Dr. Georg Spiekermann

Kontakt

Universität Potsdam,
Institut für Geowissenschaften

Dr. Georg Spiekermann
Haus 27, Raum 2.26

E-Mail:
geospiek@uni-potsdam.de
Telefon:
+49 331 977 5836
Fax:
+49 331 977 5700

 

  • Biografie
  • Forschung
  • Lehre
  • Publikationen

Biografie

2016-
Research associate at University of Potsdam, Institute of Earth and Environmental Science, Mineralogy group
2014-2016
Beamline scientist at Deutsches Elektronen-Synchrotron (DESY), PETRA III, inelastic X-ray spectroscopy methods
2012-2014
Staff at Alfred Wegener Institute (AWI), Helmholtz Centre for Polar and Marine Research, operation of the geophysical lab at Neumayer III
2009-2012
PhD at Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences, ab initio modeling of silicate melts
2008
Diploma (Dipl.-Ing.) at Technical University of Berlin (TU Berlin), focus in geophysics and mineralogy

Forschung

My scientific interest focuses on the properties of silicate melts and glasses under conditions relevant to the Earth's mantle. For my research, I make use of ab initio modeling, X-ray diffraction and spectroscopy methods, diamond-anvil cells and laser heating.

Lehre

I teach crystallography, crystal chemistry and experimental mineralogy.

Publikationen

17. Spiekermann, G., Kupenko, I., Petitgirard, S., Harder, M., Nyrow, A., Weis, C., Albers, C., Biedermann, N., Libon, L., Sahle, C. J., Cerantola, V., Glazyrin, K., Konopkova, Z., Sinmyo, R., Morgenroth, W., Sergueev, I., Yavas, Y., Dubrovinsky, L., Tolan, M., Sternemann, C., Wilke, M. (2020) A portable on-axis laser heating system for near-90° X-ray spectroscopy: Application to ferropericlase and iron silicide. Journal of Synchrotron Radiation. DOI: 10.1107/S1600577519017041

16. Sublett, D. M. Jr., Sendula, E., Lamadrid, H., Steele-MacInnis, M., Spiekermann, G., Burruss, R. C., Bodnar, R. J. (2020) Shift in the Raman symmetric stretching band of N2, CO2, and CH4 as a function of temperature, pressure, and density. Journal of Raman Spectroscopy. DOI: 10.1002/jrs.5805

15. Petitgirard, S., Spiekermann, G., Glazyrin, K., Garrevoet, J., Murakami, M. (2019) Density and coordination evolution in amorphous-GeO2 up to 133 GPa. Physical Review B. DOI: 10.1103/PhysRevB.100.214104

14. Spiekermann, G., Harder, M., Gilmore, K., Zalden, P., Sahle, C. J., Petitgirard, S., Wilke, M., Biedermann, N., Weis, C., Morgenroth, W., Tse, J. S., Kulik, E., Nishiyama, N., Yavas, H., Sternemann, C. (2019) Persistent octahedral coordination in amorphous GeO2 up to 100 GPa revealed by Kb'' X-ray emission spectroscopy. Physical Review X. DOI: 10.1103/PhysRevX.9.011025

13. Weis, C., Spiekermann, G., Sternemann, C., Harder, M., Vanko, G., Cerantola, V., Sahle, C. J., Forov, Y., Sakrowski, R., Kupenko, I., Petitgirard, S., Yavaş, H., Bressler, C., Gawelda, W., Tolan, M., Wilke, M. (2019) Combining X-ray Kb1,3, valence-to-core, and X-ray Raman spectroscopy for studying Earth materials at high pressure and temperature: the case of siderite. Journal of Analytical Atomic Spectroscopy. DOI: 10.1039/C8JA00247A.

