| Al和Fe替代对La0.67Ca0.33MnO3体系结构和M-I转变的影响 |
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| 引用本文： | 崔玉建,贾广强,张玉凤,韩雁冰,王新燕,曹桂新,李金波,周云,葛洪良,曹世勋,张金仓. Al和Fe替代对La0.67Ca0.33MnO3体系结构和M-I转变的影响[J]. 低温物理学报, 2005, 27(1): 37-45 |
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| 作者姓名： | 崔玉建 贾广强 张玉凤 韩雁冰 王新燕 曹桂新 李金波 周云 葛洪良 曹世勋 张金仓 |
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| 作者单位： | 中国计量学院物理系,杭州,310018;上海大学物理系,上海,200436;河南职业技术学院,南阳,473009 |
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| 基金项目： | 国家自然科学基金(项目编号:10274049),浙江省自然科学基金(项目编号:502122),上海市教委科技发展基金(项目编号:02AK42)和上海市教委重点学科建设项目资助的课题. |
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| 摘 要： | 研究了Al和Fe替代的La0.67Ca0.33Mn1-xMxO3体系的结构特征及其对金属-绝缘转变的影响.结果表明,随Fe替代含量的增加,晶胞体积并未有显著的变化;而随Al替代含量的增加,在整个替代范围内,晶胞体积表现为单调减小.两种替代均使体系的电阻率急剧增加,绝缘-金属转变温度TIM向低温方向移动.对少量替代含量,在T
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| 关 键 词： | La2/3Ca1/3MnO3锰氧化物 离子替代 晶体结构 M-I转变 |
| 修稿时间： | 2004-03-09 |
INFLUENCE OF Al AND Fe SUBSTITUTION ON STRUCTURE AND M-I TRANSITION FOR La2/3Ca1/3MnO3 PEROVSKITE MANGANESE |
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| CUI YU JIAN JIA GUANG QIANG ZHANG YU FENG HAN YAN BING WANG XIN YAN CAO GUI XIN LI JIN BO ZHOU HONG GE HONG LIANG CAO SHI XUN ZHANG JIN CANG. INFLUENCE OF Al AND Fe SUBSTITUTION ON STRUCTURE AND M-I TRANSITION FOR La2/3Ca1/3MnO3 PEROVSKITE MANGANESE[J]. Chinese Journal of Low Temperature Physics, 2005, 27(1): 37-45 |
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| Authors: | CUI YU JIAN JIA GUANG QIANG ZHANG YU FENG HAN YAN BING WANG XIN YAN CAO GUI XIN LI JIN BO ZHOU HONG GE HONG LIANG CAO SHI XUN ZHANG JIN CANG |
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| Affiliation: | CUI YU JIAN 1 JIA GUANG QIANG 2 ZHANG YU FENG 2 HAN YAN BING 1 WANG XIN YAN 2 CAO GUI XIN 2 LI JIN BO 3 ZHOU HONG 1 GE HONG LIANG 1 CAO SHI XUN 2 ZHANG JIN CANG 2 1 Department of Physics,Chinese Institute of Metrology,Hangzhou 310018 2 Department of Physics,Shanghai University,Shanghai 200436 3 Department of Physics,Henan Polytechnic Institute,Nanyang 473009 |
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| Abstract: | The influence of Al+ 3+ and Fe+ 3+ doping on structure and metal insulator ( M I ) transition behavior of the colossal magnetoresistance material La- 0.67 Ca- 0.33 MnO-3 has been studied systematically. It is found that the cell volume is almost independent of the Fe+ 3+ doping content, but it decreases monotonously with the Al+ 3+ doping content. In these two systems, the resistance increases rapidly and the M I transition temperature shifts to lower temperature region with increasing the doping content. If the doping content is quite small, the transport properties of the samples manifest metallic characteristics in the temperature range of T
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| Keywords: | La_0.67Ca_0.33MnO_3 Perovsksite Manganese Al and Fe doping Crystal Structure M-I transition |
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