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TTB Structure of K4Ce2M10O30(M= Nb or Ta): Crystal Growth and Joint X-Ray and HREM Studies
✍ Scribed by Fouad Brik; Renée Enjalbert; Christian Roucau; Jean Galy
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 503 KB
- Volume
- 122
- Category
- Article
- ISSN
- 0022-4596
No coin nor oath required. For personal study only.
✦ Synopsis
investigation by electron microscopy at high resolution (HREM) establishes the remarkable regularity of the lattice, making it K 4 Ce 2 Nb 10 O 30 and K 4 Ce 2 Ta 10 O 30 phases have been synthesized possible to precisely localize the various metals Nb, Ce, respectively at 1200 and 1250؇C. Single crystals grown at high and K.
📜 SIMILAR VOLUMES
The crystal structure of La(H 2 O) 2 K(C 2 O 4 ) 2 ' H 2 O has been solved ab initio from powder di4raction data collected with conventional monochromatic X-rays. The symmetry is monoclinic, space group C2/m, cell dimensions a ؍ 22.033(1) A > , b ؍ 7.6003(5) A > , c ؍ 6.6418(4) A > , ؍ 103.8
6.57 (3) belonging to this family, are re5ned in the cubic space group Fd3 m (Z ؍ 8; lattice parameter a ؍ 10.762(1), 10.744(1), 10.757(5) A s , respectively) using the Rietveld re5nement approach. The analyses suggest that the B-site is partially occupied by Pb leading to the general formula P