Capabilities of the FIE-TAX Instrument

HB-1A is a fixed-incident-energy triple-axis spectrometer that is most beneficial to the condensed matter and materials science communities. It is an excellent instrument for measuring low-lying magnetic excitations in solids and for studying structural and magnetic phase transitions in bulk materials as well as nanostructured materials such as thin films and nanoparticles. In the case of thin films, the use of energy analysis is a key capability which enables the desired signal to be separated from the massive background due to the substrate. Due to its versatility and easy access, this instrument can be used for parametric studies with a variety of sample environments to provide complete control of thermodynamic variables such as temperature, magnetic field, and pressure. HB-1A has proved to be a particularly good instrument for studying materials with weak scattering, such as millimeter-size single crystals, magnetic thin films, and nanoparticle materials.

The following examples highlight the typical capabilities of HB-1A:

  1. Study structural and magnetic phase transitions in bulk materials
    • Lu X., Gretarsson H., Zhang R., Liu X., Luo H., Tian W., Laver M., Yamani Z., Kim Y.-J., Nevidomskyy A. H., Si Q., Dai P., "Avoided quantum criticality and magnetoelastic coupling in BaFe2-xNixAs2 ", Physical Review Letters 110, 257001 (2013).
    • Dhital C., Khadka S., Yamani Z., Cruz C. dela, Hogan T. C., Disseler S. M., Pokharel M., Lukas K. C., Tian W., Opeil C. P., Wang Z., Wilson S. D., "Spin ordering and electronic texture in the bilayer iridate Sr3Ir2O7", Physical Review B: Condensed Matter and Materials Physics 86, 100401 (2012).
    • Pratt D. K., Kim M. G., Kreyssig A., Lee Y. B., Tucker G. S., Thaler A., Tian W., Zarestky J. L., Bud'ko S. L., Canfield P. C., Harmon B. N., Goldman A. I., McQueeney R. J., "Incommensurate spin-density wave order in electron-doped BaFe2As2 superconductors", Physical Review Letters 106, 257001 (2011).
  2. Study structural and magnetic phase transitions in thin film and nanoparticle materials
  3. Study low-lying magnetic excitations
  4. Study high-temperature phonons using neutron energy gain
    • Ma J., Delaire O., May A. F., Carlton C. E., McGuire M. A., VanBebber L. H., Abernathy D. L., Ehlers G., Hong T., Huq A., Tian W., Keppens V. M., Shao-Horn Y., Sales B. C., "Glass-like phonon scattering from a spontaneous nanostructure in AgSbTe2", Nature Nanotechnology, (2013).
    • Cai Ling., Toulouse Jean., Luo Haosu, and Tian Wei, “Anisotropic and competing phonon coupling in relaxor ferroelectric (Na1/2Bi1/2)TiO3 near high temperature phase transition”, submitted to Physical Review B