Preparation and magnetic properties of CoWO4 nanocrystals

被引：26

作者：

Deng, Jiwei ^{[1
]}

Chang, Liao ^{[2
]}

Wang, Ping ^{[3
]}

Zhang, Endi ^{[1
]}

Ma, Jianmin ^{[1
]}

Wang, Taihong ^{[1
]}

机构：

[1] Hunan Univ, State Key Lab Chemobiosensing & Chemometr, Minist Educ, Key Lab Micronano Optoelect Devices, Changsha 410082, Hunan, Peoples R China

[2] Univ Southampton, Natl Oceanog Ctr, Southampton SO14 3ZH, Hants, England

[3] City Univ Hong Kong, Dept Biol & Chem, Hong Kong, Hong Kong, Peoples R China

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2012年 / 47卷 / 09期

关键词：

CoWO4; hydrothermal synthesis; magnetic properties; COBALT TUNGSTATE; NANO-PARTICLES; NANOSTRUCTURES; NIWO4;

D O I：

10.1002/crat.201200130

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Cobalt tungstate (CoWO4) nanocrystals with an average size of 2050 nm were synthesized via a template- or surfactant-free hydrothermal route. The crystal structure and morphology of the as-synthesized CoWO4 sample were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Magnetic measurements on the as-synthesized CoWO4 nanocrystals indicate a Neel temperature (TN) of similar to 40 K. This lower TN may be a result of the nanostructured particles that reduce the exchange coupling. The new synthetic route presented in this paper has potential applications to fabricate other metal tungstates (MWO4) materials.

引用

页码：1004 / 1007

页数：4

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