Structure determination of n=1 Ruddlesden-Popper compound HLaTiO4 by powder neutron diffraction

被引：16

作者：

Nishimoto, S

Matsuda, M

Harjo, S

Hoshikawa, A

Kamiyama, T

Ishigaki, T

Miyake, M ^{[1
]}

机构：

[1] Okayama Univ, Fac Environm Sci & Technol, Dept Environm Chem & Mat, Okayama 7008530, Japan

[2] High Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

[3] Muroran Inst Technol, Dept Mat Sci & Engn, Muroran, Hokkaido 0508585, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2006年 / 26卷 / 4-5期

关键词：

neutron diffraction; perovskites; X-ray methods; powders-solid state reaction;

D O I：

10.1016/j.jeurceramsoc.2005.07.001

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A protonated n = 1 Ruddlesden-Popper compound, HLaTiO4 (DLaTiO4), has been prepared by an ion-exchange reaction of Na+ ions in NaLaTiO4 with H+ (D+) ions, and its structure has been analyzed in order to clarify the location of protons in the interlayer space, using powder neutron diffraction data. The crystal structure of DLaTiO4 belongs to the same space group, P4/nmm, as that of parent NaLaTiO4, and the D atoms were found to statistically occupy eight equivalent sites around an apical O atom of a Ti06 octahedron in the interlayer, which are different from the Na atom sites in NaLaTiO4. A comparison between DLaTiO4 and NaLaTiO4 indicated that the protonation brought the shrinkage of the interlayer space and the distortion of the TiO6 octahedron. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：725 / 729

页数：5

共 17 条

[1] A new family of protonated oxides HLnTiO(4) (Ln=La, Nd, Sm, and Gd) [J].