Phone: 252-2281 | Fax: 252-7392

E-Mail: strempfer@anl.gov

• 2017-present: Scientist, X-ray Science Division, Argonne National Laboratory
• 2006-2017: Beamline Responsible, Beamline P09, PETRA III, Deutsches Elektronen-Synchrotron DESY, Hamburg Germany
• 2001-2006: Group leader, Max-Planck-Institute for Solid State Research, Stuttgart, Germany
• 1999-2001: Visiting Assistant Professor, Department of Physics, Northern Illinois University, and BESSRC-CAT, Materials Science Division, Argonne National Laboratory
• 1998-1999: Postdoctoral Research Associate, MuCAT, Ames Laboratory
• University of Hamburg, Germany: Ph. D. in Physics, 1998
• University of Karlsruhe, Germany: Diploma in Physics, 1994

• Resonant and non-resonant diffraction from magnetic materials
• Magnetic spectroscopy methods applied to strongly correlated electron systems

1. “Long-range antiferromagnetic order of formally nonmagnetic Eu3+ Van Vleck ions observed in multiferroic Eu1-xYxMnO3”, A. Skaugen, E. Schierle, G. van der Laan, D. K. Shukla, H. C. Walker, E. Weschke, J. Strempfer, Phys. Rev. B 91, 180409 (2015).
2. “Resonant scattering and diffraction beamline P09 at PETRA III”, J. Strempfer, S. Francoual, D. Reuther, D. Shukla, A. Skaugen, H. Schulte-Schrepping, T. Kracht, H. Franz, Journal of Synchrotron Radiation 20, 541 (2013)
3. “Ho and Fe magnetic ordering in multiferroic HoFe3(BO3)4”, D. Shukla, S. Francoual, A. Skaugen, M. v. Zimmermann, H. Walker, L. Bezmaternykh, I.A. Gudim, V.L. Temerov, J. Strempfer, Phys. Rev. B 86, 224421 (2012)
4. “Magnetic structure of RuSr2GdCu2O8 determined by resonant x-ray diffraction”, B. Bohnenbuck, I. Zegkinoglou, J. Strempfer, C. S. Nelson, H.-H. Wu, C. Schüssler-Langeheine, M. Reehuis, E. Schierle, P. Leininger, T. Herrmannsdörfer, J. Lang, G. Srajer, C. T. Lin, B. Keimer, Phys. Rev. Letters 102, 037205 (2009)
5. “Absence of commensurate ordering at the polarization flop transition in multiferroic DyMnO3”, J. Strempfer, B. Bohnenbuck, M. Mostovoy, N. Aliouane, D. Argyriou, F. Schrettle, J. Hemberger, A. Krimmel, M. v. Zimmermann, Phys. Rev. B 75, 212402 (2007)
6. “Field-induced linear magnetoelastic coupling in multiferroic TbMnO3”, N. Aliouane, D. N. Argyriou, J. Strempfer, I.  Zegkinoglou, S. Landsgesell, M. v. Zimmermann
Phys. Rev. B 73, 020102(R) (2006)
7. “Magnetic properties of transition metal fluorides MF2 (M=Mn, Fe, Co, Ni) via high-energy photon diffraction”, J. Strempfer, U. Rütt, S.P. Bayrakci, T. Brückel, W. Jauch, Phys. Rev. B 69, 014417 (2004)
8. “Absolute spin magnetic moment of FeF2 from high energy photon diffraction”, J. Strempfer, U. Rütt, W. Jauch, Phys. Rev. Lett. 86, 3152 (2001)
9. “The non-resonant magnetic x-ray scattering cross-section for photon energies up to 500keV”, J. Strempfer, T. Brückel, D. Hupfeld, J. Schneider, K.-D. Liss, T. Tschentscher, Europhys. Lett. 40, 569-574 (1997)
10. “The non-resonant magnetic x-ray scattering cross section of MnF2. Part 2: High energy x-ray diffraction at 80 keV”, J. Strempfer, T. Brückel, U. Rütt, J. Schneider, K.-D. Liss, T. Tschentscher, Acta Cryst. A 52, 438 (1996).