Indistinct Defect Images in Topographs of Nearly Perfect Aluminum Crystals Just Prior to Appearance of Dislocation Loops

We describe a small furnace for transmission diffraction imaging studies, designed to (i) go up to 800 °C while having a temperature gradient as reduced as possible on a platelet‐shaped insulating sample, (ii) allow a large and homogeneous beam to be transmitted/diffracted and (iii) preserve the coherence properties of these transmitted and diffracted beams, which are recorded at variable crystal‐to‐detector distances (typically 2–200 cm). We report experiments, to test the temperature gradient, on the ferroelectric to paraelectric transition of BaTiO3, and to check the preservation of the coherence properties of the beam, which include the observation of ferroelectric domains in a poled LiNbO3 crystal.

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A furnace for coherent beam transmission topography applied to ferroelectric crystals

Pernot

Gorges

Vitoux

et al. 2009

Physica Status Solidi (a)

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Indistinct Defect Images in Topographs of Nearly Perfect Aluminum Crystals Just Prior to Appearance of Dislocation Loops

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References 6 publications

A furnace for coherent beam transmission topography applied to ferroelectric crystals

A furnace for coherent beam transmission topography applied to ferroelectric crystals

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