Growth and characterization of centimeter-sized Ba2LaFeNb4O15 crystals from high-temperature solution under a controlled atmosphere
VEBER, Philippe
Centre National de la Recherche Scientifique [CNRS]
Universitatea de Vest din Timișoara [România] = West University of Timișoara [Romania] = Université Ouest de Timișoara [Roumanie] [UVT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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Centre National de la Recherche Scientifique [CNRS]
Universitatea de Vest din Timișoara [România] = West University of Timișoara [Romania] = Université Ouest de Timișoara [Roumanie] [UVT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
VEBER, Philippe
Centre National de la Recherche Scientifique [CNRS]
Universitatea de Vest din Timișoara [România] = West University of Timișoara [Romania] = Université Ouest de Timișoara [Roumanie] [UVT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
< Reduce
Centre National de la Recherche Scientifique [CNRS]
Universitatea de Vest din Timișoara [România] = West University of Timișoara [Romania] = Université Ouest de Timișoara [Roumanie] [UVT]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Language
en
Article de revue
This item was published in
European Journal of Inorganic Chemistry. 2013 n° 15, p. 2817-2825
Wiley-VCH Verlag
English Abstract
Centimeter-sized single crystals of Ba2LaFeNb4O15 were grown from a high-temperature solution by using LiBO2 flux and a sealed platinum assembly. The obtained single crystals display the same physical properties as their ...Read more >
Centimeter-sized single crystals of Ba2LaFeNb4O15 were grown from a high-temperature solution by using LiBO2 flux and a sealed platinum assembly. The obtained single crystals display the same physical properties as their ceramic counterparts. A frequency-dependent dielectric permittivity maximum was found (Tm = 100 K at 5 kHz), which indicates relaxor behavior. Magnetic susceptibility measurements revealed purely paramagnetic behavior between 10 and 350 K. X-ray diffraction measurements of Ba2LaFeNb4O15 single crystals revealed an incommensurate structure at room temperature with a bidimensional modulation characterized by vectors q1 = (α, α, 1/2) and q2 = (α, -α, 1/2) with α = 0.295(1). This crystal growth method offers a promising elaboration route to centimeter-sized crystals of niobate-based compounds, which may not be grown from the pure liquid phase, especially those with a tetragonal tungsten bronze (TTB) structure.Read less <
English Keywords
Crystal growth
Crystal growth
Solid-state structures
Flux methods
Barium
Niobium
Relaxors
Origin
Hal imported