mu SR investigation of magnetic properties of Y2Cu2O5 has been perform
ed in the temperature range 4.2-30 K. Besides the known magnetic phase
transition at T-N1 = 13 K the peculiarity in the temperature dependen
ce of the local magnetic field on muon was observed near T-N2 = 7.5 K.
The applying of a small external magnetic field of 50 Oe leads to sme
aring of this peculiarity.