Arrangement of K clusters in the K-doped zeolite K-LTA

被引：0

作者：

Ikeda, T ^{[1
]}

Kodaira, T

Izumi, F

Kumazawa, S

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

[2] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan

[3] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan

[4] KEK, Neutron Sci Lab, Tsukuba, Ibaraki 3050801, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2000年 / 341卷

关键词：

zeolite; cluster; X-ray powder diffraction; Rietveld analysis; maximum-entropy method;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

K clusters incorporated into zeolite K-LTA causes ferromagnetism below 8 K. Distribution of K+ ions in its alpha-cages was studied by X-ray powder diffraction. On the basis of space group F23, electron-density distribution was determined by Rietveld analysis followed by iteration of analysis by a maximum-entropy method and whole-pattern fitting. K+ ions were located in alpha-cages in such a way that K clusters between adjacent alpha-cages are not equivalent to each other, which will lead to the ferromagnetism with antiferromagnetic components.

引用

页码：1251 / 1256

页数：6

共 12 条

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