12. Petitgirard, S., Sahle, C., Weis, C., Gilmore, K., Spiekermann, G., Tse, J. S., Cavallari, C., Cerantola, V., Sternemann, C. (2019) Magma properties at Earth's lower mantle conditions inferred from electronic structure and coordination of silica. Geochemical Perspectives Letters. DOI: 10.7185/geochemlet.1902

11. Ketenoglu, D., Spiekermann, G., Harder, M., Oz, E., Koz, C., C. Y. M., Yilmaz, E., Yin, Z., Sahle, C., Detlefs, B., and Yavaş, H. (2018) X-ray Raman spectroscopy of lithium-ion battery electrolyte solutions in a flow cell. Journal of Synchrotron Radiation. DOI: 10.1107/S1600577518001662.

10. Petitgirard S., Spiekermann G., Weis C., Sahle C., Sternemann C., Wilke M. (2017) Miniature diamond anvils for X-ray Raman scattering spectroscopy experiments at high pressure. Journal of Synchrotron Radiation. DOI: 0.1107/S1600577516017112

9. Weis, C., Sternemann, C., Cerantola, V., Sahle, C.J., Spiekermann, G., Harder, M., Forov, Y., Kononov, A., Sakrowski, R., Yavas, H., Tolan, M., Wilke, M. (2017) Pressure driven spin transition in siderite and magnesiosiderite single crystals. Scientific Reports. DOI:10.1038/s41598-017-16733-3

8. Sahle, C., Rosa, A., Rossi, M., Cerantola, V., Spiekermann, G., Petitgirard, S., Jacobs, J., Huotari, S., Moretti Sala, M., Mirone, A. (2017). Direct tomography imaging for inelastic X-ray scattering experiments at high pressure. Journal of Synchrotron Radiation. DOI: 10.1107/S1600577516017100.

7. Spiekermann, G., Wilke, M., Jahn, S. (2016) Structural and dynamical properties of supercritical H2O-SiO2 fluids studied by ab initio molecular dynamics. Chemical Geology. DOI: 10.1016/j.chemgeo.2016.01.010

6. Sahle, C. J., Sternemann, C., Giacobbe, C., Yan, Y. G., Weis, C., Harder, M., Forov, Y., Spiekermann, G., Tolan, M., Krisch, M., Remhof, A., 2016. Formation of CaB6 in the thermal decomposition of the hydrogen storage material Ca(BH4)(2). Physical Chemistry Chemical Physics. DOI: 10.1039/c6cp02495e

5. Nyrow, A., Sternemann, C., Tse, J. S., Weis, C., Sahle, C. J., Mende, K., Wieland, D. C. F., Cerantola, V., Gordon, R. A., Spiekermann, G., Regier, T., Wilke, M., Tolan, M., 2016, Bulk sensitive determination of the Fe3+/Fe-Tot-ratio in minerals by Fe L-2/3-edge X-ray Raman scattering. Journal of Analytical Atomic Spectroscopy. DOI: 10.1039/c5ja00261c

4. Zitterbart, D. P., Richter, S., Spiekermann, G., Behrens, L. K., Regnery, J., Fontes, R. P., Hänssler, T., König-Langlo, G., Weller, R., Fabry, B., 2014, Are environmental factors responsible for changed breeding behaviour in emperor penguins? Antarctic Science. DOI: 10.1017/S0954102014000285

3. Spiekermann, G., Steele-MacInnis, M., Kowalski, P. M., Schmidt, C., and Jahn, S., 2013, Vibrational properties of silica species in MgO-SiO2 glasses obtained from ab initio molecular dynamics. Chemical Geology. DOI: 10.1016/j.chemgeo.2012.08.020

2. Spiekermann, G., Steele-MacInnis, M., Kowalski, P. M., Schmidt, C., and Jahn, S., 2012, Vibrational mode frequencies of H4SiO4, D4SiO4, H6Si2O7, and H6Si3O9 in aqueous environment, obtained from ab initio molecular dynamics. Journal of Chemical Physics. DOI: 10.1063/1.4761824

