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Floating-zone growth of large high-quality CoAl2O4 single crystals |
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| Authors: | A Maljuk V Tsurkan V Zestrea O Zaharko A Cervellino A Loidl DN Argyriou |
| Institution: | 1. Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109 Berlin, Germany;2. Institute of Applied Physics, Academy of Sciences, MD-2028 Chisinau, R. Moldova;3. Experimental Physics V, Center for Electronic Correlations and Magnetism, University of Augsburg, D 86159 Augsburg, Germany;4. Laboratory for Neutron Scattering, ETH Zurich and Paul Scherrer Institute, CH-5232 Villigen, Switzerland;5. Laboratory for Synchrotron Radiation II, Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland |
| Abstract: | We report the first successful floating-zone growth of high-quality CoAl2O4 single crystals with volume up to 1 cm3 free from inclusions and sub-grains. The neutron rocking curves of the CoAl2O4 crystal have the width of about 0.30 degree proving the excellent quality of the grown samples. X-ray synchrotron experiments show that crystals have spinel structure with the lattice constant a0=8.09853(1) Å. Magnetization measurements give the effective magnetic moment μeff=4.63 μB per Co+2 ion in a good agreement with previous measurements on ceramic samples. |
| Keywords: | 81 10 Fq 81 05 Zx |
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