Research output: Contribution to journal › Article › peer-review
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: Contribution to journal › Article › peer-review
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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.
UR - http://www.scopus.com/inward/record.url?scp=0034509808&partnerID=8YFLogxK
U2 - 10.1524/zkri.2000.215.12.740
DO - 10.1524/zkri.2000.215.12.740
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 -
ID: 47838545