Crystal growth and negative thermal expansion properties of a Y2Mo4O15 single crystal† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3ra01320k

ABSTRACT: A bulk-size single crystal of Y2Mo4O15 with 20 × 11 × 8 mm3 was successfully grown by the top-seed solution growth (TSSG) method. The full-width at half maximum of (100) and (010) crystal faces is 37 and 27 arcsec, respectively. The thermal conductivity coefficients κ11, κ22, κ33, and κ13 are determined to be 1.519, 2.097, 0.445, and 0.997 W m−1 K−1, respectively. It is worth noting that the Y2Mo4O15 crystal shows significant anisotropy thermal expansion properties, which exhibits a negative thermal expansion along the b-axis (α22 = −5.11 × 10−6 K−1). The crystal structure analysis shows that the shrinking of Mo–O bond lengths along the b-axis with the increasing temperature would be the main origin of the negative thermal expansion properties for Y2Mo4O15 crystal, which does not comply wi

SUBMITTER: Rong W 

PROVIDER: S-EPMC10132451 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature