Cation ordering in NiAl2O4 spinel by systematic row CBED
نویسندگان
چکیده
منابع مشابه
Magnetic Cation Distribution in Nanocrystalline Fe3O4 Spinel
Neutron diffraction study of nanostructured magnetite was performed at room temperature. The actual grain-size was determined from evaluation of X-ray diffraction profiles by the modified Williamson-Hall plot. The atomic structure parameters and the sublattice magnetic moments were determined using the Rietveld refinement of the neutron diffraction spectra. The sublattice magnetization at the o...
متن کاملCation Ordering in Complex Oxides
Several recent papers have addressed the fundamental aspects of the stability and kinetics of ordering in complex oxides, and investigated systems where the properties are mediated by the degree of order. Cation ordering reactions have been shown to induce large alterations in the dielectric, ferroelectric, magnetic, and electronic response of many complex oxides. The majority of the cited publ...
متن کاملCation Ordering Transformations
Single-phase perovskites were formed in the (1−x)Ba(Zn1/3Nb2/3)O3–(x)La(Zn2/3Nb1/3)O3 system for compositions with 0.0 ≤ x ≤ 0.6. Although the stability of the trigonal ‘‘1:2’’ ordered structure of the Ba(Zn1/3Nb2/3)O3 end member is very limited (0.0 ≤ x < 0.05), low levels of lanthanum induce a transformation to a cubic, ‘‘1:1’’ ordered structure that has a broad range of homogeneity (0.05 ≤ x...
متن کاملIn-situ neutron diffraction study of non-convergent cation ordering in the (Fe3O4)1-x(MgAl2O4)x spinel solid solution
Non-convergent cation ordering in the (Fe3O4)1-x(MgAl2O4)x solid solution was investigated using in-situ time-of-flight neutron powder diffraction. The approach to equilibrium in a sample with x = 0.75 was observed at 923 K by performing in-situ structure refinements at intervals of 5 min, and the ordering behavior was traced through the time-dependence of the lattice parameter, the cation-oxyg...
متن کاملTwo-stage ordering for unsymmetric parallel row-by-row frontal solvers
The row-by-row frontal method may be used to solve general large sparse linear systems of equations. By partitioning the matrix into (nearly) independent blocks and applying the frontal method to each block, a coarse-grained parallel frontal algorithm is obtained. The success of this approach depends on preordering the matrix. This can be done in two stages, (1) order the matrix to bordered blo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nihon Kessho Gakkaishi
سال: 1998
ISSN: 0369-4585,1884-5576
DOI: 10.5940/jcrsj.40.supplement_195