The Experts below are selected from a list of 414 Experts worldwide ranked by ideXlab platform
Becker Petra - One of the best experts on this subject based on the ideXlab platform.
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Crystal growth, thermal expansion, pyroelectricity and vibrational spectroscopy of barium Antimony Tartrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O
'Elsevier BV', 2019Co-Authors: Bohaty Ladislav, Kaminskii, Alexander A., Nemec Ivan, Matulkova Irena, Cisarova Ivana, Schneeberger Helmut, Becker PetraAbstract:The tetragonal polar barium Antimony Tartrate trihydrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O, was grown to large single crystals of optical quality and several cm dimensions. A vibrational spectroscopy study, thermal expansion measurements and a determination of the pyroelectric properties were performed and possibilities for phase matching for second harmonic generation (SHG) were analysed. The crystals show a remarkable high pyroelectric coefficient, a moderate anisotropy of thermal expansion and allow for type I and type II phase matching for collinear SHG. A redetermination of the crystal structure of Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O at 150 K is given in addition, together with the vibrational spectra and crystal structures of two new related compounds, Ba [As-2((+)C4H2O6)(2)]center dot 3H(2)O and Ba[Sb-2((+)C4H2O6)(2)]center dot 4H(2)O, determined at the same temperature
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Observation of stimulated Raman scattering in polar tetragonal crystals of barium Antimony Tartrate trihydrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O
'Wiley', 2017Co-Authors: Kaminskii, Alexander A., Becker Petra, Rhee Hanjo, Eichler, Hans J., Lux Oliver, Nemec Ivan, Yoneda Hitoki, Shirakawa Akira, Bohaty LadislavAbstract:The non-centrosymmetric polar tetragonal (P4(1)) barium Antimony Tartrate trihydrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O, was found to be an attractive novel semi-organic crystal manifesting numerous chi((2)-) and chi((3)-)nonlinear optical interactions. In particular, with picosecond single- and dual-wavelength pumping SHG and THG via cascaded parametric four-wave processes were observed. High-order Stokes and anti-Stokes lasing related to two SRS-promoting vibration modes of the crystal, with omega(SRS1) approximate to 575 cm(-1) and omega(SRS2) approximate to 2940 cm(-1), takes place. Basing on a spontaneous Raman investigation an assignment of the two SRS-active vibration modes is discussed
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Crystal growth, crystal structure and optical properties of calcium Antimony Tartrate nonahydrate, Ca[Sb-2((+)C4H2O6)(2)]center dot 9H(2)O
'Wiley', 2015Co-Authors: Bohaty Ladislav, Held Peter, Becker PetraAbstract:Large single crystals of optical quality of the non-centrosymmetric orthorhombic (space group P 2(1)2(1)2(1)) calcium Antimony Tartrate nonahydrate, Ca[Sb-2((+)C4H2O6)(2)]center dot 9H(2)O, were grown from aqueous solution. The crystal structure and thermal stability of the crystals are evaluated and refractive indices and their dispersion in the wavelength range 404 nm - 1083 nm are reported. Based on the linear optical data phase matching conditions for second harmonic generation (SHG) are analysed. This new non-centrosymmetric crystal allows phase matched collinear SHG processes of both, type I and type II, in a broad wavelength range in the visible and near IR regions
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Crystal growth, crystal structure and pyroelectric properties of the polar hexagonal Antimony Tartrates M-II[Sb-2(C4H2O6)(2)]center dot 2H(2)O (M-II = Ca, Sr, Pb)
'Wiley', 2015Co-Authors: Bohaty Ladislav, Held Peter, Schneeberger Helmut, Zheng Tianyi, Becker PetraAbstract:Single crystal growth of lead Antimony Tartrate dihydrate, Pb[Sb-2((+)C4H2O6)(2)]2H(2)O, was successfully performed. The determined polar hexagonal crystal structure is isomorphous to the corresponding calcium and strontium Antimony Tartrates dihydrates. New results of crystal growth and the redetermination of the crystal structures of the nonlinear optical crystal Sr[Sb-2((+)C4H2O6)(2)]2H(2)O and its calcium analogue are reported, together with investigations of the thermal stability and the pyroelectric properties of these polar crystals
P Becker - One of the best experts on this subject based on the ideXlab platform.
