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A furnace for coherent beam transmission topography applied to ferroelectric crystals
Author(s) -
Pernot Petra,
Gorges Bernard,
Vitoux Hugo,
Kluender Rafael,
Masiello Fabio,
Baruchel José
Publication year - 2009
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200881587
Subject(s) - diffraction , ferroelectricity , optics , beam (structure) , materials science , coherence (philosophical gambling strategy) , dielectric , coherence length , crystal (programming language) , homogeneous , transmission (telecommunications) , detector , optoelectronics , physics , condensed matter physics , telecommunications , superconductivity , quantum mechanics , computer science , thermodynamics , programming language
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 BaTiO 3 , and to check the preservation of the coherence properties of the beam, which include the observation of ferroelectric domains in a poled LiNbO 3 crystal.