Crystal structure and thermal expansion of β-RbB5O8 from powder diffraction data

M. G. Krzhizhanovskaya, R. S. Bubnova, S. K. Filatov, A. Belger, P. Paufler

Research output

17 Citations (Scopus)

Abstract

Using Rietveld refinement the crystal structure of the β-rubidium pentaborate has been found to be isotypic with β-potassium pentaborate: (61) Pbca - (c)14, oP112, a = 7.550(1) Å, b = 11.842(1) Å, c = 14,805(1) Å, V = 1323.7(2) Å3, Z = 8, Dcalc = 2.68 · 103kg/m3. With the aid of high temperature X-ray diffractometry a strongly anisotropic thermal expansion has been observed: αa = 61·10-6 K-1, αb = 23 · 10-6K-1 and αc = 4.7 · 10-6K-1. This anisotropy may be caused by anisotropic thermal vibrations of heavy atoms as rubidium.

Original languageEnglish
Pages (from-to)740-743
Number of pages4
JournalZeitschrift fur Kristallographie
Volume215
Issue number12
Publication statusPublished - 1 Dec 2000

Fingerprint

Rubidium
rubidium
Thermal expansion
thermal expansion
Crystal structure
crystal structure
Rietveld refinement
expansion
diffraction
X ray diffraction analysis
Potassium
potassium
Anisotropy
Atoms
vibration
anisotropy
atoms
x rays
Temperature
Powder Diffraction

Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

Cite this

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title = "Crystal structure and thermal expansion of β-RbB5O8 from powder diffraction data",
abstract = "Using Rietveld refinement the crystal structure of the β-rubidium pentaborate has been found to be isotypic with β-potassium pentaborate: (61) Pbca - (c)14, oP112, a = 7.550(1) {\AA}, b = 11.842(1) {\AA}, c = 14,805(1) {\AA}, V = 1323.7(2) {\AA}3, Z = 8, Dcalc = 2.68 · 103kg/m3. With the aid of high temperature X-ray diffractometry a strongly anisotropic thermal expansion has been observed: αa = 61·10-6 K-1, αb = 23 · 10-6K-1 and αc = 4.7 · 10-6K-1. This anisotropy may be caused by anisotropic thermal vibrations of heavy atoms as rubidium.",
author = "Krzhizhanovskaya, {M. G.} and Bubnova, {R. S.} and Filatov, {S. K.} and A. Belger and P. Paufler",
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volume = "215",
pages = "740--743",
journal = "Zeitschfrift fur Kristallographie",
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publisher = "De Gruyter",
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}

Crystal structure and thermal expansion of β-RbB5O8 from powder diffraction data. / Krzhizhanovskaya, M. G.; Bubnova, R. S.; Filatov, S. K.; Belger, A.; Paufler, P.

In: Zeitschrift fur Kristallographie, Vol. 215, No. 12, 01.12.2000, p. 740-743.

Research output

TY - JOUR

T1 - Crystal structure and thermal expansion of β-RbB5O8 from powder diffraction data

AU - Krzhizhanovskaya, M. G.

AU - Bubnova, R. S.

AU - Filatov, S. K.

AU - Belger, A.

AU - Paufler, P.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - Using Rietveld refinement the crystal structure of the β-rubidium pentaborate has been found to be isotypic with β-potassium pentaborate: (61) Pbca - (c)14, oP112, a = 7.550(1) Å, b = 11.842(1) Å, c = 14,805(1) Å, V = 1323.7(2) Å3, Z = 8, Dcalc = 2.68 · 103kg/m3. With the aid of high temperature X-ray diffractometry a strongly anisotropic thermal expansion has been observed: αa = 61·10-6 K-1, αb = 23 · 10-6K-1 and αc = 4.7 · 10-6K-1. This anisotropy may be caused by anisotropic thermal vibrations of heavy atoms as rubidium.

AB - Using Rietveld refinement the crystal structure of the β-rubidium pentaborate has been found to be isotypic with β-potassium pentaborate: (61) Pbca - (c)14, oP112, a = 7.550(1) Å, b = 11.842(1) Å, c = 14,805(1) Å, V = 1323.7(2) Å3, Z = 8, Dcalc = 2.68 · 103kg/m3. With the aid of high temperature X-ray diffractometry a strongly anisotropic thermal expansion has been observed: αa = 61·10-6 K-1, αb = 23 · 10-6K-1 and αc = 4.7 · 10-6K-1. This anisotropy may be caused by anisotropic thermal vibrations of heavy atoms as rubidium.

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M3 - Article

AN - SCOPUS:0034509808

VL - 215

SP - 740

EP - 743

JO - Zeitschfrift fur Kristallographie

JF - Zeitschfrift fur Kristallographie

SN - 0044-2968

IS - 12

ER -