The structural, magnetic, and thermodynamic properties of a new plutonium based compound, Pu2Pt3Si5, are reported. Single crystals produced by a Sn-flux technique have been analyzed showing a ferromagnetic behavior at 58 K. Pu2Pt3Si5 crystallizes in the U2Co3Si5-type orthorhombic Iabm structure (72) with atomic parameters a = 9.9226(2) \AA, b = 11.4436(2) \AA and c = 6.0148(1) \AA. The effective (\mu_eff ~0.74 \mu_B) and saturated (\mu_sat ~0.32 B/Pu) moments as well as the Sommerfeld coefficient (\gamma_e ~2 mJ.mol-1.K-2/Pu) could point towards 5f localization in this material.
@article{arxiv.1312.1576,
title = {Magnetic properties of ferromagnetic Pu2Pt3Si5},
author = {J. -C. Griveau and E. Colineau and D. Bouëxiere and K. Gofryk and T. Klimczuk and J. Rebizant},
journal= {arXiv preprint arXiv:1312.1576},
year = {2013}
}