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合成橡胶工业 |
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合成橡胶工业 |
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苯甲酸钆及苯甲酸钆/聚氨酯复合高分子材料的磁学性质
Magnetic property of benzoate gadolinium and Gd(BA)3/PU composite
刘力
张秀娟
张立群
摘 要：制备了苯甲酸钆及苯甲酸钆/聚氨酯复合材料,考察了二者的饱和磁化强度与温度的关系,推算出了苯甲酸钆的耐耳温度为-1.1K,具有反铁磁性质;苯甲酸钆/聚氨酯复合材料的磁化强底低于苯甲酸钆的磁化强度. |
Because of screen effect exerted by 5s26p6 electron- orbits, the environmental field has little influence on the single electrons in 4f orbits of rare earth(RE) ions, while those electrons are correspond for the magnetic property of RE. Therefore, RE organic complexes are rarely found to be ferromagnetic materials. But ever since the use of RE organic complexes as chemical shift agent (Pr3+ ) and relaxation agent (Gd3+ ) in nuclear magnetic resonance (NMR) for its paramagnetism, especially since recent discovery of ferromagnetic bridged multi- nuclei RE organic complexes, much more attention is paid to the magnetic property of RE organic complexes.…… |
| 基金项目：Supported by National Natural Science Foundation of China. 作者简介：Liu Li,doctoral student. Zhang Liqun,To whom all correspondence should be addressed. 刘力（北京化工大学材料科学与工程学院,北京,100029） 张秀娟（北京化工大学材料科学与工程学院,北京,100029） 张立群（北京化工大学材料科学与工程学院,北京,100029） 参考文献：
［1］Bencini A,Benelli C,Caneschi A,et al. J Am Chem Soc,1985,107:8 128
| 收稿日期：2001年12月18日 出版日期：2002年3月15日 |
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