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Spontaneous birefringence in boracites. Measurements and applications

Tippmann, Heinz
Published in Ferroelectrics. 1978, vol. 20, no. 1-2, p. 21-36
Abstract The temperature dependence was studied of the spontaneous birefringence of the fully ferroelectric or ferroelastic phases of 21 boracite crystals with the formula M3B7O13X (M = Mg, Cr, Mn, Fe, Co, Ni, Cu, Zn, or Cd; X = Cl, Br, or I). First-order phase transitions were observed with 3 types of sequences. The crystallophysical and potential technology applications of spontaneous birefringence are discussed.
Keywords Birefringence boracite ferroelectricity ferroelasticityPhase transition boracite birefringenceChromium chloride boracite birefringenceManganese halide boracite birefringenceIron halide boracite birefringenceCobalt halide boracite birefringenceNickel halide boracite birefringenceZinc halide boracite birefringenceCopper halide boracite birefringenceCadmium halide boracite birefringenceBromide boracite transition metal birefringenceIodide boracite transition metal birefringence
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SCHMID, Hans, TIPPMANN, Heinz. Spontaneous birefringence in boracites. Measurements and applications. In: Ferroelectrics, 1978, vol. 20, n° 1-2, p. 21-36. doi: 10.1080/00150197808239427

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