Phase separation, low-field magnetic and transport properties of Pr0.75Na0.25Mn0.9Fe0.1O3

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	Phase separation, low-field magnetic and transport properties of Pr0.75Na0.25Mn0.9Fe0.1O3
	Y. Li; J. P. Miao; Y. Sui; Z. Lu; Z. N. Qian; W. H. Su
	2006
发表期刊	Journal of Magnetism and Magnetic Materials
ISSN	0304-8853
卷号	305 期号:1 页码:247-252
摘要	A single-phase perovskite Pr0.75Na0.25Mn0.9Fe0.1O3 was prepared by a sol-gel technique. Some magnetic properties, including magnetization, AC susceptibility and magnetotransport property at low temperatures, were investigated. The analysis of data shows that there exist correlated ferromagnetic clusters embedded in a charge-ordered (CO) antiferromagnetic insulative matrix. The growth of ferromagnetic clusters with increasing magnetic field was examined. The results indicate that the ferromagnetic clusters are far from filling up the whole sample, even up to H = 5 T. The sample maintains an insulating state at temperatures below similar to 65 K for H <= 5 T, and the transport property is natural for magnetic semiconductors at temperatures above -65 K. The temperature dependence of resistivity for Pr0.75Na0.25Mn0.9Fe0.1O3 shows charge-ordering transition at similar to 192 K. Single-phase Pr0.75Na0.25MnO3 was also prepared and studied in order to understand the effect of Fe doping. The ferromagnetism and conductivity have been consistently improved by 10% Fe doping at the expense of CO antiferromagnetism. These behaviors are interpreted in terms of geometric effects (size of the A-sites cations and of the dopant) and the Mn3+/Mn4+ ratio. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	harbin inst technol, key lab condensed matter sci & technol, harbin 150001, peoples r china. jilin univ, grp rare earth solid state phys, changchun 130023, peoples r china. jilin univ, dept phys, changchun 130023, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;su, wh (reprint author), harbin inst technol, key lab condensed matter sci & technol, harbin 150001, peoples r china;suwenhui@hit.edu.cn
关键词	Magnetization Ac Susceptibility Phase Separation Ferromagnetic Cluster Magnetoresistance Colossal Magnetoresistance Charge Manganites Fe La1-xcaxmno3 Perovskite Diagram
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WOS记录号	WOS:000238717900043
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34316
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Li,J. P. Miao,Y. Sui,et al. Phase separation, low-field magnetic and transport properties of Pr0.75Na0.25Mn0.9Fe0.1O3[J]. Journal of Magnetism and Magnetic Materials,2006,305(1):247-252.
APA	Y. Li,J. P. Miao,Y. Sui,Z. Lu,Z. N. Qian,&W. H. Su.(2006).Phase separation, low-field magnetic and transport properties of Pr0.75Na0.25Mn0.9Fe0.1O3.Journal of Magnetism and Magnetic Materials,305(1),247-252.
MLA	Y. Li,et al."Phase separation, low-field magnetic and transport properties of Pr0.75Na0.25Mn0.9Fe0.1O3".Journal of Magnetism and Magnetic Materials 305.1(2006):247-252.