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crystal growth thermal expansion pyroelectricity and vibrational spectroscopy of barium Antimony Tartrate ba sb2 c4h2o6 2 3h2o
Optical Materials, 2019Co-Authors: L Bohatý, Irena Matulkova, Ivana Cisařova, Ivan Němec, Helmut Schneeberger, Alexander A Kaminskii, P BeckerAbstract:Abstract The tetragonal polar barium Antimony Tartrate trihydrate, Ba[Sb2((+)C4H2O6)2]·3H2O, was grown to large single crystals of optical quality and several cm dimensions. A vibrational spectroscopy study, thermal expansion measurements and a determination of the pyroelectric properties were performed and possibilities for phase matching for second harmonic generation (SHG) were analysed. The crystals show a remarkable high pyroelectric coefficient, a moderate anisotropy of thermal expansion and allow for type I and type II phase matching for collinear SHG. A redetermination of the crystal structure of Ba[Sb2((+)C4H2O6)2]·3H2O at 150 K is given in addition, together with the vibrational spectra and crystal structures of two new related compounds, Ba[As2((+)C4H2O6)2]·3H2O and Ba[Sb2((+)C4H2O6)2]·4H2O, determined at the same temperature.
Bohaty Ladislav - One of the best experts on this subject based on the ideXlab platform.
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Crystal growth, thermal expansion, pyroelectricity and vibrational spectroscopy of barium Antimony Tartrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O
'Elsevier BV', 2019Co-Authors: Bohaty Ladislav, Kaminskii, Alexander A., Nemec Ivan, Matulkova Irena, Cisarova Ivana, Schneeberger Helmut, Becker PetraAbstract:The tetragonal polar barium Antimony Tartrate trihydrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O, was grown to large single crystals of optical quality and several cm dimensions. A vibrational spectroscopy study, thermal expansion measurements and a determination of the pyroelectric properties were performed and possibilities for phase matching for second harmonic generation (SHG) were analysed. The crystals show a remarkable high pyroelectric coefficient, a moderate anisotropy of thermal expansion and allow for type I and type II phase matching for collinear SHG. A redetermination of the crystal structure of Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O at 150 K is given in addition, together with the vibrational spectra and crystal structures of two new related compounds, Ba [As-2((+)C4H2O6)(2)]center dot 3H(2)O and Ba[Sb-2((+)C4H2O6)(2)]center dot 4H(2)O, determined at the same temperature
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Observation of stimulated Raman scattering in polar tetragonal crystals of barium Antimony Tartrate trihydrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O
'Wiley', 2017Co-Authors: Kaminskii, Alexander A., Becker Petra, Rhee Hanjo, Eichler, Hans J., Lux Oliver, Nemec Ivan, Yoneda Hitoki, Shirakawa Akira, Bohaty LadislavAbstract:The non-centrosymmetric polar tetragonal (P4(1)) barium Antimony Tartrate trihydrate, Ba[Sb-2((+)C4H2O6)(2)]center dot 3H(2)O, was found to be an attractive novel semi-organic crystal manifesting numerous chi((2)-) and chi((3)-)nonlinear optical interactions. In particular, with picosecond single- and dual-wavelength pumping SHG and THG via cascaded parametric four-wave processes were observed. High-order Stokes and anti-Stokes lasing related to two SRS-promoting vibration modes of the crystal, with omega(SRS1) approximate to 575 cm(-1) and omega(SRS2) approximate to 2940 cm(-1), takes place. Basing on a spontaneous Raman investigation an assignment of the two SRS-active vibration modes is discussed
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Crystal growth, crystal structure and optical properties of calcium Antimony Tartrate nonahydrate, Ca[Sb-2((+)C4H2O6)(2)]center dot 9H(2)O
'Wiley', 2015Co-Authors: Bohaty Ladislav, Held Peter, Becker PetraAbstract:Large single crystals of optical quality of the non-centrosymmetric orthorhombic (space group P 2(1)2(1)2(1)) calcium Antimony Tartrate nonahydrate, Ca[Sb-2((+)C4H2O6)(2)]center dot 9H(2)O, were grown from aqueous solution. The crystal structure and thermal stability of the crystals are evaluated and refractive indices and their dispersion in the wavelength range 404 nm - 1083 nm are reported. Based on the linear optical data phase matching conditions for second harmonic generation (SHG) are analysed. This new non-centrosymmetric crystal allows phase matched collinear SHG processes of both, type I and type II, in a broad wavelength range in the visible and near IR regions
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Crystal growth, crystal structure and pyroelectric properties of the polar hexagonal Antimony Tartrates M-II[Sb-2(C4H2O6)(2)]center dot 2H(2)O (M-II = Ca, Sr, Pb)
'Wiley', 2015Co-Authors: Bohaty Ladislav, Held Peter, Schneeberger Helmut, Zheng Tianyi, Becker PetraAbstract:Single crystal growth of lead Antimony Tartrate dihydrate, Pb[Sb-2((+)C4H2O6)(2)]2H(2)O, was successfully performed. The determined polar hexagonal crystal structure is isomorphous to the corresponding calcium and strontium Antimony Tartrates dihydrates. New results of crystal growth and the redetermination of the crystal structures of the nonlinear optical crystal Sr[Sb-2((+)C4H2O6)(2)]2H(2)O and its calcium analogue are reported, together with investigations of the thermal stability and the pyroelectric properties of these polar crystals
L Bohatý - One of the best experts on this subject based on the ideXlab platform.
