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| 一价Na元素对LaMnO_3母体A位掺杂的磁电性质研究(英文) | |
| 引用本文： | 刘宁,唐永刚,严国清,毛强,郭焕银,彭振生.一价Na元素对LaMnO_3母体A位掺杂的磁电性质研究(英文)[J].稀有金属材料与工程,2008,37(11). |
| 作者姓名： | 刘宁 唐永刚 严国清 毛强 郭焕银 彭振生 |
| 作者单位： | 1. 宿州学院物理系,安徽宿州,234000 2. 宿州学院,自旋电子与纳米材料安徽省重点实验室培育基地,安徽,宿州,234000 3. 南京大学,固体微结构物理国家重点实验室,江苏,南京,210093;宿州学院,自旋电子与纳米材料安徽省重点实验室培育基地,安徽,宿州,234000 |
| 基金项目： | 国家自然科学基金 ， 科技部科研院所技术开发研究专项基金 ， Nature Science Foundation of the Anhui Higher Education Institutions of China |
| 摘 要： | 通过测量La1-xNaxMnO3(x=0.05,0.10,0.15,0.20,0.25,0.33)体系的M-T曲线和R-T曲线,研究了La位Na掺杂对体系磁电性质的影响.结果发现:随着Na掺杂浓度的增加,体系居里温度Tc升高,顺磁-铁磁相变逐渐变陡;伴随着顺磁-铁磁相变,体系发生金属-绝缘体相变,电阻随掺杂浓度增加而下降.体系磁电性质的变化来源于掺杂引起的Mn3+-O-Mn4+间的双交换作用、静态Jahn-Teller畸变和公差因子的变化. |
| 关 键 词： | 磁电性质 双交换作用 静态Jahn-Teller畸变 公差因子 |
Magneto-Electric Properties of LaMnO_3 with Monovalent Na Element Doping at A Site |
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| Liu Ning,Tang Yonggang,Yan Guoqing,Mao Qiang,Guo Huanyin,Peng Zhensheng.Magneto-Electric Properties of LaMnO_3 with Monovalent Na Element Doping at A Site[J].Rare Metal Materials and Engineering,2008,37(11). | |
| Authors: | Liu Ning Tang Yonggang Yan Guoqing Mao Qiang Guo Huanyin Peng Zhensheng |
| Affiliation: | Liu Ning 1,Tang Yonggang 1,Yan Guoqing 1,2,Mao Qiang 1 Guo Huanyin 1,Peng Zhensheng 1 (1.Anhui Key Laboratory of Spin Electron , Nanomaterials(Cultivating Base),Suzhou College,Suzhou 234000,China) (2.National Laboratory of Solid State Microstructures,Najing University,Najing 210093,China) |
| Abstract: | By measuring M-T curves and R-T curves of the samples La1-xNaxMnO3(x=0.05,0.10,0.15,0.20,0.25,0.33),the influence of Na doping at La site on the magneto-electric properties was investigated.Our experiment results shows that, Curie temperature TC increases and paramagnetic-ferromagnetic transition becomes steeper with increasing of Na content;All samples exhibit a paramagnetic-ferromagnetic transition associated with metal-insulator transition whereas the values of resistance decrease with the doping concent... |
| Keywords: | magneto-electric property double-exchange function static Jahn-Teller distortion tolerance factor |
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