New Ferroelectrics Based on Divalent Metal Ion Alum

被引：135

作者：

Zhang, Wen ^{[1
]}

Chen, Li-Zhuang ^{[1
]}

Xiong, Ren-Gen ^{[1
]}

Nakamura, Takayoshi ^{[2
]}

Huang, Songping D. ^{[3
]}

机构：

[1] Southeast Univ, Ordered Matter Sci Res Ctr, Nanjing 211189, Peoples R China

[2] Hokkaido Univ, Res Inst Elect Sci, Sapporo, Hokkaido, Japan

[3] Kent State Univ, Dept Chem, Kent, OH 44240 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 35期

关键词：

CRYSTAL-STRUCTURE; FRAMEWORK;

D O I：

10.1021/ja905399x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A detailed study of two alum-type complexes containing the SeO42- anion, 1,4-diazoniabicyclo[2.2.2]octane hexaaquacopper(II) bis(selenate) [(H(2)dbco)Cu(H2O)(6)(SeO4)(2), 1] and its deuterated analogue (D(2)dbco)Cu(D2O)(6)(SeO4)(2) (2), has revealed that 1 and 2 are new ferroelectrics that undergo a paraelectric-ferroelectric phase transition at ca. -140 to -138 degrees C as a result of order-disorder features of the cation ([H(2)dbco](2+) or [D(2)dbco](2+)) and anion (selenate). These are the first examples of ferroelectrics based on divalent metal anion alum analogues since the discovery of ferroelectrics based on trivalent metal anion alum in similar to 1960.

引用

页码：12544 / +

页数：4

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