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X-ray powder diffraction analysis of adducts triglycine fluoroberyllic acid and triglycine selenic acid for pyroelectric application

  • Yunxia Che (a1), Jimin Zheng (a1), Jianmin Hao (a2) and Lianqing Chu (a2)

Abstract

Two adducts (NH2CH2COOH)3⋅H2BeF4(TGFb) and (NH2CH2COOH)3⋅H2SeO4(TGSe) were obtained and characterized by X-ray powder diffraction. The samples were indexed using the TREOR program [Werner, Z. Kristallogr. Kristallogeom. Kristallphys. Kristallchem. 120, 375–387 (1964)] on a monoclinic unit cell. The lattice parameters of adducts TGFb and TGSe were refined by a least-squares method using the Lattice Constant Refinement Program of the Rikagu software. The refined lattice parameters are a=9.1589(9) Å, b=12.6204(13) Å, c=5.6966(8) Å, β=105.451(9)° for TGFb. The Smith and Snyder figure [Smith and Snyder, J. Appl. Crystallogr. 12, 60–65 (1979)] is F30=39.4(0.0141,54). The refined lattice parameters a=9.5063(11) Å, b=12.8281(10) Å, c=5.8682(7) Å, β=110.353(77)° for TGSe. The Smith and Snyder figure is F30=39(0.0106,73). The powder diffraction results are in agreement with those obtained from single crystal structure data.

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Pepinsky, R., et al. (1956). “Ferroelectricity and structure of triglycine fluoberyllate and isomorphism,” Bull. Am. Phys. Soc. BAPSA6 II, 220. bap, BAPSA6
Smith, G. S., and Snyder, R. L. (1979). “FN: A criterion for rating powder diffraction patterns and evaluating the reliability of powder pattern indexing,” J. Appl. Crystallogr. JACGAR 12, 6065. acr, JACGAR
Werner, P. E. (1964). Z Kristallogr, Kristallgeom., Kristallphys., Kristallchem. ZKKKAJ 120, 375387., ZKKKAJ

X-ray powder diffraction analysis of adducts triglycine fluoroberyllic acid and triglycine selenic acid for pyroelectric application

  • Yunxia Che (a1), Jimin Zheng (a1), Jianmin Hao (a2) and Lianqing Chu (a2)

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