|
|||||
|
|
| Pd/γ-Al2O3催化剂上甲烷-氘化氢之间的氢氘交换性能研究 | |
| 引用本文： | 韩军.Pd/γ-Al2O3催化剂上甲烷-氘化氢之间的氢氘交换性能研究[J].稀有金属材料与工程,2010,39(5):874-877. |
| 作者姓名： | 韩军 |
| 作者单位： | 1. 安徽科技学院,安徽,凤阳,233100;宿州学院,安徽,宿州,234000 2. 宿州学院,安徽,宿州,234000;南京大学,南京,210093 3. 宿州学院,安徽,宿州,234000 |
| 基金项目： | 国家重大基础研究课题，国家自然科学重点基础研究项目，安徽省教育厅自然科学研究项目，和安徽省教育厅自然科学研究重大项目 |
| 摘 要： | 通过M-T、M-H曲线的测量,研究Dy掺入对La0.7Sr0.3CoO3体系磁性的影响.结果表明,随着Dy含量的增加,样品Tc降低、M值减弱、矫顽力增强,并出现低温下M随着T的降低继续增大的反常现象.研究表明,体系磁性的变化来源于Dy掺入引起晶格参数的改变和磁环境的改变,以及Dy离子诱导的Co离子自旋态的转变. |
| 关 键 词： | La0.7Sr0.3CoO3体系 团簇玻璃态 自旋态转变 |
| 收稿时间： | 5/5/2009 12:00:00 AM |
| 修稿时间： | 2010/8/14 0:00:00 |
Effect of Dy Doping on Magnetism of La0. 7Sr0.3CoO3 System |
|
| hanjun.Effect of Dy Doping on Magnetism of La0. 7Sr0.3CoO3 System[J].Rare Metal Materials and Engineering,2010,39(5):874-877. | |
| Authors: | hanjun |
| Affiliation: | Anhui Science and Technology University, Fenyang 233100, China;Suzhou College, Suzhou 234000, China;Suzhou College, Suzhou 234000, China;Suzhou College, Suzhou 234000, China;Suzhou College, Suzhou 234000, China |
| Abstract: | The effect of Dy doping on magnetism of La0.7Sr0.3CoO3 system was studied through the measurements of M-T curves and M-H curves. The results show that with Dy content increasing, Tc is decreased, M weakened, the coercive force strengthened, and the samples exhibit the abnormal phenomenon that M increases continuously with T decreasing in low temperature range. The research indicates that the variation of magnetism in the system comes from the changes of lattice parameters and magnetic environment caused by Dy doping, and from the spin state transition of Co ions induced by Dy ions. |
| Keywords: | La0 7Sr0 3CoO3 system cluster glass state spin state transition |
| 本文献已被 万方数据 等数据库收录！ | |
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 | |
| 点击此处可从《稀有金属材料与工程》下载全文 | |