1. Spiekermann, G., Steele-MacInnis, M., Schmidt, C., and Jahn, S., 2012, Vibrational mode frequencies of silica species in SiO2-H2O liquids and glasses from ab initio molecular dynamics. Journal of Chemical Physics. DOI: 10.1063/1.3703667

Biografie

2016-
Research associate at University of Potsdam, Institute of Earth and Environmental Science, Mineralogy group
2014-2016
Beamline scientist at Deutsches Elektronen-Synchrotron (DESY), PETRA III, inelastic X-ray spectroscopy methods
2012-2014
Staff at Alfred Wegener Institute (AWI), Helmholtz Centre for Polar and Marine Research, operation of the geophysical lab at Neumayer III
2009-2012
PhD at Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences, ab initio modeling of silicate melts
2008
Diploma (Dipl.-Ing.) at Technical University of Berlin (TU Berlin), focus in geophysics and mineralogy

Forschung

My scientific interest focuses on the properties of silicate melts and glasses under conditions relevant to the Earth's mantle. For my research, I make use of ab initio modeling, X-ray diffraction and spectroscopy methods, diamond-anvil cells and laser heating.

Lehre

I teach crystallography, crystal chemistry and experimental mineralogy.

Publikationen

17. Spiekermann, G., Kupenko, I., Petitgirard, S., Harder, M., Nyrow, A., Weis, C., Albers, C., Biedermann, N., Libon, L., Sahle, C. J., Cerantola, V., Glazyrin, K., Konopkova, Z., Sinmyo, R., Morgenroth, W., Sergueev, I., Yavas, Y., Dubrovinsky, L., Tolan, M., Sternemann, C., Wilke, M. (2020) A portable on-axis laser heating system for near-90° X-ray spectroscopy: Application to ferropericlase and iron silicide. Journal of Synchrotron Radiation. DOI: 10.1107/S1600577519017041

16. Sublett, D. M. Jr., Sendula, E., Lamadrid, H., Steele-MacInnis, M., Spiekermann, G., Burruss, R. C., Bodnar, R. J. (2020) Shift in the Raman symmetric stretching band of N2, CO2, and CH4 as a function of temperature, pressure, and density. Journal of Raman Spectroscopy. DOI: 10.1002/jrs.5805

15. Petitgirard, S., Spiekermann, G., Glazyrin, K., Garrevoet, J., Murakami, M. (2019) Density and coordination evolution in amorphous-GeO2 up to 133 GPa. Physical Review B. DOI: 10.1103/PhysRevB.100.214104

14. Spiekermann, G., Harder, M., Gilmore, K., Zalden, P., Sahle, C. J., Petitgirard, S., Wilke, M., Biedermann, N., Weis, C., Morgenroth, W., Tse, J. S., Kulik, E., Nishiyama, N., Yavas, H., Sternemann, C. (2019) Persistent octahedral coordination in amorphous GeO2 up to 100 GPa revealed by Kb'' X-ray emission spectroscopy. Physical Review X. DOI: 10.1103/PhysRevX.9.011025

13. Weis, C., Spiekermann, G., Sternemann, C., Harder, M., Vanko, G., Cerantola, V., Sahle, C. J., Forov, Y., Sakrowski, R., Kupenko, I., Petitgirard, S., Yavaş, H., Bressler, C., Gawelda, W., Tolan, M., Wilke, M. (2019) Combining X-ray Kb1,3, valence-to-core, and X-ray Raman spectroscopy for studying Earth materials at high pressure and temperature: the case of siderite. Journal of Analytical Atomic Spectroscopy. DOI: 10.1039/C8JA00247A.

12. Petitgirard, S., Sahle, C., Weis, C., Gilmore, K., Spiekermann, G., Tse, J. S., Cavallari, C., Cerantola, V., Sternemann, C. (2019) Magma properties at Earth's lower mantle conditions inferred from electronic structure and coordination of silica. Geochemical Perspectives Letters. DOI: 10.7185/geochemlet.1902

11. Ketenoglu, D., Spiekermann, G., Harder, M., Oz, E., Koz, C., C. Y. M., Yilmaz, E., Yin, Z., Sahle, C., Detlefs, B., and Yavaş, H. (2018) X-ray Raman spectroscopy of lithium-ion battery electrolyte solutions in a flow cell. Journal of Synchrotron Radiation. DOI: 10.1107/S1600577518001662.

