title: Shape-controlled crystal growth of Sr3NbGa3Si2O14 and Sr3TaGa3Si2O14 piezoelectric crystals by the micro-pulling-down method.
abstract: We grew column-shaped Sr(3)NbGa(3)Si(2)O(14) (SNGS) and Sr(3)TaGa(3)Si(2)O(14) (STGS) langasite-type piezoelectric single crystals by the micro-pulling-down (μ-PD) method. 3-mm-diameter SNGS and STGS crystals were grown using a Pt-Rh crucible with a 3-mm-diameter columnar die. According to X-ray rocking curve measurements, the grown crystals had crystallinity equivalent to that of crystals grown by the Czochralski (Cz) method. The crystals were single-phase materials with langasite-type crystal structure. The lattice parameters of the grown crystals were almost consistent with those of crystals grown by the Cz method.
authors.affiliation: Institute for Material Research, Tohoku University, Sendai, Japan. yokota@imr.tohoku.ac.jp
authors.forename: Yuui
authors.initials: Y
authors.lastname: Yokota
authors.forename: Masato
authors.initials: M
authors.lastname: Sato
authors.forename: Yoshisuke
authors.initials: Y
authors.lastname: Futami
authors.forename: Kazushige
authors.initials: K
authors.lastname: Tota
authors.forename: Ko
authors.initials: K
authors.lastname: Onodera
authors.forename: Takayuki
authors.initials: T
authors.lastname: Yanagida
authors.forename: Akira
authors.initials: A
authors.lastname: Yoshikawa