Influence of dopant concentration on the structure and physical properties of Nd$_{1-x}$Pb$_{x}$MnO$_{3}$ single crystals

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dc.creatorGhosh, Nilotpal
dc.creatorElizabeth, Suja
dc.creatorBhat, H. L.
dc.creatorNalini, G.
dc.creatorMuktha, B.
dc.creatorRow, T. N. Guru
dc.date2003-08-02
dc.date.accessioned2026-07-07T02:52:44Z
dc.date.available2026-07-07T02:52:44Z
dc.descriptionThe structure of Nd$_{1-x}$Pb$_{x}$MnO$_{3}$ crystals is determined by single crystal X-ray diffraction. Substitution of Pb at the Nd site results in structural phase change from tetragonal (x = 0.25) to cubic (x = 0.37). These changes are attributed to the progressive removal of inter-octahedral tilting and minimization of the octahedral distortion leading to a higher symmetry as doping concentration increases. While the unit cell volume of tetragonal structure ($\it{P4/mmm}$) is comparable to that of parent NdMnO$_{3}$, the volume of cubic unit cell ($\it{Pm\bar{3}m}$) is doubled. Electron diffraction patterns support these results and rule out the possibility of twinning. Changes in transport properties as a function of temperature at different doping levels are in accordance with the observed structural changes. It is noticed that $\it{T_{c}}$ and $\it{T_{MI}}$ increase with x.
dc.description8 figures, Communicated to Journal of Materials Chemistry
dc.identifierhttps://arxiv.org/abs/cond-mat/0308033
dc.identifierhttp://arxiv.org/abs/cond-mat/0308033
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21954
dc.subjectStrongly Correlated Electrons
dc.titleInfluence of dopant concentration on the structure and physical properties of Nd$_{1-x}$Pb$_{x}$MnO$_{3}$ single crystals
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