chi$(T) and magnetization M(B$_{a}$). The anisotropic low-field phase diagramwith the variation of lower critical field gives a zero-temperature penetrationdepth $\lambda_{c}$(0) = 280 nm and $\lambda_{ab}$(0) = 120 nm. The magneticfluctuation used for powder alignment at 300 K may be related with the pairingmechanism of superconductivity at lower temperature.

Anisotropic superconducting properties of aligned Sm$_{0.95}$La$_{0.05}$FeAsO$_{0.85}$F$_{0.15}$ microcrystalline powder