CRYSTAL-GROWTH AND MAGNETIC CHARACTERIZATION OF ZN1-XMNXCR2O4 SINGLE-CRYSTALS

Single crystals of Zn1-xMnxCr2O4, where x = 0-1, were grown by the che mical vapour transport (CVT) technique using chlorine as the transport agent. A thermodynamic study of both systems, (ZnCr2O4 + MnCr2O4)-Cl2 and Zn1-xMnCr2O4-Cl2, was done in order to investigate the effect of spurious species, i.e. MnCl2(liq), on the transport of the mixed spine l, and structural investigations using X-ray diffraction were carried out. Susceptibility measurements as a function of temperature from 2-3 00 K for the different compositions are reported, and the magnetic pha se diagram was determined as a function of composition and temperature .