Disaccommodation in LaMnO3.075

The time dependence of low-field ac susceptibility has been studied on the cation-deficient perovskite manganite LaMnO3.075. It is found that the ac s usceptibility \chi\ decreases with time over a wide temperature range below T-c (122 K) and the decay of \chi\ is roughly proportional to the logarith m of lime after demagnetization. It is argued that the time dependence of \ chi\, or disaccommodation, arises from progressive domain-wall stabilizatio n through induced exchange interaction, as well as induced magnetocrystalli ne anisotropy.