| Nd1-xSrxMn1-yCuyO3/NiFe2O4复合体系的磁电阻效应研究 |
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| 引用本文： | 何智伟,唐贵德,刘力虎,侯登录,郝普,刘逸鹏,杨连祥,潘成福,聂向富. Nd1-xSrxMn1-yCuyO3/NiFe2O4复合体系的磁电阻效应研究[J]. 功能材料, 2004, 35(1): 28-30,33 |
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| 作者姓名： | 何智伟 唐贵德 刘力虎 侯登录 郝普 刘逸鹏 杨连祥 潘成福 聂向富 |
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| 作者单位： | 河北师范大学,物理学院,河北,石家庄,050016;石家庄师范专科学校,物理系,河北,石家庄,050000;衡水师范专科学校,物理系,河北,衡水,053000 |
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| 基金项目： | 国家自然科学基金资助项目(10074013) |
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| 摘 要： | 采用溶胶-凝胶法制备了Nd1-xSrxMn1-yCuO3(x=0．33、0．2，y=0．05、0．2)微粉，平均粒径约为150nm；采用化学共沉淀法制备了NiFe2O4；微粉，平均粒径为70nm；将两种粉体充分混合、压成片状后烧结成多晶块体复合材料。经测量NiFe2O4质量百分比为30％的Nd0.67Sr0.33Mn0.8Cu0.2O3／NiFe2O4复合样品在1．8T磁场作用下，在293～315K温度范围内磁电阻MR基本保持在-13．6％．说明在室温附近温度稳定性较好。
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| 关 键 词： | 磁电阻 复合体系 类钙钛矿结构 软磁材料 |
| 文章编号： | 1001-9731(2004)01-0028-03 |
Magnetoresistance effect of Nd1-xSrxMn1-yCuyO3/NiFe2O4 composites |
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| HE Zhi-wei,TANG Gui-de,LIU Li-hu,HOU Deng-lu,HAO Pu,LIU Yi-peng,YANG Lian-xiang,PAN Cheng-fu,NIE Xiang-fu. Magnetoresistance effect of Nd1-xSrxMn1-yCuyO3/NiFe2O4 composites[J]. Journal of Functional Materials, 2004, 35(1): 28-30,33 |
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| Authors: | HE Zhi-wei TANG Gui-de LIU Li-hu HOU Deng-lu HAO Pu LIU Yi-peng YANG Lian-xiang PAN Cheng-fu NIE Xiang-fu |
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| Affiliation: | HE Zhi-wei~1,TANG Gui-de~1,LIU Li-hu~1,HOU Deng-lu~1,HAO Pu~2,LIU Yi-peng~3,YANG Lian-xiang~1,PAN Cheng-fu~1,NIE Xiang-fu~1 |
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| Abstract: | The Nd_(1-x)Sr_xMn_(1-y)Cu_yO_3(x=0.33,0.2,y=0.05,0.2) powder were prepared by sol-gel process . NiFe_2O_4 powder were prepared by chemical coprecipitation method. From the scanning electron microscope (SEM) photos, the average diameter of Nd_(1-x)Sr_xMn_(1-y)Cu_yO_3 particles was about 150nm; one of the NiFe_2O_4 particles was about 70nm. Composite pellets were prepared by mixed fully the two kind of powders, pressed and sintered. It was found that magnetoresistance (MR) value of (Nd_(0.67)Sr_(0.33)Mn_(0.8)Cu_(0.2)O_3)_(0.7)/(NiFe_2O_4)_(0.3) composites was about -13.6% in the temperature range between 293K and 315K where applied magnetic field was 1.8T, therefore, the MR temperature stability of this composite was better than other some similar materials. |
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| Keywords: | magnetoresistance composite system perovskite structure soft magnetic material |
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