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Presents a study which investigated the ferroelectric-ferroelastic properties of potassium[sub3] iron[sub5]fluorine[sub15] and the phase transition at 490 potassium. Preparation and crystal growth; Information on the dielectric permitivity; Discussion of the ferroelectric-ferroelastic phase transition at potassium.

Push-broom HSI-cameras have a high spectral resolution but require scanning and stitching to get a correct spatial and spectral representation of a scene. The conventional approach is to calculate a scanning velocity that matches the camera’s frame rate so that the stitching becomes trivial. For this to work one needs to be able to apply the velocity steadily and know the distance between camera and subject. This contribution presents a feature-based approach that directly determines the distance the subject was moved between the images and uses it to correctly stitch the images. It is used in a self-contained environment consisting of a lightprotected box with a light source inside and a linear guide unit that moves the object under examination. The distance between camera and object can be altered to increase the spatial resolution for small objects. It is shown that our stitching approach works even if the velocity changes during scanning. If the distance of the camera is altered, e. g. to scan a larger object, the stitching is adjusted automatically without the need for manual intervention.

Provides information on a study which investigated the composition of ferroelectric-ferroelastic components and their corresponding phase transition. Effect of temperature on ferroelectric materials; Discussion of the phase transition of the components; Behavior of iron atoms.