Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Thomas G. Steigerwald"'
Autor:
Saskia Schimmel, Ines Kobelt, Lukas Heinlein, Anna-Carina L. Kimmel, Thomas G. Steigerwald, Eberhard Schlücker, Peter Wellmann
Publikováno v:
Crystals, Vol 10, Iss 9, p 723 (2020)
A variety of functional nitride materials, including the important wide bandgap semiconductor GaN, can be crystallized in exceptionally good structural quality by the ammonothermal method. However, the further development of this method is hindered b
Externí odkaz:
https://doaj.org/article/72701d5ef8fe4217ba1c88deecc8d2ca
Publikováno v:
Ammonothermal Synthesis and Crystal Growth of Nitrides ISBN: 9783030563042
The following chapter is mainly aimed at simulators and crystal growers, as viscosity has an influence on the flow behaviour in the reactor and the diffusion coefficient in the crystal’s vicinity. So, the chapter gives an overview of influencing fa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c61dcfaaf2f8e886e29b96fc312d8e1
https://doi.org/10.1007/978-3-030-56305-9_8
https://doi.org/10.1007/978-3-030-56305-9_8
Autor:
Eberhard Schluecker, Benjamin Hertweck, Lisa P. Freund, Thomas G. Steigerwald, Steven Griffiths, Mathias Göken, Steffen Neumeier, Anna-Carina L. Kimmel, Thomas F. Malkowski, James S. Speck
Publikováno v:
Journal of Crystal Growth. 498:289-300
Corrosion of process equipment during ammonothermal synthesis at high temperature and pressure is still one of the big limitations of this process because of reduced crystal quality and safety issues. In this paper we present preliminary ammonotherma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::776ddcc69d7797c3b6d90def19916932
https://doi.org/10.1016/j.jcrysgro.2018.06.018
https://doi.org/10.1016/j.jcrysgro.2018.06.018
Autor:
Anna-Carina L. Kimmel, Thomas G. Steigerwald, Eberhard Schlücker, Peter J. Wellmann, Saskia Schimmel, Patrick Duchstein, Rainer Niewa, Dirk Zahn
Publikováno v:
Journal of Crystal Growth. 498:214-223
Formation and transport of Ga-containing intermediates are essential for ammonothermal bulk growth of GaN. In this work, in situ X-ray transmission measurements are established as a tool for monitoring face-selective dissolution of GaN crystals as we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc98bee5d42e970974cfda440f3f2df1
https://doi.org/10.1016/j.jcrysgro.2018.06.024
https://doi.org/10.1016/j.jcrysgro.2018.06.024
Autor:
Benjamin Hertweck, Anna-Carina L. Kimmel, Thomas G. Steigerwald, Nicolas S. A. Alt, Eberhard Schlücker
Publikováno v:
Chemical Engineering & Technology. 41:994-1002
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61370c7763f16578aa976d39d3e034ff
https://doi.org/10.1002/ceat.201700680
https://doi.org/10.1002/ceat.201700680
Autor:
Thomas G. Steigerwald, Johannes Balouschek, Eberhard Schluecker, Anna-Carina L. Kimmel, Nicolas S. A. Alt, Benjamin Hertweck
Publikováno v:
The Journal of Supercritical Fluids. 134:96-105
An optical cell was used in this work, which allows spectroscopic measurements of fluids up to 600 °C and 300 MPa. The maximum pressure reached in this work was 254 MPa and the internal cell temperature was a maximum of 563 °C at a heating temperat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::629fc936014cf0503a0eeabae40cee4c
https://doi.org/10.1016/j.supflu.2017.12.028
https://doi.org/10.1016/j.supflu.2017.12.028
Autor:
Nicolas S. A. Alt, Saskia Schimmel, Philipp Macher, Martina Koch, Peter J. Wellmann, Eberhard Schlücker, Anna-Carina L. Kimmel, Thomas G. Steigerwald
Publikováno v:
Journal of Crystal Growth. 479:59-66
Solubility and dissolution kinetics of GaN are investigated, as they represent essential parameters for ammonothermal crystal growth of GaN. In situ X-ray imaging is applied to monitor the dissolving crystal. Both ammonoacidic and ammonobasic conditi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4039517e2a9167ac5f155431a793da4
https://doi.org/10.1016/j.jcrysgro.2017.09.027
https://doi.org/10.1016/j.jcrysgro.2017.09.027
Publikováno v:
Chemical Engineering & Technology. 40:1101-1106
Ultrasonic velocity measurement data has been established as a simple and convenient tool to determine different thermodynamic properties of liquids and solutions. Such measurements were carried out in situ to determine the solubility of NaN3 in liqu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff5fb974283c335f05989ecb93f4e25f
https://doi.org/10.1002/ceat.201700146
https://doi.org/10.1002/ceat.201700146
Autor:
Nicolas S. A. Alt, Thomas G. Steigerwald, Benjamin Hertweck, Peter J. Wellmann, Eberhard Schlücker, Ulrike Künecke, Saskia Schimmel, Theresia M. M. Richter, Rainer Niewa, Michael W. Lindner
Publikováno v:
Journal of Crystal Growth. 418:64-69
Quantitative data on the solubility of GaN in supercritical ammonia using NH 4 F as mineralizer are reported. The solubility is determined by in situ x-ray imaging of the dissolution of GaN single crystals. First, solubility values obtained by this m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e85a960d534eea0eaf8d03533159b91
https://doi.org/10.1016/j.jcrysgro.2015.02.020
https://doi.org/10.1016/j.jcrysgro.2015.02.020
Autor:
Eberhard Schluecker, Peter J. Wellmann, Nicolas S. A. Alt, Saskia Schimmel, Thomas G. Steigerwald, Benjamin Hertweck
Publikováno v:
The Journal of Supercritical Fluids. 99:76-87
The ammonoacidic crystal growth is a comprehensive method for the synthesis of novel compounds like nitrides or amindes but also for the growth of bulk single crystals like gallium or aluminum nitride for power electronics and photonics. In this repo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba03f3f76a049c8dfd2d03f0e5371817
https://doi.org/10.1016/j.supflu.2015.01.017
https://doi.org/10.1016/j.supflu.2015.01.017