The structural, magnetic and transport properties of stripe ordered La5/3Sr1/3NiO4 nanoparticles synthesized by the sol-gel method were investigated. Compared with the bulk sample, it is found that the charge order is weakened in the nanosized particles. Accompanied by the disappearance of the antiferromagnetic spin-ordered state, a ferromagnetic-like phase emerges at similar to 23 K. Furthermore, the spin glass/spin reorientation transition temperature T-CA for the similar to 100 nm particles is similar to 65 K which is similar to 12 K higher than that of the bulk. This suggests that instead of the stabilization of charge order, the Structural disorder may have a dramatic effect oil the complex magnetic transition in the stripe phase systems.
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