n spin ice materials like Ho2Ti2O7 and Dy2Ti2O7 [1] the Ising-like rare earth spins which lie along the local axis are analogous to hydrogen displacement vectors in water ice. Spin ice has been found to show several interesting properties in applied magnetic field, including liquid-gas type transitions, a so-called Kasteleyn transition and a giant entropy spike (see [2], for example). Nd2Zr2O7, synthesized and supplied to us by Tokura and Onose of the RIKEN, Advanced Science Institute, may be a new frustrated pyrochlore. Like Ho2Ti2O7 and Dy2Ti2O7 it is a pyrochlore, an electrical insulator and contains only one magnetic species, Nd3+. We believe we have the only crystal in existence of this since the temperatures required to grow them are very high.Nd2Zr2O7 shares many characteristics with the spin ice material but orders at low temperature, we want to find the ordered state.