  We observe the interesting magnetization and resistivity results in the
orthorhombically distorted self doped manganite, La_{0.87}MnO_x. A significant
irreversibility between zero-field-cooled and field-cooled resistivities as
well as magnetization data is clearly observed up to a temperature which is
well above the both paramagnetic to ferromagnetic (T_c) and metal to insulator
transition (T_{MI}) temperatures. In the ferromagnetically ordered and metallic
states the magnetotransport results suggest the influence of domain wall
dynamics. Interesting scenario of memory effects through the domain wall
dynamics is strikingly observed in the relaxation of resistivity in a limited
temperature region. The characteristic features of magnetotransport behaviour
are suggested duo to the co-existence of structurally driven inhomogeneous
phase separation and domain wall dynamics.
