Remarkably large field dependences of the thermodynamic and transport properties of PtSn$_{4}$

PtSn$_{4}$ is a known, binary, intermetallic compound that forms as a result of a deeply paritectic reaction. It's reported to have an orthorhombic crystal structure with lattice parameters a = 6.42, b = 11.4, c = 6.39 A. Exceptionally low residual resistivity single crystals of PtSn$_{4}$ have been grown out of excess Sn (with RRR values larger than 1000) and a detailed study of their field dependent properties have been made. The highlights of our results can be summarized as follows: (a) PtSn$_{4}$ manifests a huge, low temperature magnetoresistance of 10$^{5}$ {\%}, for an applied field of 5 T, that rises to 10$^{6}$ {\%} for 14 T; (b) PtSn4 manifests dramatic and clearly resolved oscillations in the magnetization that, for fields below 7T, can be clearly resolved for temperatures as high as 20 K; (c) PtSn$_{4}$ manifests dramatic and clear oscillations in electrical resistivity, that for fields below 14 T, can be clearly resolved for temperatures as high as 10 K.