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| La0．67Ca0．33CoO3的高场磁电阻效应研究 | |
| 引用本文： | 范宝殿,张敏敏,方春玉,邱祖强. La0．67Ca0．33CoO3的高场磁电阻效应研究[J]. 化工时刊, 2008, 22(3): 17-19 |
| 作者姓名： | 范宝殿 张敏敏 方春玉 邱祖强 |
| 作者单位： | 1. 福建农林大学金山学院,福建,福州,350002 2. 东南大学物理系,江苏,南京,211185 3. 福建农林大学机电学院,福建,福州,350002 |
| 摘 要： | 采用溶胶凝胶法制备了La0．67Ca0．33CoO3样品，利用物性测量系统（PPMS）对样品的磁电阻进行了测量，研究了样品在磁场下的磁电阻效应。电阻（R）测量表明在H=OT和H=9T的磁场下，在4K〈T〈300K的温度范围内，样品的电阻和磁电阻都随着温度的降低而升高，磁电阻最高达60％。从温度对eg电子的影响的角度进行了解释。 |
| 关 键 词： | 溶胶凝胶法 钙钛矿 磁电阻效应 |
| 修稿时间： | 2008-01-17 |
Magnetoresistance Studies in Higher Magnetic Field on La0.67 Ca0.33 CoO3 |
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| Fan Baodian,Zhang Minmin,Fang Chunyu,Qiu Zuqiang. Magnetoresistance Studies in Higher Magnetic Field on La0.67 Ca0.33 CoO3[J]. Chemical Industry Times, 2008, 22(3): 17-19 | |
| Authors: | Fan Baodian Zhang Minmin Fang Chunyu Qiu Zuqiang |
| Affiliation: | Fan Baodian Zhang Minmin Fang Chunyu Qiu Zuqiang(1 .Jinshan College, Fujian Agriculture and Forest University, Fujian Fuzhou 350002; 2. Department of Physics, Southeast University, Jiangsu Nanjing 211189 ;3. Department of Mechanical and Electronics, Fujian Agriculture and Forest University, Fujian Fuzhou 350002) |
| Abstract: | The magnetoresistance of the sample was studied in high magnetic field by physics property measurement system （PPMS）. The sample was prepared by sol - gel method. The resistance and magnetoresistance were increasing with decreasing temperature in magnetic field H = 0 and H = 9T at temperature range 4 K to 300 K. The magnetoresistance of the sample reached 60% at T = 4 K.The results were discussed from the influence of the temperature. |
| Keywords: | sol - gel method perovskite magnetoresistance |
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