@article{oai:nitech.repo.nii.ac.jp:00005002,
 author = {Fukuda, Koichiro},
 issue = {1274},
 journal = {Journal of the Ceramic Society of Japan},
 month = {Oct},
 note = {Lattice deformation in monoclinic Sc_2(MoO_4)_3, induced by both thermal expansion and phase transition, has been investigated by a matrix algebra analysis. From 4 K to 178 K, one of the principal distortions of the monoclinic lattice (λ_1) invariably showed a positive coefficient of thermal expansion, while the other two distortions λ_2 and λ_3 showed nagative thermal expansion in the temperature region of T<55K (λ_2) and T<35K (λ_3). Because of the bidimensional shrinkage along the latter two axes, volumetric contraction occurred below 30 K. The λ_2-axis coincides with the crystallographic b-axis. The intersection angle between the λ_1-axis and the crystallographic c-axis was ～78.8° at 11 K, and it steadily decreased to ～20.1° with in-creasing temperature up to 178 K. The magnitude of lattice deformation nearly along [3^^-02^^-] is negligibly small. Therefore, the lattice deformation induced by the monoclinic-to-orthorhombic phase transition at 178 K was accompanied essentially by bidimensional expansion along [010] and nearly along [2^^-05^^-], the magnitudes of which are, respectively, ～0.6 and ～0.9%., application/pdf},
 pages = {846--850},
 title = {Anisotropic Thermal Expansion and Phase Transition in Sc_2(MoO_4)_3},
 volume = {109},
 year = {2001}
}