Ashfia Huq

Ashfia Huq

Position: Chemical Crystallography Group Lead, POWGEN Lead Instrument Scientist

Instrument: Powder Diffractometer

Group: Chemical Crystallography

Division: Chemical and Engineering Materials Division

Facility: Spallation Neutron Source

Contact: huqa@ornl.gov or (630) 986-7321

November 2011 – present: Lead instrument scientist for the powder diffractometer (POWGEN) at the Spallation Neutron Source, Oak Ridge National Laboratory. Responsibilities include, leading the POWGEN team to successful user operation along with maintaining own science research program.

May 2006 – October 2011: Instrument scientist for the powder diffractometer (POWGEN) at the Spallation Neutron Source, Oak Ridge National Laboratory. In addition to my own research, I assist users in setting up experiments, reduction and analysis of their data.

June 2003 – May 2006: Post Doctoral Associate, General Purpose Powder Diffractometer (GPPD), Intense Pulsed Neutron Source (IPNS), Argonne National Laboratory (ANL)

Education

Stony Brook University, Stony Brook, NY (September 1996 – May 2003): Graduate Student, Department of Physics and Astronomy under the supervision of Dr. Peter W. Stephens. Ph.D. Thesis Title: “Structure and Properties of Alkali Fullerides and Structure Solution from Powder Diffraction.”

Mount Holyoke College, South Hadley, Massachusetts, (May 1996): AB degree, Magna Cum Laude with majors in Physics and Computer Science.

Research

My primary research interest is neutron and x-ray powder diffraction of materials for energy storage and other condense matter systems. Structural studies from powder diffraction data are often harder than single crystal due to the collapse of information from 3D to 1D. Nevertheless, with improvements in instrumentation, algorithm development and enhanced computing power, great strides have been made in ab-initio structure solution and structure refinement from powder diffraction. These improvements have also made it possible to do fast data collection to follow dynamics of materials under operational condition. This has been my current research focus. In the recent past I have been working on structure property relationship of materials used for hydrogen storage, ionic conductors for solid oxide fuel cell and Lithium ion batteries.

Selected Publications

  • Y.Q. Cheng, Z. H. Bi, A. Huq, M. Feygenson, M., Bridges, C. A., Paranthaman M. P. and B. G. Sumpter, “An integrated approach for structural characterization of complex solid state electrolytes: the case of lithium lanthanum titanate”, Journal of Materials Chemistry A, 2, 2418 (2014).
  • Y. Wang, A. Huq, W. Lai, “Insight into lithium distribution in lithium-stuffed garnet oxides through neutron diffraction and atomistic simulation: Li7-xLa3Zr2-xTaxO12 (x = 0-2) series”, Solid State Ionics 255, 39-49 (2014).
  • D. Montasserasadi, D. Mohanty, A. Huq, L. Heroux, E. A. Payzant, and J. B. Wiley, “Topochemical Synthesis of Alkali-Metal Hydroxide Layers within Double- and Triple-Layered Perovskites”, Inorganic Chemistry 53, 1773 (2014).
  • D. E. Bugaris, J. P. Hodges, A. Huq, W. M. Chance, A. Heyden, F. Chen and Hans-Conrad zur Loye, “Investigation of the high-temperature redox chemistry of Sr2Fe1.5Mo0.5O6−δ via in situ neutron diffraction”, Journal of Materials Chemistry A, 11, 4045 (2014)
  • P. Cottingham, D. C. Miller, J. P. Sheckelton, J. R. Neilson, M. Feygenson, A. Huq and T. M. McQueen, “Dynamic charge disproportionation in the 1D chain material PdTeI”, Journal of Materials Chemistry C, 17 (2014).

Awards, Honors and Memberships

Mary Lyon Award: Awarded by the Alumnae Association of Mount Holyoke College. The award, named after the college's 1837 founder, Mary Lyon, is presented to an outstanding young alumna who has been out of college 15 years or less.

Leadership Alliance Doctoral Scholar: Awarded at the Leadership Alliance Symposium 2008. (The Leadership Alliance is an academic consortium of 33 institutions of higher learning, including leading research and teaching college and universities. The mission of the Leadership Alliance is to develop underrepresented students into outstanding leaders and role models in academia, business and the public sector).