Inhomogeneous phase separation and domain wall dynamics in orthorhombically distorted La0.87MnOx

K De, S Majumdar, S Giri
2007 Journal of Physics: Condensed Matter  
We observe the interesting magnetization and resistivity results in the orthorhombically distorted self doped manganite, La_0.87MnO_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
more » ... t 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.
doi:10.1088/0953-8984/19/9/096205 fatcat:yppkpevzizc3ljv2rj2kdovtie