| 烧结温度对钙钛矿锰氧化物颗粒表面覆Ag的二相复合体系磁电阻的影响 |
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| 引用本文： | 杨刚,彭振生,宋启祥,王桂英,唐永刚,牛晓飞,刘鹏. 烧结温度对钙钛矿锰氧化物颗粒表面覆Ag的二相复合体系磁电阻的影响[J]. 宿州学院学报, 2010, 25(2): 31-35,41. DOI: 10.3969/j.issn.1673-2006.2010.02.010 |
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| 作者姓名： | 杨刚 彭振生 宋启祥 王桂英 唐永刚 牛晓飞 刘鹏 |
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| 作者单位： | 1. 宿州学院,自旋电子与纳米材料安徽省重点实验室,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,安徽,宿州,234000;中国科学技术大学,结构分析重点实验室,安徽,合肥,230026 |
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| 基金项目： | 国家自然科学基金重点项目，安徽省教育厅自然科学研究重大项目，安徽省高等学校自然科学研究项目 |
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| 摘 要： | 用固相反应法采用不同烧结温度，制备二相复合体系。分别选用La0.6Dy0.1Sr0.3MnO3和La0.5Sm0.2Sr0.3MnO3为母体，与金属Ag复合，研究不同烧结温度对二相复合体系磁电阻增强效应的影响。结果表明：不同烧结温度对二相复合体系磁电阻增强效应的影响很大，烧结温度低，磁电阻增强效应明显。在制作钙钛矿锰氧化物母体时，只要能形成单相结构。烧缱温度越低越好。烧结温度越低，颗粒越小。界面越多；Ag与钙钛矿锰氧化物母体复合时，烧结温度也不要高。只要能满足压片所需烧结温度，烧结温度低有利于钙钛矿锰氧化物颗粒表面覆Ag。
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| 关 键 词： | 低场磁电阻 Ag 钙钛矿锰氧化物 二相复合体 烧结温度 |
Influence of Sintering Temperature on Magnetoresistance In the Two-phase Composite System ofPerovskite Manganite with Ag Covering Its Grain Surface |
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| YANG Gang,PENG Zhen-sheng,SONG Qi-xiang,WANG Gui-ying,TANG Yong-gang,NIU Xiao-fei,LIU Peng. Influence of Sintering Temperature on Magnetoresistance In the Two-phase Composite System ofPerovskite Manganite with Ag Covering Its Grain Surface[J]. Journal of Shuzhou College, 2010, 25(2): 31-35,41. DOI: 10.3969/j.issn.1673-2006.2010.02.010 |
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| Authors: | YANG Gang PENG Zhen-sheng SONG Qi-xiang WANG Gui-ying TANG Yong-gang NIU Xiao-fei LIU Peng |
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| Affiliation: | YANG Gang1,PENG Zhen-sheng1,2,SONG Qi-xiang1,WANG Gui-ying1,TANG Yong-gang1,NIU Xiao-fei1,LIU Peng1(1.Anhui Key Laboratory of Spintronic , Nanometric Materials,Suzhou University,Suzhou,234000,2.Structure Research Laboratory,University of Science , Technology of China,Hefei,230026,China) |
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| Abstract: | A two-phase composite system was prepared at different sintering temperatures by the solid-state reaction method.La0.6Dy0.1Sr0.3MnO3 and La0.5Sm0.2Sr0.3MnO3 were chosen as the matrix and were compounded with metallic Ag,then the influences of different sintering temperatures on the enhancement of magnetoresistance in the two-phase composite system were studied.The results indicate that: different sintering temperatures have great influences on the enhancement of magnetoresistance in the two-phase composite ... |
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| Keywords: | Ag |
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