Photoinduced magnetic behavior of the amorphous metallic spin glass material Fe3(GaTe3)2

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Abstract
A new ternary material Fe3(GaTe3)2 is prepared by using a rapid precipitation metathesis reaction between the Zintl material K3GaTe3 and FeCl2 in aqueous solution. The dc specific resistivity of this material is in the boundary expected for metallic conductors (ρ=4.36×10−3 Ω cm). The dc magnetic susceptibility of Fe3(GaTe3)2 is reported over 6–250 K temperature region and the material is characterized as a spin glass with a freezing temperature of about 22 K. Magnetization data are also reported as both thermal remanent magnetization and isothermal remanent magnetization as a function of magnetizing field. When cooled well below the spin glass freezing temperature, the spin glass material has been observed to exhibit photomagnetic effects consistent with a disruption of the spin glass state caused by UV radiation.