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公开时间: 2010-06-16      申请时间: 2009-12-31
申请人: UNIV XIAMEN

CN101734724A
patent for invention


标题(英语)

Ferromagnetic bismuth ferrite and the synthesis method thereof


摘要(英语)

The invention relates to ferromagnetic bismuth ferrite and the synthesis method thereof, the material related is a multi-frruginous material. The invention provides ferromagnetic bismuth ferrite with ferromagnetism at room temperature and a synthesis method thereof. Ferromagnetic bismuth ferrite is a red power with the chemical formula BiFeO3. It has ferroelectric and ferromagnetic nature at roomtemperature. Ferric oxide and bismuth oxide are placed into tartaric acid or other carbohydrates and grinded into mixture. The mixture is heated to cause combustion and bismuth ferrite can be obtained after the complete combustion of the mixture. The bismuth ferrite is then expurgated of the unreacted ferric oxide and bismuth oxide by rinsing until a neutral environment. The rinsed bismuth ferrite is then parched to obtain ferromagnetic bismuth ferrite. The ferromagnetic bismuth ferrite obtained has ferroelectric and ferromagnetic nature at room temperature. The method of the invention improves the solid-phase synthesis and simplifies the steps and does not require high-energy grinding. The reaction temperature is also greatly lowered than the traditional solid-phase synthesis by the method and thus saves energy. The duration of the reaction is relatively short, with the whole reaction process shorter than 10 minutes, and thus the efficiency is enhanced. The synthesis method of the invention does not require complicated equipments or high-energy ball mill or high temperature furnace.


申请人详细信息

序号 名称 数据格式
1 UNIV XIAMEN docdb

发明人详细信息

序号 名称 数据格式
1 SHAOYU MAO docdb
2 JIANGTAO WU docdb
3 ZHAOXIONG XIE docdb

法律状态

序号 日期 法律代码 详细信息
1 20100616 C06 PUBLICATION
2 20100901 C10 ENTRY INTO SUBSTANTIVE EXAMINATION
3 20121212 C14 GRANT OF PATENT OR UTILITY MODEL
4 20170222 EXPY TERMINATION OF PATENT RIGHT OR UTILITY MODEL

被引非专利信息

引用阶段 文档类型 文档信息

文档历史

公开时间: 2010-06-16
CN101734724A
申请时间: 2009-12-31
CN200910113124
优先权时间: 2009-12-31
CN200910113124

优先权时间: 2008-05-07
CN200810106040

优先权时间: 2008-04-21
CN200810036389

CPC分类


IPC分类

C01G49/00

专利家族

42458838
专利大数据平台