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crystal growth thermal expansion pyroelectricity and vibrational spectroscopy of barium Antimony Tartrate ba sb2 c4h2o6 2 3h2o
Optical Materials, 2019Co-Authors: L Bohatý, Irena Matulkova, Ivana Cisařova, Ivan Němec, Helmut Schneeberger, Alexander A Kaminskii, P BeckerAbstract:Abstract The tetragonal polar barium Antimony Tartrate trihydrate, Ba[Sb2((+)C4H2O6)2]·3H2O, was grown to large single crystals of optical quality and several cm dimensions. A vibrational spectroscopy study, thermal expansion measurements and a determination of the pyroelectric properties were performed and possibilities for phase matching for second harmonic generation (SHG) were analysed. The crystals show a remarkable high pyroelectric coefficient, a moderate anisotropy of thermal expansion and allow for type I and type II phase matching for collinear SHG. A redetermination of the crystal structure of Ba[Sb2((+)C4H2O6)2]·3H2O at 150 K is given in addition, together with the vibrational spectra and crystal structures of two new related compounds, Ba[As2((+)C4H2O6)2]·3H2O and Ba[Sb2((+)C4H2O6)2]·4H2O, determined at the same temperature.
Hyuksang Kwon - One of the best experts on this subject based on the ideXlab platform.
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electrochemically synthesized sb sb2o3 composites as high capacity anode materials utilizing a reversible conversion reaction for na ion batteries
ACS Applied Materials & Interfaces, 2015Co-Authors: Kyungsik Hong, Dohwan Nam, Sungjin Lim, Dongrak Sohn, Taehee Kim, Hyuksang KwonAbstract:Sb/Sb2O3 composites are synthesized by a one-step electrodeposition process from an aqueous electrolytic bath containing a potassium Antimony Tartrate complex. The synthesis process involves the electrodeposition of Sb simultaneously with the chemical deposition of Sb2O3, which allows for the direct deposition of morula-like Sb/Sb2O3 particles on the current collector without using a binder. Structural characterization confirms that the Sb/Sb2O3 composites are composed of approximately 90 mol % metallic Sb and 10 mol % crystalline Sb2O3. The composite exhibits a high reversible capacity (670 mAh g–1) that is higher than the theoretical capacity of Sb (660 mAh g–1). The high reversible capacity results from the conversion reaction between Na2O and Sb2O3 that occurs additionally to the alloying/dealloying reaction of Sb with Na. Moreover, the Sb/Sb2O3 composite shows excellent cycle performance with 91.8% capacity retention over 100 cycles, and a superior rate capability of 212 mAh g–1 at a high current den...
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Electrochemically Synthesized Sb/Sb2O3 Composites as High-Capacity Anode Materials Utilizing a Reversible Conversion Reaction for Na-Ion Batteries
2015Co-Authors: Kyungsik Hong, Dohwan Nam, Sungjin Lim, Dongrak Sohn, Taehee Kim, Hyuksang KwonAbstract:Sb/Sb2O3 composites are synthesized by a one-step electrodeposition process from an aqueous electrolytic bath containing a potassium Antimony Tartrate complex. The synthesis process involves the electrodeposition of Sb simultaneously with the chemical deposition of Sb2O3, which allows for the direct deposition of morula-like Sb/Sb2O3 particles on the current collector without using a binder. Structural characterization confirms that the Sb/Sb2O3 composites are composed of approximately 90 mol % metallic Sb and 10 mol % crystalline Sb2O3. The composite exhibits a high reversible capacity (670 mAh g–1) that is higher than the theoretical capacity of Sb (660 mAh g–1). The high reversible capacity results from the conversion reaction between Na2O and Sb2O3 that occurs additionally to the alloying/dealloying reaction of Sb with Na. Moreover, the Sb/Sb2O3 composite shows excellent cycle performance with 91.8% capacity retention over 100 cycles, and a superior rate capability of 212 mAh g–1 at a high current density of 3300 mA g–1. The outstanding cycle performance is attributed to an amorphous Na2O phase generated by the conversion reaction, which inhibits agglomeration of Sb particles and acts as an effective buffer against volume change of Sb during cycling