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Preparation of Ti-less aliovalent substituted isomorphs of KTiOPO4

Published online by Cambridge University Press:  31 January 2011

Valery I. Chani ,
Kiyoshi Shimamura ,
Shinji Endo  and
Tsuguo Fukuda
Valery I. Chani*
Affiliation:
Center for Interdisciplinary Research, Tohoku University, Aramaki aza Aoba, Aoba-ku, Sendai, 980-8578, Japan
Kiyoshi Shimamura
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
Shinji Endo
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
Tsuguo Fukuda
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
*
a)Address all correspondence to this author. e-mail: chani@lexus.imr.tohoku.ac.jp
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Abstract

KTiOPO4 (KTP) phase formation in stoichiometric mixtures corresponding to chemical formulas of {A1} [B5+1/2C3+1/2]O(D5+)O4 (A = K+; B = Nb5+ and Ta5+; C = Al3+, Cr3+, Ga3+, Fe3+, and In3+; and D + P5+ and As5+), and {A+} [B5+2/3C2+1/3]O(D5+)O4 (C = Mg2+ and Zn2+) prepared by solid-state reaction technique is reported. It was found that the mixtures containing Nb5+, Ga3+, Fe3+, and As5+ form the longest series of members of the KTP structural family. KTP phase formation was detected by x-ray powder diffraction analysis. Comparison of the lattice parameters measured with those known for the nonsubstituted crystals of the KTP family was carried out. The data obtained were used for the discussion of variations of KTP structural stability on composition.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 6 , June 1999 , pp. 2458 - 2463
Copyright
Copyright © Materials Research Society 1999

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References

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