2014/02/04 by Koushik Karmakar, Amartya Singh, Surjeet Singh +2
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Anisotropy #Copper-based nanomaterials and applications #Crystal (programming language) #Crystal growth #Doping #Magnetic anisotropy #Magnetic susceptibility #Neutron diffraction #Physics of Superconductivity and Magnetism #Single crystal #cond-mat.str-el
paper · pdf · doi:10.1021/cg4016993
published as Crystal Growth & Design 14(3), 1184-1192 (2014) · 23 pages, 11 figures and 3 tables
openalex publication_date 2014/02/04 · arxiv created 2015/01/10 · arxiv updated 2015/01/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report on the crystal growth of the quasi-one-dimensional quantum spin chain compound SrCuO 2 and its doped variants containing magnetic cobalt (0.25%, 0.5%, 1%, and 2.5%) and nonmagnetic zinc (0.5% and 1%) impurities. Crystals are grown using the traveling solvent floating zone (TSFZ) method in a four-mirror optical furnace. Some crucial factors, key to the stability of a TSFZ process, including the choice of solvent composition and its associated melting behavior, are discussed in detail. The grown crystals were characterized using X-ray powder diffraction, scanning electron microscopy, optical microscopy, neutron single crystal diffraction and magnetic susceptibility measurements. Co-doping induces magnetic anisotropy and a corresponding change of magnetic behavior characterized by the presence of a sharp peak in the magnetic susceptibility at low-temperatures ( T = 5 K), which is not seen for the pristine compound. The peak position is shown to scale linearly with Co-concentration for low doping levels up to 2.5%.