| Synthesis, structural and transport properties of Pr0.75Na0.25Mn1-xFexO3 (0.0 <= x <= 0.3) |
| Y. Li; E. Miao; Y. Sui; X. J. Wang; W. Zhang; Y. Q. Liu; R. B. Zhu; W. H. Su
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| 2007
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| 发表期刊 | Journal of Alloys and Compounds
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| ISSN | 0925-8388
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| 卷号 | 441期号:1-2页码:40913 |
| 摘要 | The single-phase polycrystalline perovskites Pr0.75Na0.25Mn1-xFexO3 (0 <= x <= 0.30) were prepared for the first time by a sol-gel technique, which offers shorter sintering time and lower temperature to avoid the volatilization of Na and the precipitation of manganese oxide. As a result, the maximum sodium solubility in Pr1-xNaxMnO3 and the degree of single-phase are significantly improved. The scanning electron microscope (SEM) results reveal that the sol-gel-derived compounds are agglomerated with fine primary particles. Both undoped and doped samples show two active IR vibrational modes at similar to 426 and similar to 607 cm(-1). The resistivity of the samples series exhibits insulator behavior. The resistivity decreases with increasing Fe doping for x <= 0.05, and increases subsequently with further increasing Fe doping. The effects of Fe doping on Pr0.75Na0.25Mn0.25FexO3 compounds can be analyzed from two different aspects, namely the geometric effect (size of the dopant) and electronic configurations. (C) 2006 Elsevier B.V. All rights reserved. |
| 部门归属 | harbin inst technol, ctr condensed matter sci & technol, harbin 150001, peoples r china. jilin univ, ctr rare earth solid state phys, changchun 130023, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china. china ctr adv sci & technol, ctr condensed matter & radiat phys, world lab, beijing 100080, peoples r china.;su, wh (reprint author), harbin inst technol, ctr condensed matter sci & technol, harbin 150001, peoples r china;liyu87043@hit.edu.cn liyu87043@hit.edu.cn suwenhui@hit.edu.cn
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| 关键词 | Chemical Synthesis
Thermogravimetric Analysis
Electron Microscopy
Magnetization
Resistivity
Colossal Magnetoresistance
Perovskite Manganites
Magnetic-properties
Phase-separation
Substitution
Manganese
Charge
Pr0.5sr0.5mno3
Pr1-xsrxmno3
Temperature
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| URL | 查看原文
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| WOS记录号 | WOS:000247991000004
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/33657
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
Y. Li,E. Miao,Y. Sui,et al. Synthesis, structural and transport properties of Pr0.75Na0.25Mn1-xFexO3 (0.0 <= x <= 0.3)[J]. Journal of Alloys and Compounds,2007,441(1-2):40913.
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| APA |
Y. Li.,E. Miao.,Y. Sui.,X. J. Wang.,W. Zhang.,...&W. H. Su.(2007).Synthesis, structural and transport properties of Pr0.75Na0.25Mn1-xFexO3 (0.0 <= x <= 0.3).Journal of Alloys and Compounds,441(1-2),40913.
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| MLA |
Y. Li,et al."Synthesis, structural and transport properties of Pr0.75Na0.25Mn1-xFexO3 (0.0 <= x <= 0.3)".Journal of Alloys and Compounds 441.1-2(2007):40913.
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