Investigation of Structural, Magneto-transport, and Electronic properties of Pr0.7Sr0.3MnO3 nanoparticle
Journal Title: JOURNAL OF ADVANCES IN PHYSICS - Year 0, Vol 7, Issue 3
Abstract
In this report Micro-structural, magnetic, electronic, and magneto-transport properties of perovskite Pr0.7Sr0.3MnO3 manganite nanoparticles have been thoroughly investigated. A series of samples with different particle size (Φ) is synthesized by chemical pyrophoric reaction process. Rietveld refinement of X-Ray diffraction pattern of the sample showed single phase orthorhombic structure with Pbnm space group. Metal- insulator transition () has been observed in the temperature range of 180-200 K in zero field resistivity data (2300 K) and it differs from ferromagnetic to paramagnetic transition temperature () due to enhanced surface disorder effect. The lowest nanomentric sample exhibit maximum 85 % magneto-resistances under 8 T magnetic field at 4 K. Magneto-impedance measurement of the Pr0.7Sr0.3MnO3 nano particles have been obtained at 0.8 T in the temperature range 80-300 K. The magneto transport properties has been explored with spin polarized tunneling and spin dependent scattering of single ferromagnetic domain with nanometric grain size modulation. We have analyzed temperature dependent resistivity data using small polaron hopping and variable range hopping models. Below < 40 K a resistivity upturn behavior exhibiting a distinct resistivity minimum has been observed for each sample, which is best explained by electron-electron interaction and weak localization mechanism.
Authors and Affiliations
PROLOY TARAN DAS, Tapan Kumar Nath
Keywords
Related Articles
- EP ID EP653779
- DOI 10.24297/jap.v7i3.1598
- Views 89
- Downloads 0
The Philosophy of Space-Time: Whence Cometh Matter and Motion?
From the macrocosm to the microcosm, natural science has so far confirmed the most fundamental assertion of materialist dialectics that there can be no matter without motion and no motion without matter. This view of the...
DISCHARGE CHARACTERISTICS OF GLIDING ARC PLASMA REACTOR WITH ARGON/NITROGEN
Gliding Arc Discharge plasma has properties of both thermal and non-thermal plasma conditions. Gliding arc discharge plasma in the atmospheric pressure with argon/nitrogen and its characteristics are described. Some expe...
Surprising Attraction of Non-Magnetic Materials to Magnets
We explored the effects of static magnetic fields on materials commonly classified as non-ferromagnetic and non-paramagnetic. By floating pieces of paper, wood, Teflon, and Nafion on different liquids and placing those o...
On the Theoretical Possibility to Generate Gravitational Waves Using Electromagnetic Waves
This paper demonstrates that according to a consequence of General Theory of Relativity, a high amount of electromagnetic waves, such as ultraviolet light, injected between two or more parallel reflective surfaces must g...
Operators and meaning of wave function
The interpretation problems of quantum theory are considered. In the formalism of quantum theory the possible states of a system are described by a state vector. The state vector, which will be represented as |ψ> in...