Crystal growth and physical properties of shape-controlled La3Ta0.5Ga5.5O14 single crystals by micro-pulling-down method

LGT (La 3 Ga 5.5 Ta 0.5 O 14 ) langatate bulk crystal grown from the melt by Czochralski technique and characterization

“…LGT by micro-pulling-down method [6], by vertical Bridgman method [7], and by Czochralski method [2,4,8,9]. That the composition of LGT crystals depends significantly on preparation conditions such as a charge preparation, growth atmosphere and growth conditions.…”

Growth of shape-controlled Ce:Y3Al5O12 scintillator crystal and their scintillation properties

“…We have developed growth of shape-controlled single crystals by a micro-pullingdown (-PD) method in order to decrease the manufacturing cost of single crystals [4][5][6][7][8][9]. The -PD method can grow a single crystal by pulling-down the meniscus below the bottom of a crucible which has a die with one or several holes at the bottom.…”

“…The shape-controlled sapphire single crystal showed great crystallinity from initial to end areas [4]. In addition, shape-controlled Ca3NbGa3Si2O14 (CNGS) piezoelectric single crystals were grown by the -PD method using a platinum crucible and columnar, plate or tube-shaped CNGS single crystals could be obtained through only growth, without cutting and polishing [5][6][7][8][9]. The shape-controlled growth method enables to make the crystal elements with the shape close to an element in a final device.…”

Crystal Growth of Ca3Nb(Ga1−xAlx)3Si2O14 Piezoelectric Single Crystals with Various Al Concentrations

“…Ca 3 NbGa 3 Si 2 O 14 (CNGS) single crystal with an ordered langasite-type structure has been investigated as a piezoelectric material for some applications [1,2,3,4,5,6,7,8,9,10]. One of the expected applications is a combustion sensor in an engine of car or ship due to the relatively high piezoelectric constant and electromechanical coupling factor at high temperature.…”

“…We have developed shape-controlled langasite-type piezoelectric crystals by a micro-pulling-down (µ-PD) method [7,8,9,10,11]. The µ-PD method can control a shape of grown crystal using a special-shaped crucible [12] while conventional methods such as Czochralski (Cz), Bridgman-Stockbarger (BS), Floating Zone (FZ) and Flux methods cannot grow shape-controlled crystals.…”