Zobrazeno 1 - 10
of 31
pro vyhledávání: '"G. Kostecky"'
Publikováno v:
Journal of Crystal Growth. 109:361-366
The conductivity of high temperature solution grown KTP has been lowered by three orders of magnitude by doping with trivalent ions. The uniformity of the doping and the conductivity of the crystals was found to be uniform within a factor of 2. The d
Publikováno v:
Journal of Crystal Growth. 104:389-391
The solubility of KTiOPO4 in K4P2O7, K8P6O19 and K15P13O40 solvents was determined over the temperature range 900 to 980°C. The slope of the solubility curves were dS/dT−3.4x10-3, 2.3x10-3 and 2.1x10-3 g (KTP)/g(flux)·°C, respectively Significan
Publikováno v:
Journal of Crystal Growth. 62:545-556
A large (144 liter) three-zone crystallizer system was constructed for growing KH 2 PO 4 crystals under conditions of constant temperature and supersaturation. Crystal growth rates exceeding 5 mm day -1 were demonstrated for KH 2 PO 4 using seeds mea
Autor:
G.M. Loiacono, G. Kostecky
Publikováno v:
Materials Research Bulletin. 16:53-58
The thermal properties of pure and doped single crystals of TGS type materials were determined over the temperature range 20 to 90°C. Measurements of the thermal conductivity were made along the principal crystallographic axes and were found to be i
Publikováno v:
Journal of Crystal Growth. 58:495-499
The phenomenon of tapering in KH2PO4 type crystals is shown to be directly related to the bulk supersaturation of the growth solution. Impurity effects are found to be insignificant.
Publikováno v:
Journal of Crystal Growth. 78:453-456
A novel seed-holding apparatus is reported for use in crystal growth from low-temperature solution. The apparatus consists of a turntable rotating freely on a supporting base. Fins affixed to the edge of the turntable allow a growing crystal mounted
Publikováno v:
Journal of Crystal Growth. 46:241-244
Optically clear single crystals of L(+) hydrazonium tartrate, N2H4 · C4H6O6, 2 cm on an edge were grown with difficulty from aqueous solution. Crystal growth is accomplished under an argon atmosphere using the temperature lowering method over the ra
Autor:
G. Kostecky, G.M. Loiacono
Publikováno v:
Thermochimica Acta. 45:133-137
The temperature dependence of the specific heat in deuterated triglycine fluoroberyllate (DTGFB) was measured over the range 294–375 K. The room temperature value was 0.317 cal g−1 K−1 and the jump in Cp between the ferroelectric and paraelectr
Publikováno v:
Journal of Crystal Growth. 46:105-111
A new synthesis technique was used to prepare high purity deuterated triglycine fluoroberyllate (DTGFB). The solubility of DTGFB in D2O between 20 to 60°C was observed to be significantly different from that of TGFB in H2O. Significant differences i
Publikováno v:
Journal of Crystal Growth. 71:269-272
A technique has been demonstrated for growing single crystals of large cross section from aqueous solution using as a seed an array of oriented smaller crystals. The technique, referred to as growth by “seed splicing”, has been successfully appli