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were characterized by a variety of techniques. The results of X-ray diffraction(XRD) show that there are two cleavage faces, which are(110) and(101). The peaks are in high intensity and good symmetry......
ferrites.Analysis of X-ray diffraction(XRD) patterns confirms the formation of single-phase perovskite structure and existence of orthorhombic Pnma symmetry for calcined powders. Field emission scanning......
).Enhanced optical properties were obtained by adding 3 wt% PEG under the excitation of 395 nm.Y3+with smaller radius was selected to substitute La3+ in this host to decrease the symmetry and further enhance......
Comparative Crystal Chemistry of Rare Earth Minerals杨主明,潘兆橹,张建洪摘 要:<正> Polyhedral analysis is used to study the geometrical limits of the crystal structure on isomorphic substitutionof rare earths.The rare earth sites in the structure may be distingu......
to the transitions from 5D0 excited state to 7FJ(J=0-4) ground states of Eu3+ ions.The feature and the high intensity of hypersensitive transition from 5D0→7F2 indicated that Eu3+ preferred to occupy a low symmetry......
scheelite form of SmCrO4 oxide was obtained by heating the zircon-type SmCrO4 oxide at 4 GPa and 803 K. X-ray diffraction revealed that this scheelite SmCrO4 phase crystallized with tetragonal symmetry......
in the K-Lu-F system optical materials,which also indirectly proved the phase evolution of the final products.The results suggested that there were many crystalline phases with different symmetry in the K......
occupied by Lu3+ or Zr/W sites were occupied by Y/W.As a result of the crystallographic occupancy of Eu3+ located at the cation positions without inversion symmetry,under O→Zr/W and O→Eu3+ ligand......
≤ 0.6, 0 ≤ y ≤ 0.5) were prepared at 1300°C through solid-state reaction. X-ray diffraction(XRD) analysis showed that the structure symmetry evolved from orthorhombic to cubic with increasing Mn......
Investigation of structural, morphological and electrochemical properties of mesoporous La2CuCoO6 rods fabricated by facile hydrothermal routeAshok Kumar1,2摘 要:This work introduces the facile hydrothermal synthesis of double perovskite La2CuCoO6. X-ray diffraction pattern confirmed the formation of a monoclinic phase with P121/c1 symmetry. Transmission......