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Single crystals of molybdenum doped VO 2 with the formula V 1−x Mo x O 2 have been successfully synthesized with molybdenum compositions up to x = 0.60. These crystals were obtained using a novel, two-step chemical vapor transport (CVT) synthesis. The first CVT reaction uses a stoichiometric amount of VO 2 , V 2 O 3 , MoO 2 , and MoO 3 with MoCl 3 as a transport agent to produce a largely polycrystalline, single phase V 1−x Mo x O 2 product. This product can then be pulverized and used in a second CVT reaction with TeCl 4 as a transport agent to produce large single crystals. This two-step synthetic method results in larger single crystals with a higher degree of compositional control compared to any single step CVT syntheses attempted, as well as allowing for an increase in dopant range compared to what had previously been achieved for this dopant system. Crystals obtained from this synthetic method are ideal for physical property measurements and diffuse scattering experiments which require large samples to be able to properly mount the samples and obtain useful data.

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