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DC Field | Value | Language |
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dc.contributor.author | Kundu, Asish | - |
dc.contributor.author | Sarkar, R | - |
dc.contributor.author | Pahari, B | - |
dc.contributor.author | Ghoshray, A | - |
dc.contributor.author | Rao, C N R | - |
dc.date.accessioned | 2012-12-05T06:42:07Z | - |
dc.date.available | 2012-12-05T06:42:07Z | - |
dc.date.issued | 2007-04 | - |
dc.identifier | 0022-4596 | en_US |
dc.identifier.citation | Journal of Solid State Chemistry 180(4), 1318-1324 (2007) | en_US |
dc.identifier.uri | https://libjncir.jncasr.ac.in/xmlui/10572/1198 | - |
dc.description | Restricted Access | en_US |
dc.description.abstract | A comparative study of the magnetic properties of a few members of the Ln(0.5)Sr(0.5)CoO(3) family with different radii of the A-site cations, 〈rA〉, in the range 1.19-1.40 A has been carried out. The apparent Tc (where the magnetization undergoes an abrupt increase) decreases markedly with 〈rA〉 as well as the size-disorder arising from the mismatch in the size of the A-site cations. The value of the magnetization at low temperatures decreases markedly with decrease in〈rA〉 or increase in size-disorder, suggesting that the relative proportion of the ferromagnetic (FM) species decreases relative to that of the paramagnetic (PM) species. Such a variation of the FM/ PM ratio with composition and temperature is evidenced from the Mossbauer spectra of La0.5Sr0.5CoO3 as well. The variation of the FM/PM ratio with 〈rA〉 and size-disorder, as well as a local-probe study using Co-59 Nuclear magnetic resonance spectroscopy suggest that electronic phase separation is an inherent feature of the Ln(0.5)Sr(0.5)CoO(3) type cobaltates, with the nature of the different magnetic species in the phase-separated system varying with 〈rA〉 and size disorder. (c) 2007 Elsevier Inc. All rights reserved. | en_US |
dc.description.uri | http://dx.doi.org/10.1016/j.jssc.2007.02.003 | en_US |
dc.language.iso | en | en_US |
dc.publisher | Academic Press Inc Elsevier Science | en_US |
dc.rights | © 2007 Elsevier Inc | en_US |
dc.subject | Mossbauer spectroscopy | en_US |
dc.subject | Itinerant-Electron Ferromagnetism | en_US |
dc.subject | Cation Size-Disorder | en_US |
dc.subject | Transport-Properties | en_US |
dc.subject | La1- Xsrxcoo3 | en_US |
dc.subject | System | en_US |
dc.subject | Pr | en_US |
dc.subject | Gd | en_US |
dc.subject | Nd | en_US |
dc.title | A Comparative study of the magnetic properties and phase separation behavior of the rare earth cobaltates, Ln0.5Sr0.5CoO3 (Ln = rare earth) | en_US |
dc.type | Article | en_US |
Appears in Collections: | Research Papers (Prof. C.N.R. Rao) |
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