@article{2153a9cf0bb3488b9dc1b8f72098eaf9,
title = "Enhanced thermoelectric properties of bulk TiNiSn via formation of a TiNi 2Sn second phase",
abstract = "The effect of phase-segregated Heusler TiNi 2 Sn on high temperature thermoelectric properties of bulk half-Heusler TiNiSn has been studied. In samples expressed by the composition TiNi 1+x Sn, a significant decrease in thermal conductivity (between 10% and 30%) is observed for two-phase TiNi 1.15 Sn, despite the second-phase particles existing at the micrometer scale; a 50 increase in the electrical conductivity is also measured. These result in a maximum figure of merit, ZT, of 0.44 at 800 K, which is 25% greater than is observed for the x = 0 sample. Density functional calculations of TiNiSn and TiNi 2 Sn suggest that the latter should deplete carriers at 0 K.",
author = "Douglas, {Jason E.} and Birkel, {Christina S.} and Miao, {Mao Sheng} and Torbet, {Chris J.} and Stucky, {Galen D.} and Pollock, {Tresa M.} and Ram Seshadri",
note = "Funding Information: This work was supported by the MRSEC Program of the National Science Foundation through DMR-1121053. J.E.D. was supported by the ConvEne IGERT Program (NSF-DGE 0801627). C.S.B. is a recipient of the Feodor Lynen Research Fellowship of the Alexander von Humboldt foundation. Professor Ted Bennett and Raymond Valdes are gratefully acknowledged for allowing use of and training for FlashLine measurements. Support from the Center for Scientific Computing from the CNSI, MRL: an NSF MRSEC (DMR-1121053) and Hewlett Packard is also acknowledged. This work made use of central facilities of the Materials Research Laboratory, supported by the MRSEC Program (DMR-1121053). The Materials Research Laboratory is a member of the NSF-supported Materials Research Facilities Network.",
year = "2012",
month = oct,
day = "29",
doi = "10.1063/1.4765358",
language = "English (US)",
volume = "101",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "18",
}