Journal ArticleDOI
Structural, magnetic, and transport properties of nanoparticles of the manganite Pr0.5Ca0.5MnO3
TLDR
In this article, the structural, magnetic and transport properties of nanoparticles of Pr0.5Ca 0.5MnO3 (PCMO) were investigated with particle sizes as small as 15nm synthesized by polyol route.Abstract:
In this paper we report the structural, magnetic, and transport properties of nanoparticles of Pr0.5Ca0.5MnO3(PCMO). On comparing our results with that of bulk PCMO, we find that there is a likely destabilization of charge ordering in nanoparticles of PCMO. The investigation has been done with particle sizes as small as 15nm synthesized by polyol route. The size reduction (by keeping the chemical composition unchanged) reduces the orthorhombic c axis preferentially and thus reduces the orthorhombic distortion. The size reduction to 15nm enhances the ferromagnetic moment at low temperatures and strongly suppresses the activated charge transport which is seen in the bulk samples of charge ordered PCMO.read more
Citations
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Journal ArticleDOI
Grain-size effects on the charge ordering and exchange bias in Pr 0.5 Ca 0.5 MnO 3 : The role of spin configuration
T. Zhang,Martin Dressel +1 more
TL;DR: In this article, the effect of grain size on the charge ordering and exchange bias in CE-type antiferromagnetic charge ordered manganite compounds was explored by magnetometry.
Journal ArticleDOI
Particle size effects on La0.7Ca0.3MnO3 size-induced changes of magnetic phase transition order and magnetocaloric study
Wei Tang,Wenjian Lu,Wenjian Lu,Xuan Luo,Bosen Wang,Xuebin Zhu,Wenhai Song,Zhaorong Yang,Yuping Sun +8 more
TL;DR: In this paper, the structure, magnetic properties, and magnetocaloric effect of La0.7Ca0.3MnO3 ceramics with different particle sizes have been investigated.
Journal ArticleDOI
Research Progress in Rare Earth-Doped Perovskite Manganite Oxide Nanostructures
TL;DR: An overview of the state of art in the studies on the fabrication, structural characterization, physical properties, and functional applications of rare earth-doped perovskite manganite oxide nanostructures is given.
Journal ArticleDOI
ZnO-based ceramic nanofibers: Preparation, properties and applications
TL;DR: In this paper, a review summarizes and highlights the main aspects, from literature of the last ten years, regarding synthesis methods of ZnO-based CNFs, their optical, electrical and magnetic properties and applications in various fields of industry.
Book ChapterDOI
Magnetic Properties of Perovskite Manganites and Their Modifications
TL;DR: In this article, the authors systematically outline some fundamentals and key experimental results concerning magnetic properties of perovskite manganites, focusing on magnetocaloric properties, pressure effect on magnetic properties, and magnetism of manganite nanoparticles.
References
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TL;DR: In this paper, the authors used a Geiger counter spectrometer to measure the changes in intensity distribution in the spectra of cold worked aluminium and wolfram and found that the line breadths may be attributed to simultaneous small particle size and strain broadening, the latter predominating at the higher Bragg angles.
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Magnetic-field-induced metal-insulator phenomena in Pr1-xCaxMnO3 with controlled charge-ordering instability
TL;DR: Field-induced insulator-to-metal transitions have been found in single crystals, which are accompanied by a melting of the insulating charge-ordered state, which is argued in terms of the effect of discommensuration of the charge concentration on the charge-ordering state.
Journal ArticleDOI
Charge, orbital, and magnetic ordering in La 0.5 Ca 0.5 MnO 3 s
TL;DR: In this article, an analysis of synchrotron x-ray and neutron powder diffraction data indicates that the anomalous and hysteretic behavior of the lattice parameters occurring between 225 K and 155 K is due to the development of a Jahn-Teller distortion of the octahedra, the orbitals being oriented perpendicular to the orthorhombic b axis.
Journal ArticleDOI
Magnetic Ordering and Relation to the Metal-Insulator Transition in Pr 1 − x Sr x MnO 3 and Nd 1 − x Sr x MnO 3 with x ∼ 1 / 2
TL;DR: In this article, the authors studied three distorted perovskite manganites, Pr{sub 1/2}Sr {sub 1 2}MnO {sub 3} and Nd{sub 0.45} Sr{sub0.55} MnO{sub 3] with x=1/2 and 0.55 by the neutron diffraction technique.
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Grain-size effects on the charge ordering and exchange bias in Pr 0.5 Ca 0.5 MnO 3 : The role of spin configuration
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