10. Petitgirard S., Spiekermann G., Weis C., Sahle C., Sternemann C., Wilke M. (2017) Miniature diamond anvils for X-ray Raman scattering spectroscopy experiments at high pressure. Journal of Synchrotron Radiation. DOI: 0.1107/S1600577516017112

9. Weis, C., Sternemann, C., Cerantola, V., Sahle, C.J., Spiekermann, G., Harder, M., Forov, Y., Kononov, A., Sakrowski, R., Yavas, H., Tolan, M., Wilke, M. (2017) Pressure driven spin transition in siderite and magnesiosiderite single crystals. Scientific Reports. DOI:10.1038/s41598-017-16733-3

8. Sahle, C., Rosa, A., Rossi, M., Cerantola, V., Spiekermann, G., Petitgirard, S., Jacobs, J., Huotari, S., Moretti Sala, M., Mirone, A. (2017). Direct tomography imaging for inelastic X-ray scattering experiments at high pressure. Journal of Synchrotron Radiation. DOI: 10.1107/S1600577516017100.

7. Spiekermann, G., Wilke, M., Jahn, S. (2016) Structural and dynamical properties of supercritical H2O-SiO2 fluids studied by ab initio molecular dynamics. Chemical Geology. DOI: 10.1016/j.chemgeo.2016.01.010

6. Sahle, C. J., Sternemann, C., Giacobbe, C., Yan, Y. G., Weis, C., Harder, M., Forov, Y., Spiekermann, G., Tolan, M., Krisch, M., Remhof, A., 2016. Formation of CaB6 in the thermal decomposition of the hydrogen storage material Ca(BH4)(2). Physical Chemistry Chemical Physics. DOI: 10.1039/c6cp02495e

5. Nyrow, A., Sternemann, C., Tse, J. S., Weis, C., Sahle, C. J., Mende, K., Wieland, D. C. F., Cerantola, V., Gordon, R. A., Spiekermann, G., Regier, T., Wilke, M., Tolan, M., 2016, Bulk sensitive determination of the Fe3+/Fe-Tot-ratio in minerals by Fe L-2/3-edge X-ray Raman scattering. Journal of Analytical Atomic Spectroscopy. DOI: 10.1039/c5ja00261c

4. Zitterbart, D. P., Richter, S., Spiekermann, G., Behrens, L. K., Regnery, J., Fontes, R. P., Hänssler, T., König-Langlo, G., Weller, R., Fabry, B., 2014, Are environmental factors responsible for changed breeding behaviour in emperor penguins? Antarctic Science. DOI: 10.1017/S0954102014000285

3. Spiekermann, G., Steele-MacInnis, M., Kowalski, P. M., Schmidt, C., and Jahn, S., 2013, Vibrational properties of silica species in MgO-SiO2 glasses obtained from ab initio molecular dynamics. Chemical Geology. DOI: 10.1016/j.chemgeo.2012.08.020

2. Spiekermann, G., Steele-MacInnis, M., Kowalski, P. M., Schmidt, C., and Jahn, S., 2012, Vibrational mode frequencies of H4SiO4, D4SiO4, H6Si2O7, and H6Si3O9 in aqueous environment, obtained from ab initio molecular dynamics. Journal of Chemical Physics. DOI: 10.1063/1.4761824

1. Spiekermann, G., Steele-MacInnis, M., Schmidt, C., and Jahn, S., 2012, Vibrational mode frequencies of silica species in SiO2-H2O liquids and glasses from ab initio molecular dynamics. Journal of Chemical Physics. DOI: 10.1063/1.3703667