An analytical model of the electrostatic force between the tip of a non-contact Atomic Force Microscope (nc-AFM) and the (001) surface of an ionic crystal is reported. The model is able to account for the atomic contrast of the local contact potential difference (CPD) observed while nc-AFM-based Kelvin Probe Force Microscopy (KPFM) experiments. With the goal in mind to put in evidence this shor...

The crystal structure of norsethite, BaMg(C03h, [a = 5.022(1) Á, e = 16.77(1) Á, space graup Rjm, Z = 3] was reinvestigated by single crystal X-ray methods working with both natural and synthetic material. The main features of an earlier structure determination using powder data were confirmed, but no significant deviation of the atomic arrangement from Rjm was found. The carbonate group is apl...

The atomic structure of a planar defect with a ~001! habit plane in single crystal layered perovskite SrBi2Ta2O9 is determined by high-resolution Z-contrast imaging. We found that the defect forms a structure, with two Sr–Ta–O perovskite blocks connected by a metallic Sr2 plane, rather than a Bi2O2 layer as in the perfect crystal. This defect is expected to be an efficient hole trap and may hav...

The crystal structures of highly-ordered Mg-Zn-Y long-period stacking-ordered (LPSO) phases with the 18R, 14H and 10H-type stacking sequences have been investigated by atomic-resolution scanning transmission electron microscopy (STEM) and transmission electron microscopy (Kishida et al., 2015) [1]. This data article provides supporting materials for the crystal structure analysis based on the c...

In the mol-ecule of the title compound, C(16)H(14)O(5), all non-H atoms are approximately co-planar [maximum atomic deviation = 0.064 (5) Å]. The hy-droxy group is a hydrogen-bond donor to a carbonyl O atom. Weak intermolecular C-H⋯O hydrogen bonding is present in the crystal structure. The crystal structure is 'whole-mol-ecule disordered' about an axis that runs approximately along the length ...

an octahedral cobalt(iii) complex, trans-[(me2bpb)co(bzlan)2]clo4 (1), with h2me2bpb = n,n’-(4,5-dimethyl-1,2-phenylene)dipicolinamide and bzlan = benzylamine, has been synthesized and characterized by elemental analyses, ir, uv-vis, and 1h nmr spectroscopy. the structure of this complex has been determined by x-ray crystallography. the me2bpb2– is a di-anionic tetradentate ligand furnishing a ...

sr6nb10o30–nb2o5 nanocomposite was synthesized in 2m naoh aqueous solution. a stoichiometric 1:1 sr:nb molar ratio hydrothermal method at 120°c was used to synthesize this nanocomposite. sr(no3)2 and nb2o5 were used as raw materials. the synthesized nanomaterials were characterized by powder x-ray diffraction (pxrd) technique. it was found that sr6nb10o30 was crystallized in tetragonal crystal ...

2,5,10,13-tetraazatricyclo [12,2,2,26,9] icosa-1(16),6,8,14,17,19-hexene-3,4,11,12-tetraone tetraoxime (1a) and 2,5,11,14-tetraazatricyclo [13,3,1,16,10] icosa-1(19),6,8,10(20),15,17-hexaene-3,4,12,13-tetraonetetraoxime (1b) were obtained from condensation of 1,4- and 1,3-phenylendiamine with dichloroglyoxime, respectively. the reaction of 1,2-phenylendiamine with dichloroglyoxime resulted in t...

self-assembly of densely packed zno nanorods were grown on porous silicon (ps) substrate by low-temperature chemical bath deposition. the structural and optical properties of the obtained zno nanostructures on ps substrate were systematically studied. the strong and sharp (002) peak compared with other peaks in the x-ray diffraction (xrd) indicated thatzno nanorods formed with superior orientat...