Marjorie Albino, Philippe Veber, Elias Castel, Matias Velázquez, Kurt Schenk, Gervais Chapuis, Michel Lahaye, Stanislav Pechev, Mario Maglione and Michaël Josse Growth and Characterization of Centimeter-Sized Ba2LaFeNb4O15 Crystals from High-Temperature Solution under a Controlled Atmosphere European Journal of Inorganic Chemistry 2013
Centimeter-sized Ba2LaFeNb4O15 (BLFNO) crystals are obtained by a flux method. A frequency-dependent dielectric permittivity maximum is found (Tm = 100 K at 5 kHz), which indicates relaxor behavior. Single-crystal XRD analysis reveals 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).
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