2 publications
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Effect of Disorder in Nanocrystalline La0.5Pr0.2Ca1–xBaxMnO3 ManganitesBy N.A Shah
Abstract: Nanocrystalline samples of La0.5Pr0.2Ca0.3–xBaxMnO3 (LPCBMO) (x = 0.05, 0.10, 0.15, 0.20, 0.25 and 0.30) manganites were successfully synthesized by employing prolonged grinding process in conventional solid-state reaction route. The obtained value of crystallite size (CS) varies from 76 nm in lower doped sample (x = 0.05) to 13 nm in the sample doped with Ba2+ (x) = 0.05. The variation in CS with x has been discussed in the context …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 16, Issue 1, 2014 Read article →
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Study on Dielectric Properties of Nanostructured Composite of ZnO-La0.45Pr0.25Sr0.3MnO3 Bulk CeramicBy J.H Markna, Davit Dhruv, R. V. Ramani, Sanjay Kansara, Dhiren Pandeya, N.A Shah
Abstract: In this study, nanostructured bulk composites of ZnO-La0.45Pr0.25Sr0.3MnO3 (LPSMO) were studied. These nanostructured composites were prepared by chemical solution technique. Nano particles of ZnO and LPSMO were mixed in weight ratio of 9:1 to prepare nanocomposite ceramic. Compared with pristine ZNO, nanocomposite of ZnO-LPSMO showed enhanced dielectric constant. The spin polarization (in ferromagnetic region) based quantum tunneling effect is used to explain the experimental results. Enhanced dielectric properties in nanocomposite …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 17, Issue 1, 2015 · pp. 22–25 Read article →