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作者:... Nora Wolff , Christo Guguschev , Steffen Ganschow
来源:[J].Journal of Crystal Growth(IF 1.552), 2018, Vol.486, pp.117-121
摘要:Abstract(#br)When calcium titanate crystals are grown from stoichiometric melts, they crystallize in the cubic perovskite structure. Upon cooling to room temperature they undergo subsequent phase transitions to tetragonal and orthorhombic modifications. These phase transitions ar...
作者:Christo Guguschev , Arnold Burger ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2018, Vol.483, pp.121-124
摘要:Abstract(#br)The crystal growth and behavior of a high-performance, non-hygroscopic scintillator, Cs 2 HfCl 6 (CHC) and its variant, Cs 2 HfCl 4 Br 2 (CHCB) are presented in this work. CHC and CHCB were prepared by melt compounding of sublimed HfCl 4 with CsCl and CsBr to pr...
作者:... Piotr Becla , Christo Guguschev , Shariar Motakef
来源:[J].Journal of Crystal Growth(IF 1.552), 2018, Vol.483, pp.211-215
摘要:Abstract(#br)Thallium Bromide (TlBr) is a promising room-temperature radiation detector candidate with excellent charge transport properties. Currently, Travelling Molten Zone (TMZ) technique is widely used for growth of semiconductor-grade TlBr crystals. However, there are sever...
作者:Christo Guguschev , Steffen Ganschow
来源:[J].Journal of Alloys and Compounds(IF 2.39), 2018, Vol.738, pp.415-421
摘要:Abstract(#br)High-temperature thermal properties of three neighboring rare-earth scandates DyScO 3 , TbScO 3 and GdScO 3 were compared to La 0.29 Sr 0.71 Al 0.65 Ta 0.35 O 3 (LSAT) and sapphire. To calculate thermal conductivity, heat capacity and thermal diffusivity were measure...
作者:Christo Guguschev , Albert Kwasniewski ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2018
摘要:Abstract(#br)Based on differential thermal analysis (DTA) and X-ray powder diffraction (XRD), a description of the Nd 2 O 3 –Lu 2 O 3 –Sc 2 O 3 system was obtained by thermodynamic assessment. Four fields of primary crystallization could be identified; from melt compositions...
作者:Christo Guguschev , Detlef Klimm ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2017, Vol.457, pp.137-142
摘要:Abstract(#br)The pseudobinary system LaLuO 3 –LaScO 3 was explored in hopes of discovering new perovskite-type substrates with pseudocubic lattice parameters above 4 Å. A complete solid solution of the type (LaLuO 3 ) 1− x (LaScO 3 ) x forms between the end members LaLu...
作者:Julia Hidde , Christo Guguschev , Detlef Klimm
来源:[J].Journal of Crystal Growth(IF 1.552), 2019, Vol.509, pp.60-65
摘要:Abstract(#br)The systems Nb 2 O 5 –Ta 2 O 5 and Nb 2 O 5 –V 2 O 5 were investigated using thermal analysis, X-ray powder diffraction and thermodynamic simulations. Solid solution formation is possible for both systems; furthermore, both contain one intermediate compound, VNb...
作者:Christo Guguschev , Dirk J. Kok ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2016
摘要:Abstract(#br)Strontium titanate (SrTiO 3 ), a well-established traditional perovskite substrate as well as a promising substrate crystal for the epitaxy of new advanced perovskite-type thin films, suffers from the unavailability in adequate quality for the latter. To improve...
作者:Christo Guguschev , George Calvert ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2014, Vol.404, pp.231-240
摘要:Abstract(#br)Floating graphite and fused silica dies were used to grow both undoped and Na doped CsI crystals by the edge-defined film-fed growth (EFG) method. Both die materials yielded high quality CsI crystals at high growth rates. Under the conditions employed in these growth...
作者:Christo Guguschev , Sebastian Golka ...
来源:[J].Journal of Crystal Growth(IF 1.552), 2012, Vol.344 (1), pp.19-26
摘要:Abstract(#br)The structural properties of the heteroepitaxially grown AlN on off-axis 4H-/6H-SiC by PVT are presented in dependence of the seed polarity. In addition to long-term growth runs (48–72 h) short-term experiments were carried out in order to investigate the initia...

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