TY - JOUR
T1 - Investigation of the electrical and magnetic properties of electron-doped Ruddlesden-Popper phases, CaO(Pr0.08Ca0.92MnO3)n (n = 1, 2, 3 and ∞)
AU - Sudheendra, L.
AU - Raju, A. R.
AU - Lofland, S. E.
AU - Ramanujachary, K. V.
N1 - Funding Information:
This work was supported in part by the New Jersey Commission on Higher Education and the NSF by Grant No. DMR 00-008008. KVR would like to thank Prof. C.N.R. Rao for useful discussions and suggestions during his visit at JNCASR.
PY - 2003/5
Y1 - 2003/5
N2 - The electrical and magnetic properties of Pr3±-doped Ruddlesden-Popper manganates with the formula, CaO(Pr0.08Ca0.92MnO3)n (n = 1,2,3 and ∞) have been investigated. The electrical conductivity of the samples increases with the number of perovksite slabs sandwiched between the rock-salt-like CaO layers. Magnetic susceptibility measurements show an anomalous behavior for the n = 1 composition which is attributed to the near absence of ferromagnetic correlations in a two-dimensional system. The magnetic behavior of other members can, however, be understood on the basis of a 'ferromagnetic-droplet' model. Since the number of electrons per perovskite slab is invariant across the series, the electronic properties are readily correlated to the phase space available for exchange interactions.
AB - The electrical and magnetic properties of Pr3±-doped Ruddlesden-Popper manganates with the formula, CaO(Pr0.08Ca0.92MnO3)n (n = 1,2,3 and ∞) have been investigated. The electrical conductivity of the samples increases with the number of perovksite slabs sandwiched between the rock-salt-like CaO layers. Magnetic susceptibility measurements show an anomalous behavior for the n = 1 composition which is attributed to the near absence of ferromagnetic correlations in a two-dimensional system. The magnetic behavior of other members can, however, be understood on the basis of a 'ferromagnetic-droplet' model. Since the number of electrons per perovskite slab is invariant across the series, the electronic properties are readily correlated to the phase space available for exchange interactions.
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U2 - 10.1016/S0038-1098(03)00208-4
DO - 10.1016/S0038-1098(03)00208-4
M3 - Article
AN - SCOPUS:0037405666
SN - 0038-1098
VL - 126
SP - 447
EP - 451
JO - Solid State Communications
JF - Solid State Communications
IS - 8
ER -