Structural and Elastic Behavior of Chromium Doped Pr0.5Sr0.5MnO3 System
| Autor: | K. Vijaya Kumar, Ashok Kumar Kusuma, E. Sagar, G. Sreeram Reddy |
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| Rok vydání: | 2021 |
| Předmět: |
Diffraction
Materials science Doping Analytical chemistry chemistry.chemical_element General Medicine Condensed Matter::Materials Science symbols.namesake Chromium chemistry Electrical resistivity and conductivity symbols Condensed Matter::Strongly Correlated Electrons Orthorhombic crystal system Porosity Elastic modulus Debye model |
| Zdroj: | Advances in Nanoparticles. 10:26-35 |
| ISSN: | 2169-0529 2169-0510 |
| Popis: | A series of colossal magneto resistance (CMR) materials with compositional formula Pr0.5Sr0.5Mn1-xCrxO3 (x = 0, 0.1, 0.2, 0.3, 0.4) were prepared by sol-gel technique using pure metal nitrates as the starting materials. These samples were characterized structurally by X-ray diffraction, FTIR and SEM. All the samples exhibit orthorhombic structure without any detectable impurities. The bulk densities for all the compositions were measured from the pellets. The Young’s and Rigidity moduli, Poisson’s ratio and Debye temperature of all the compositions were calculated with the experimentally measured ultrasonic longitudinal and shear velocities at room temperature using pulse transmission technique. As the materials are porous, zero porous elastic moduli have also been calculated using a well-known Hasselmann and Fulrath model. The observed variation of elastic moduli with varying chromium doping concentration has been studied qualitatively. |
| Databáze: | OpenAIRE |
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