LOW-TEMPERATURE STRUCTURE OF K2BA(NO2)4

被引：4

作者：

IWATA, Y ^{[1
]}

SHIBUYA, I ^{[1
]}

ISHIBASHI, Y ^{[1
]}

机构：

[1] NAGOYA UNIV,FAC ENGN,SYNTHET CRYSTAL RES LAB,CHIKUSA KU,NAGOYA 46401,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1991年 / 60卷 / 07期

关键词：

K2BA(NO2)4; STRUCTURE ANALYSIS; PHASE TRANSITION; FERROELASTIC DOMAIN; NO2; IONS;

D O I：

10.1143/JPSJ.60.2139

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The crystal structure of the low-temperature phase (gamma-phase) of the dipolar frustrated crystal K2Ba(NO2)4 was determined at -120-degrees-C by X-ray measurement of superlattice reflections. A superlattice model proposed for the gamma-phase has been refined. The space group is reasonably assigned as monoclinic C 2/m-C2h3, and the configurations of all the NO2 groups are found to be ordered. The symmetry agrees with the theoretical prediction made by Ishibashi et al., implying that the gamma-phase is ferroelastic.

引用

页码：2139 / 2142

页数：4

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