Samples were cut and polished into cuboid geometries with typical dimensions of 0.8 mm by 0.6 mm by 0.2 mm. The composition of the crystals was determined using an Oxford instruments EDS system built into a JEOL JSM-6060OLV scanning electron microscope (SEM) operating at 20 keV, and the resultant data analysis using the Aztec software from Oxford Instruments (Figure ). Electrical properties of the crystals were determined using a five-point Hall-bar geometry with Dupont silverepoxy contacts annealed onto the bars allow Hall effect and resistivity measurements concurrently.