Epifluorescence microscopy study of a quadruple node of triple junctions of grain boundaries in a Eu-decorated highly textured composite of (Cl, Br)(K, Rb) and I(K, Rb) solid solutions.

The structural nature and geometry, as well as the lattice-relative orientation, of an arrangement of crystal defects in a highly textured Eu-doped composite of two alkali-halide solid solutions was studied by epifluorescence microscopy (EFM) using the doping ion as a fluorochrome. A three-dimensional reconstruction and a skeleton type model, as built from a sequence of EFM images of different optical cross-sections of this arrangement, are presented. Structurally, this arrangement is a quadruple node (QN) of triple junctions of grain boundaries.

Quadruple node of triple junctions of grain boundaries in a Eu2+-doped solid solution of the ions K+, Rb+, Cl- and Br-: an epifluorescence microscopy study using the doping ion as a fluorochrome.

Epifluorescence microscopy was used to unveil the geometry and relative spatial orientation of an arrangement of crystal defects, consisting of a quadruple node of triple junctions of grain boundaries, in a Eu2+-doped solid solution of K+, Rb+, Cl- and Br-. The doping ion was utilized as a fluorochrome. Microscopy images of different optical cross-sections of the arrangement of crystal defects under study were recorded and used to build an electronic three-dimensional reconstruction of this arrangement.

Morphology and orientated growth of second-phase precipitates in a Eu2+-doped equimolar KCl:KBr solid solution: an epifluorescence microscopy study by using the doping ion as a fluorochrome.

The shape and orientation of second-phase precipitates in a Eu2+-doped equimolar KCl:KBr solid solution are reported in this paper as they were unveiled by epifluorescence microscopy. To make this, microscopy images of different optical cross sections of some precipitate fields and, also, of some representative precipitates in these fields, were recorded by using the Eu2+ ion itself as a fluorochrome. From these images, the corresponding precipitate fields and individual precipitates were electronically reconstructed into the host lattice space.

Epifluorescence microscopy study of a quadruple node of triple junctions of grain boundaries in a Eu -doped Kcl:Kbr solid solution by using the doping ion as a fluorochrome.

A typical quadruple node (QN) of triple junctions (TJs) of grain boundaries (GBs) in a Eu -doped KCl Br solid solution is investigated from the geometrical point of view by epifluorescence microscopy using the doping ion as a fluorochrome. The excitation and fluorescence optical properties of the fluorochrome were previously characterised by spectrophotometry whereas the structural nature of the studied material as well as its Bravais lattice type, unit cell size and long-range translational order degree was determined by X-ray diffraction. A three-dimensional reconstruction was built from the microscopy images of different optical cross-sections of the studied arrangement of crystal defects.

Geometry and spatial orientation of a quadruple node of triple junctions in a europium-doped KI crystal as determined by epifluorescence microscopy.

The geometry and spatial orientation of a typical arrangement of four triple junctions and six grain boundaries sharing a common quadruple node in a Eu -doped KI crystal are investigated by epifluorescence microscopy using the proper doping ion as a fluorochrome. To achieve this, an electronic three-dimensional reconstruction of the studied arrangement of crystal defects was built from microscopy images of different optical cross-sections of this arrangement. Previously, the doping ions were induced, by subjecting the crystal to a long annealing treatment, to form europium precipitates into the crystal grain boundaries.