Magnetic probing of tunable Eu3+ local site in organic-inorganic nanohybrids

被引：15

作者：

Amaral, VS ^{[1
]}

Carlos, LD

Bermudez, VD

机构：

[1] Univ Aveiro, Dept Fis, P-3810193 Aveiro, Portugal

[2] Univ Tras Os Montes & Alto Douro, Dept Quim, P-5001911 Vila Real, Portugal

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2001年 / 37卷 / 04期

关键词：

crystal field; dipolar interactions; Europium magnetism; nanoscopic magnetism; organic-inorganic hybrids;

D O I：

10.1109/20.951352

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The magnetic properties of sol-gel derived Eu3+-doped organic/inorganic hybrid nanocomposites were studied. These hybrids consist of poly(oxyethylene)-based chains of variable length grafted onto siloxane nanodomains by urea cross-linkages. Results are presented for two chain length series, for which the local environment of Eu3+ ions and the urea-urea interactions induce distinct magnetic behaviors. For high Eu3+ content strong thermal irreversibility effects are found, due to the presence of Eu3+ magnetic interactions in the nanodomains. Crystal field, dipolar interactions, Europium magnetism, nanoscopic magnetism, organic-inorganic hybrids.

引用

页码：2935 / 2937

页数：3

共 9 条

[1]

Bermudez VD, 1999, CHEM MATER, V11, P569

[2] White light emission of Eu3+-based hybrid xerogels [J].