Welcome to My Webpage


In front of the Notre Dame Cathedral, Montreal, Canada March 2004

About Me

Hi, my name is Joe Davies and you have reached my webpage within the uC-Davis Physics Department. I am working on my Ph.D. in the Department with research interests as stated near the bottom of the page. I also enjoy teaching and soaking up as much of the physics world as I can. On this page I hope to have more academically oriented stuff, I hope to have a more personal page set up in the near future.

If you take anything from this page take GRAPH PAPER!!!  This pdf is courtesy the UC-Davis Physics 7 website and can be a handy file to have.

My Schedule

Conferences
  • I'm usually in the department by 10am MWF, and 8am TR
  • If not in class or meetings, I can usually be found in Phy/Geo 216, or Phy/Geo 434

Teaching

I have taught both the Physics 7 Series (physics for the biology folk) and the upper division electronics courses (116A and 116B) offered in the physics department at UC - Davis.  I am not currently teaching.  However, if you have a physics question relating to a class and can't quite find your TA or professor feel free to ask me in person or via email.  I probably won't be much help with GR, high energy, or nuclear stuff;  but I'll be able to steer you the right way.

Research

I am working with Dr Kai Liu in UCD's experimintal condensed matter physics area.  Our specialization is synthesizing and characterizing magnetic thin films and nanostructures.  Thin films with perpendicular anisotropy, exchange-spring magnet multilayers and nanoparticle dispersions are of particular interest to me at the moment.

Most of what I do right now is FORC analysis of the magnetic reversal/switching properties of materials on our two different magnetometers.  Our most recent acquisition is a combination Alternating-Gradient/Vibrating Sample Magnetometer (AGM/VSM)built by Princeton Measurements, Inc.  It allows high speed magnetization measurements in fields up to two Tesla at temperatures ranging from 18K - ~500K.  Our older magnetometer is a Quantum Design SQUID Magnetometer which can produce fields up to seven Tesla in temperatures ranging from 2K - 350K. However the SQUID is a lot slower than the AGM/VSM thus many time dependent effects cannot be directly studied.

Publications

  • J.E. Davies, J. Wu, Chris Leighton, and Kai Liu, "Magnetization reversal and nanoscopic magnetic-phase separation in doped LaxSr1-xCoO3", Phys. Rev. B, accepted Sept 2005.

  • J. E. Davies, O. Hellwig, E. E. Fullerton, J. S. Jiang, S. D. Bader, G. Zimanyi, and Kai Liu, "Anisotropy Dependence of Irreversible Switching in Fe/SmCo and FeNi/FePt Spring Magnet Films", Appl. Phys. Lett. 86, 262503 (2005).

  • J. E. Davies, O. Hellwig, E. E. Fullerton, G. Denbeaux, J. B. Kortright, and Kai Liu, " Magnetization Reversal of Co/Pt multilayers: Microscopic Origin of High Field Magnetic Irreversibility”, Phys. Rev. B 70, 224434 (2004).

  • D. L. Mobley, C. R. Pike, J. E. Davies, D. L. Cox, and R. P. Singh, "Hysteresis Loops of Co/Pt Perpendicular Magnetic Multilayers", J. Phys.: Condens. Matter 16, 5897 (2004).

  • M. S. Pierce, C. R. Buechler, L. B. Sorensen, J. J. Turner, S. D. Kevan, K. M. Chesnel, J. B. Kortright, O. Hellwig, E. E. Fullerton, J. E. Davies, K. Liu, and J. Hunter Dunn, "Disorder-induced microscopic magnetic memory", Phys. Rev. Lett., 94, 017202 (2005).
Questions/Comments?
Email me at: davies@physics.ucdavis.edu
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