TY - JOUR
T1 - Optical floating zone growth of high-quality Cu 2MnAl single crystals
AU - Neubauer, A.
AU - Jonietz, F.
AU - Meven, M.
AU - Georgii, R.
AU - Brandl, G.
AU - Behr, G.
AU - Böni, P.
AU - Pfleiderer, C.
N1 - Funding Information:
We gratefully acknowledge support and discussions with S. Masalovitch, B. Russ, T. Adams, S. Mühlbauer, N. Vizent, J. Repper, A. Mantwill, R. Schwikowski, the team of the crystal laboratory at TUM, and the team of FRM II. We also gratefully acknowledge financial support through DFG collaborative research network TRR80 (From electronic correlations to functionality), the DFG research unit FOR960 (quantum phase transitions) and individual grants under contract PF393/10 and PF393/11.
PY - 2012/10/1
Y1 - 2012/10/1
N2 - We report the growth of large single-crystals of Cu 2MnAl, a ferromagnetic Heusler compound suitable for polarizing neutron monochromators, by means of optical floating zone under ultra-high vacuum compatible conditions. Unlike Bridgman or Czochralsky grown Cu 2MnAl, our floating zone grown single-crystals show highly reproducible magnetic properties and an excellent crystal quality with a narrow and homogeneous mosaic spread as examined by neutron diffraction. An investigation of the polarizing properties in neutron scattering suggests a high polarization efficiency, limited by the relatively small sample dimensions studied. Our study identifies optical floating zone under ultra-high vacuum compatible conditions as a highly reproducible method to grow high-quality single-crystals of Cu 2MnAl.
AB - We report the growth of large single-crystals of Cu 2MnAl, a ferromagnetic Heusler compound suitable for polarizing neutron monochromators, by means of optical floating zone under ultra-high vacuum compatible conditions. Unlike Bridgman or Czochralsky grown Cu 2MnAl, our floating zone grown single-crystals show highly reproducible magnetic properties and an excellent crystal quality with a narrow and homogeneous mosaic spread as examined by neutron diffraction. An investigation of the polarizing properties in neutron scattering suggests a high polarization efficiency, limited by the relatively small sample dimensions studied. Our study identifies optical floating zone under ultra-high vacuum compatible conditions as a highly reproducible method to grow high-quality single-crystals of Cu 2MnAl.
KW - Mosaicity
KW - Optical floating zone
KW - Polarized neutron scattering
KW - Polarizing monochromator
KW - Single crystal growth
UR - http://www.scopus.com/inward/record.url?scp=84863440008&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2012.06.012
DO - 10.1016/j.nima.2012.06.012
M3 - Article
AN - SCOPUS:84863440008
SN - 0168-9002
VL - 688
SP - 66
EP - 74
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
ER -