Аннотация:
We report on the orientation of the order parameter in the A-like and B-like phases of superfluid $^3$He immersed in uniaxially-compressed aerogel. By NMR methods we find that the orbital momentum of the A- and B-like phases is oriented along the deformation. In the A-like phase we observe a relatively narrow NMR line with an anomalously large negative frequency shift. We have succeeded in measuring the Leggett frequency in the A-like phase which shows the same energy gap suppression as in the B-like phase.