Kzushige Tota

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We grew column-shaped Sr<sub>3</sub>NbGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub> (SNGS) and Sr<sub>3</sub>TaGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub> (STGS) langasite-type piezoelectric single crystals by the micro-pulling-down (&#x03BC;-PD) method. 3-mm-diameter SNGS and STGS crystals were grown using a Pt-Rh crucible with a 3-mm-diameter columnar die.(More)
We grew Ca<sub>3</sub>NbGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub> (CNGS) single crystals in Air, Ar+3%O<sub>2</sub> and Ar atmosphere by the micro-pulling-down (&#x03BC;-PD) method in order to clarify the origin of the crystal color. While the CNGS crystal grown in Air indicated orange color, the crystal grown in Ar was colorless. CNGS crystal grown in Air(More)
We have grown the shape-controlled Sr<inf>3</inf>NbGa<inf>3</inf>Si<inf>2</inf>O<inf>14</inf> (SNGS) and Sr<inf>3</inf>TaGa<inf>3</inf>Si<inf>2</inf>O<inf>14</inf> (STGS) langasite-type crystals by the &#x03BC;-PD method. Columnar-shaped SNGS and STGS crystals were grown using the Pt-Rh crucible with a columnar die in 3 mm diameter. Grown crystals indicated(More)
We have grown shape-controlled langasite-type crystals by the micro-pulling-down (&#x03BC;-PD) method. Columnar shaped La<sub>3</sub>Ta<sub>0.5</sub>Ga<sub>5.5</sub>O<sub>14</sub> (LTG), Ca<sub>3</sub>NbGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub> (CNGS), Ca<sub>3</sub>TaGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub> (CTGS),(More)
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