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language
eng
Author
Nagashima, Mariko
Akasaka, Masahide
Description
X-ray powder diffraction patterns of Ca_2Al_3Si_3O_<12>(OH)-Ca_2Mn^<3+>_3Si_3O_<12>(OH)series synthetic piemontites were simulated with the Rietan-2000 program to clarify the X-ray powder diffraction pattern of piemontite,using cell parameters,site occupancies and atomic positions refined by the X-ray RIETVELD method.The compositions of Ca_2Al_<3-p>Mn^<3+>_pSi_3O_<12>(OH)-piemontites used were p=0.5,0.75,1.0 and 1.25.The d-values of the strongest line in the simulated powder patterns show a nonlinear variation comparable to nonlinear changes in unit-cell parameters.The calculated powder patterns are very useful for indexing the Miller indices to each reflection in X-ray powder diffraction patterns of natural piemontite,to avoid misindexing and miscalculation of the unit-cell parameters.By comparison with these simulated X-ray powder patterns,we can evaluate the effects of preferred orientation in measured X-ray powder diffraction patterns,which is important for X-ray powder crystal structure analysis.
Journal Title
島根大学地球資源環境学研究報告
Volume
22
Start Page
161
End Page
166
ISSN
13439774
Published Date
2003-12-27
NCID
AA11455176
DOI(SelfDOI)
Publisher
島根大学総合理工学部地球資源環境学教室
Publisher Aalternative
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
Remark
12-14,16+ / 1993+
飯泉滋教授・山内靖喜教授 退官記念特集号
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