Spin glass behavior in A-site ordered YBaMn₂O₆ compound

Magnetic properties of the A-site ordered YBaMn₂O₆ compound have been investigated by dc magnetic measurements. The divergence between zero-field-cooled and field-cooled susceptibilities at about 45 K suggests the presence of a spin-glass-like behavior. Thermal remnant magnetization, isothermal remnant magnetization, and memory effect measurements reveal the time relaxation of magnetization below 45 K, confirming the spin glass feature of the YBaMn₂O₆ sample. Detailed x-ray diffraction analysis demonstrates the existence of local antisite disorder on the ordered A sites, which might be the origin of the spin-glass behavior in the compound.